The Razer Viper Ultimate is an amazing gaming mouse that's very versatile and handles anything you throw at it. Its sensor performance is excellent and the click latency is incredibly low, whether you use it wired or wirelessly. It has an ambidextrous design with two side buttons on each side, giving you plenty of programmable options. It feels durable and well-built, and its low-profile design is remarkably comfortable. Its smaller size lends itself well to a fingertip grip, but small and medium-sized hands will also find it comfortable with a palm or a claw grip. It also comes with a charging station that acts as a receiver range extender for better performance.
Our Verdict
The Razer Viper Ultimate Wireless is great for office use. It feels very well-made, is remarkably comfortable, and has an ambidextrous design with buttons on both sides. Its dedicated USB receiver also works as a charging dock, with RGB lighting that changes colors to let you know its battery level. You can reprogram every button according to your preferences, and set a HyperShift button to create a second layer of customized inputs if needed.
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Well-built and almost universal design for all.
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Buttons and settings are easily customizable.
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USB receiver storage within battery compartment.
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Fairly lightweight.
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Comfortable, ambidextrous design.
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Not recommended for very large hands.
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Only small and medium hands can use it with a palm grip.
The Razer Viper Ultimate is excellent for FPS games. The click latency, whether wired or wireless, is incredibly low, and even competitive gamers won't notice any delays in-game. It's also fairly light, and its sensor performance is excellent. Its shape is well-suited for a fingertip grip for nearly all hand sizes, but larger hands might have some issues with a palm or claw grip.
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Well-built and almost universal design for all.
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Buttons and settings are easily customizable.
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Incredibly low latency.
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USB receiver storage within battery compartment.
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Fairly lightweight.
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Not recommended for very large hands.
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Only small and medium hands can use it with a palm grip.
The Razer Viper Ultimate is great for MMO games. It has a good amount of programmable buttons, although not nearly as many as a dedicated MMO mouse. Nevertheless, it has amazing sensor performance and incredibly low click latency. Larger hands may find it uncomfortable with a palm or claw grip, but it's very well-suited for a fingertip grip for nearly all hand sizes.
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Well-built and almost universal design for all.
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Buttons and settings are easily customizable.
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Incredibly low latency.
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USB receiver storage within battery compartment.
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Fairly lightweight.
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Not recommended for very large hands.
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Only small and medium hands can use it with a palm grip.
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USB receiver storage within battery compartment.
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Fairly lightweight.
- 6.8 Work
- 8.8 Video Games (FPS)
- 8.3 Video Games (MMO)
- 9.3 Raw Performance
- Updated Jan 05, 2024: We've updated the CPI graph displayed in the Sensor Latency section of this review. Our results remain the same, but these graphs have two new columns with results from the Delay At Half Movement and Delay To End Of Movement tests.
- Updated Nov 24, 2023: We've converted this review to Test Bench 1.5. This update adds a new Main Button test group, which provides button actuation data and switch information. We've also made minor changes to how we calculate the Office usage score. For more details, you can see our full changelog here.
- Updated Sep 11, 2023: After receiving community feedback, we've fixed an inconsistency in the Cable section of this review. We've added a new Cable Video, corrected the result of the Permanent Kink test from No to Yes, and lowered the Cable score slightly from 8.5 to 8.0.
- Updated Jul 24, 2023: We've added a link to the newly-reviewed Razer Cobra Pro in the Shape section of this review.
- Updated Dec 09, 2022: We've converted this review to Test Bench 1.4. This update modifies our Hand Size Recommendation test, adding a more granular hand size recommendation chart. We've moved several minor tests into different test groups, removed the Travel usage, and added a new Raw Performance usage. For more details, you can see our full changelog here.
- Updated Sep 08, 2022: We've converted this review to Test Bench 1.3. This update adds a new Sensor Latency test and makes minor changes to several of our existing tests, resulting in test result changes in several sections. For more information, you can check out our full changelog here.
- Updated Aug 12, 2022: Following the update to Test Bench 1.2, some of our test results have changed within both the Weight and CPI sections. We've added or modified some of the text in this article to clarify these changes.
- Updated Aug 10, 2022: We've converted this review to Test Bench 1.2. This update simplifies our Weight test and expands on our CPI test from Test Bench 1.1, resulting in changes to test results in both sections. For more details, you can see our complete changelog here.
- Updated Jun 22, 2022: We've updated this review to Test Bench 1.1, which revamped our click latency test methodology. We've updated the text to reflect our new results in various sections, including the Click Latency test box, Usages, Introduction, and other locations where we discuss click latency.
- Updated May 30, 2022: We've converted this review to Test Bench 1.1. This update revamps our Click Latency test and results in changes to test results. For more details, you can see our full changelog here.
- Updated Dec 21, 2020: Updated review for accuracy and clarity.
- Updated Nov 20, 2020: Adjusted the build quality score.
- Updated Oct 05, 2020: Fixed an error with the number of programmable inputs.
- Updated Oct 05, 2020: Converted to Test Bench 1.0.
- Updated Jun 15, 2020: We've retested the sensor performance on the mouse's software version 1.02.
- Updated Dec 20, 2019: Converted to Test Bench 0.8.1.
- Updated Dec 11, 2019: Review published.
Differences Between Sizes And Variants
While we tested the black version that includes a charging dock, the Razer Viper Ultimate is also available in Quartz Pink, Mercury White, or a Cyberpunk 2077 version, which is a bright yellow with black outlines. You can also choose to buy it without the charging dock, though this option is only available in black.
Compared To Other Mice
The Razer Viper Ultimate is an outstanding wireless gaming mouse with incredibly low click latency. It also has a true ambidextrous design, with two side buttons per side. Additionally, the charging cable is much better than the one included with previous Razer mice. For other options, see our recommendations for the best mouse, the best wireless gaming mouse, and the best FPS mouse. If you're interested in Razer products, also check out the best Razer mice.
The Razer Viper V2 Pro and the Razer Viper Ultimate are very similar mice in the same lineup. The two mice share the same shape, but the V2 Pro is significantly lighter and has an improved sensor with a wider CPI range. The Ultimate has several features the V2 Pro lacks, including RGB lighting, rubber side grips, and an additional pair of side buttons on the right side.
The Logitech G PRO X SUPERLIGHT and the Razer Viper Ultimate are both amazing wireless gaming mice. If you're a fan of ultra-light mice, the Logitech is worth considering as it's among the lightest wireless mice we've ever tested. It also has a wider CPI range and is fully compatible with Mac, which the Razer isn't. However, the Razer is still very lightweight, has two programmable buttons on each side, and feels more comfortable to use than the Logitech.
The Razer Cobra Pro and the Razer Viper Ultimate are wireless gaming mice with comparable high-end gaming performance and very similar shapes. Still, the Cobra Pro is noticeably smaller in size. The Cobra Pro has more extensive RGB lighting and supports Bluetooth. On the other hand, the Viper Ultimate is marginally lighter and has two side buttons on either side, while the Cobra Pro only has side buttons on the left.
The Razer Viper Ultimate is a slightly better mouse than the Logitech G Pro Wireless. It has a few more programmable buttons and its cable, if used wired, is noticeably lighter and less cumbersome. The design of the Razer is also more comfortable. On the other hand, the Logitech is a bit more versatile since it is fully compatible with macOS, which the Razer isn't.
The Razer Viper Ultimate and the Razer Basilisk V3 are both excellent gaming mice, but the Viper Ultimate is wireless and aimed more towards FPS gaming, while the Basilisk V3 is wired and more versatile for a range of game genres. The Viper Ultimate is much lighter and has two side buttons on each side of the mouse. On the other hand, the Basilisk V3 has a thumb rest, and three additional buttons, though it doesn't have any buttons on the right side. The Basilisk V3 also has lower click latency and a scroll wheel with L/R tilt buttons, and a free-scrolling mode.
The Razer Viper Ultimate is a better FPS gaming mouse than the Logitech G502 LIGHTSPEED, but both are very good, versatile mice. The Razer is smaller and much lighter, with an ambidextrous design that suits a fingertip grip, except if you have smaller hands. It has two side buttons on each side of its body, while the Logitech has an unlockable wheel and an additional sniper button on the side. The Logitech is big and heavy, with an ergonomic design and a thumb rest. It should be better suited for people with larger hands.
The Razer Viper Ultimate and the Razer Basilisk Ultimate are similar gaming mice. They're the same mouse internally but have a different shape and design. The Basilisk Ultimate is a right-handed mouse with a thumb rest and has an additional sniper button on the left side. While the Viper Ultimate isn't recommended with all grip types for larger hands, the Basilisk Ultimate can be used comfortably with all grip types with anyone except those with very small hands.
The Razer Viper 8KHz and the Razer Viper Ultimate have the same ambidextrous body, but the Viper Ultimate is wireless, while the 8KHz is wired-only. Aside from some slight variances, like the 8KHz's slightly lower click latency and more consistent sensor, the biggest difference is the max polling rate. While the Ultimate caps out at 1000Hz, the 8KHz can be set as high as 8000Hz, which results in more fluid cursor movements, though we don't currently test this.
The Razer Viper Ultimate is a slightly better gaming mouse than the Razer Viper Mini. The Mini is wired-only, while the Ultimate can be used wired or wirelessly. The Ultimate is slightly more comfortable due to its larger size, has more programmable buttons, and has a wider and more adjustable CPI range. While the Ultimate may be better for people with larger hands, smaller hands will likely get a better grip with the Mini, especially if using a fingertip grip.
The Razer DeathAdder V2 Pro and the Razer Viper Ultimate are very similar performance-wise. The main difference is that the V2 is a right-handed mouse, while the Ultimate is fully ambidextrous. The Ultimate is lighter; however, the V2 has Bluetooth capability and a multi-device pairing feature.
The Razer Viper Ultimate is slightly better than the GLORIOUS Model O Wireless for all uses. The Razer feels more comfortable, has many more programmable inputs, and has lower click latency. However, the GLORIOUS is marginally lighter and feels better-built. While those with smaller hands will likely find the Razer more comfortable with most grip types, the GLORIOUS is better suited for larger hands.
The Razer Viper Ultimate is a noticeably better performing mouse than the wired Logitech G502 HERO. The Razer is better for a fingertip grip and glides very well. Its wireless design and low weight make it a great mouse for FPS games. It's very comfortable to use, but people with larger hands might prefer the Logitech, especially with a palm grip.
The Razer Viper and Razer Viper Ultimate are nearly identical. The Ultimate is wireless, while the Viper is wired-only. The Viper is a few grams lighter than the Ultimate; other than that, they're pretty much the same. You get a nice RGB charging cradle with the Ultimate, and the USB charging cable is a bit more flexible.
The Razer Viper Ultimate is a better wireless gaming mouse than the Razer Orochi V2. The Ultimate is lighter, has two side buttons on each side, connects wirelessly with a USB receiver, and has a rechargeable battery. It also has somewhat better click latency and is suitable for nearly all hand sizes using a claw or fingertip grip and smaller hands using a palm grip. Comparatively, the Orochi connects with its USB receiver or via Bluetooth and uses an AA or AAA battery. It's well-suited for fingertip grip for large and medium-sized hands and claw or palm grip with smaller hands.
The Razer Viper Ultimate is a better overall gaming mouse than the Logitech G903 LIGHTSPEED. It's lighter, more comfortable to use, and its sensor is amazing. It comes with a nice RGB charging station. On the other hand, the Logitech is a bit more versatile, thanks to its wheel's unlock button and the fact that it's fully compatible with macOS.
The Razer Viper Ultimate is a better gaming mouse than the SteelSeries Prime Wireless. The Razer is lighter and has an ambidextrous shape. It also has two additional side buttons on the right side. Performance-wise, it has a much lower click latency, a lower lift-off distance, a higher maximum CPI, and you can adjust the set CPI more precisely. On the other hand, the SteelSeries feels sturdier and has a right-handed shape. It also has customization software compatible with Windows and macOS, while the Razer only has software compatible with Windows.
The Razer Viper Ultimate and the Razer DeathAdder V2 are similarly performing mice for FPS gaming. The Ultimate is wireless and a little bit lighter, while the V2 is wired. The Ultimate's click latency is excellent and almost as low as the V2, even when used wirelessly. The V2 is a better mouse for a palm grip, as it's suitable for any hand size with this grip type, while the Ultimate is better in fingertip grip for those with larger hands.
The Razer Viper Ultimate is slightly better than the Logitech G703 LIGHTSPEED with HERO Sensor. The Razer is lighter, more comfortable to use, and has more programmable inputs. However, the Logitech has a lower CPI variation and software support for macOS.
The Razer Mamba Elite is a wired gaming mouse, while the Razer Viper Ultimate is wireless. Both mice are lightweight, though the Ultimate is lighter. The Ultimate is for people with small or medium hands, and those with very large hands will likely only find the Ultimate comfortable in fingertip grip. The Elite can be used in all grip types by all hand sizes, except claw and fingertip grip with small hands. Both mice have low latency, a very wide CPI range, and two additional side buttons.
Although the SteelSeries Aerox 3 Wireless and the Razer Viper Ultimate both have an ambidextrous design, only the Razer has thumb buttons on both sides. The Razer is better overall due to its superior build, higher-quality feet, and lower click latency. It also has more buttons and more programmable inputs due to its HyperShift feature. However, the SteelSeries' honeycomb body is lighter, it has multi-device pairing, and its Engine 4 software is compatible with macOS.
The Razer Viper Ultimate and the SteelSeries Aerox 3 Wireless (2022) are both wireless, lightweight gaming mice, but the Razer performs better overall. The Razer feels better built and more comfortable to use. It also has a more consistent sensor, a more precisely adjustable CPI, a wider CPI range, and better click latency. On the other hand, the SteelSeries is Bluetooth compatible and has software that works on both Windows and macOS. It's also lighter than the Razer.
The Razer Viper Ultimate and the Finalmouse Starlight-12 Phantom Small are both wireless gaming mice, but the Viper performs better overall. The Viper has better click latency, a significantly wider CPI range, and more side buttons. Also, it has RGB lighting. On the other hand, the Phantom weighs 31g less and feels more solid thanks to its magnesium alloy shell. While the Viper has companion software to remap buttons and adjust sensor settings, the Phantom doesn't.
The Razer Viper Ultimate and the SteelSeries Aerox 5 Wireless are lightweight wireless gaming mice. The Razer has an ambidextrous shape and is designed mainly with FPS games in mind. It has a pair of side buttons on both sides, making it a great choice if you're right- or left-handed. It also has lower click latency and supports Bluetooth. On the other hand, the SteelSeries has a right-handed shape and is designed to be versatile enough for multiple game genres. It only has side buttons on the left side, but it has more programmable buttons overall, so it's a better choice for games with more complex controls like MOBAs and MMOs.
The Razer Viper Ultimate and the Razer DeathAdder Essential are gaming mice with different designs. The Viper Ultimate is a wireless mouse with an ambidextrous shape. It has a more flexible cable, smoother-gliding mouse feet, and three more programmable buttons. Also, it has a much wider CPI range, a more precisely adjustable CPI, a lower lift-off distance, and a much lower latency. On the other hand, the DeathAdder Essential is a wired right-handed mouse with a high back. It's better suited for large hands using a palm or claw grip, while the Viper Ultimate is better for smaller hands using a palm or claw grip.
The Razer Viper Ultimate is a better gaming mouse than the Razer DeathAdder Elite. Its wireless design gets rid of the clutter of a cable, and it's also noticeably lighter. Its click latency is lower and, when used wired, its cable is lighter than the Elite's. On the other hand, the Elite has a right-slanted design and is slightly better for people with larger hands.
The Razer Viper Ultimate is better for most uses than the Logitech G903 HERO. The Razer has slightly lower click latency, is more comfortable, and has much better feet, so it glides better. However, the Logitech has a higher max CPI, less CPI variation, and the G HUB software is available on macOS, while the Razer Synapse 3 software isn't.
The GLORIOUS Model O- Wireless and the Razer Viper Ultimate are both excellent wireless gaming mice with symmetrical shapes. The GLORIOUS has a perforated honeycomb shell that makes it lighter. It also has a more flexible charging cable. On the other hand, the Razer has a solid plastic shell and lower click latency. It's also a true-ambidextrous model with two pairs of side buttons on either side, while the GLORIOUS only has side buttons on the left.
The Razer Viper Ultimate and the Razer DeathAdder V2 X Hyperspeed are wireless gaming mice. The Viper Ultimate has an ambidextrous, low-profile design with two buttons on each side, making it suitable for left- or right-handed users. It has a rechargeable battery, and you can also use it with its paracord-like charging cable if you prefer. On the other hand, the DeathAdder V2 X has a more ergonomic, right-handed shape, and it supports Bluetooth. It's powered by an AA or an AAA disposable battery, and it has two CPI switching buttons on the edge of its left-click button.
The Razer Viper Ultimate and the DELUX M800 Wireless are wireless gaming mice with nearly identical ambidextrous designs, but the Razer performs better. It has two buttons on each side, and you can set a HyperShift button to give you a second layer of controls. The Razer has smoother-gliding feet, a wider CPI range, a more precisely adjustable CPI, and a lower lift-off distance. Also, its sensor is much more consistent, and its click latency is significantly lower. On the other hand, the DELUX has a CPI profile switching button below its scroll wheel, which the Razer lacks. Also, it's marginally lighter.
The Razer Viper Ultimate is a better wireless gaming mouse than the ASUS ROG Pugio II. It's significantly lighter and has much lower click latency. It also has mouse feet that glide more smoothly, a higher maximum CPI, and a more precisely adjustable CPI. Its shape is best-suited for a fingertip grip for larger hands or a claw or palm grip for smaller hands. Comparatively, the ASUS feels sturdier and has Bluetooth support. It also has hot-swappable switches for the left and right-click buttons. Its shape is well-suited for all grip types and nearly all hand sizes.
The GLORIOUS Model O and the Razer Viper Ultimate are both great ultra-light gaming mice. The Model O is a bit lighter thanks to its honeycomb design, but the Razer is also impressively lightweight considering it's a wireless mouse. If you have small hands, you may find the GLORIOUS a little bit too large, while the Razer may be more comfortable. Both have impressively low latency and a wide adjustable CPI range.
The Razer Viper Ultimate and the Pwnage Ultra Custom Wireless Symm 2 are both ultra-light wireless gaming mice, but the Razer performs better overall. While both mice have a similar symmetrical shape, the Razer has a fully ambidextrous design, as it has two buttons on either side. Also, its feet provide a smoother gliding experience, and it has better click latency. On the other hand, the Pwnage is marginally lighter, and it has modular pieces that you can use to customize the coloring of the mouse.
The Razer Viper Ultimate is a better mouse than the Logitech G403 Prodigy Wireless. It's noticeably lighter and smaller than the Logitech, which is great for fast movements, it's low profile, and has an ambidextrous design. It's great for FPS players that use a fingertip grip, and it comes with a nice and sleek-looking charging dock, which also has RGB lighting. On the other hand, if you prefer a palm grip, the Logitech is a better option. Its software is also available on macOS, which isn't the case with Razer Synapse.
The HyperX Pulsefire Haste Wireless and the Razer Viper Ultimate are both symmetrically-shaped wireless gaming mice, but the Razer performs better in most respects. The Razer has a wider CPI range in which you can more precisely set your CPI and significantly lower click latency. It also has a pair of side buttons on either side, making it a true ambidextrous design, while the HyperX only has side buttons on the left. On the other hand, the HyperX is 15g lighter and feels somewhat sturdier.
The BenQ ZOWIE S2 is a very different mouse than the Razer Viper Ultimate. The BenQ is a wired mouse, and it has a higher back hump, which might be better for claw grip users. On the other hand, the Razer is wireless, slightly lighter, and feels more high-end. If you were to use the Razer wired, its cable is better than the BenQ's. It also has RGB lighting that you can customize inside its software.
The Razer Viper Ultimate is an amazing FPS gaming mouse, while the GLORIOUS Model D is an excellent choice for ultra-light gaming. The Razer has an ambidextrous design with two side buttons on each side and feels more solid and comfortable overall. It has a wider CPI range, a lower lift-off distance, and more programmable inputs. Also, it can be used wired or wirelessly with its USB receiver, making it quite versatile. That said, the GLORIOUS is slightly lighter and features a honeycomb design with RGB strips. It’s well-suited for most hand sizes using any grip type.
The Razer Viper Ultimate is a slightly better gaming mouse than the Corsair KATAR PRO Wireless. The Razer feels better built, has a wider and more adjustable CPI range, and more programmable buttons. However, the Corsair has Bluetooth support, uses one AA battery, and its software is compatible with macOS, although it's less user-friendly.
The Razer Viper Ultimate is a better wireless gaming mouse than the ASUS ROG Strix Impact II Wireless. The Razer is significantly lighter, has two additional side buttons, a more flexible cable, and smoother gliding mouse feet. It also has a higher maximum CPI and a more precisely adjustable CPI. It's best-suited for a fingertip grip for all but small hands. Comparatively, the ASUS is best-suited for a claw grip for all hand sizes.
The Razer Viper Ultimate performs slightly better than the Razer Mamba Wireless. The Ultimate is smaller and lighter, and it has an ambidextrous design with two side buttons on each side. It's great for a fingertip grip, though small and medium hands should also find it comfortable with a palm or a claw grip. It has a wider CPI range, lower lift-off distance, and a lower click latency. On the other hand, the Mamba has more of an ergonomic shape, with a slight slant and a higher back. It’s well-suited for a palm and a claw grip unless you have smaller hands.
The Razer Viper Ultimate and the GLORIOUS Model D Wireless are both excellent wireless gaming mice with comparable performance. The Razer has a slightly higher maximum CPI and two side buttons on either side. You can also set a Hypershift button to enable a secondary layer of commands. On the other hand, the GLORIOUS is marginally lighter and has a more flexible cable. Its cable also has a USB-C connector instead of the older Micro-USB connector on the Razer. Both mice are well-suited for all grip types and most hand sizes, but the Razer has an ambidextrous shape while the GLORIOUS has a right-handed shape.
The Razer Viper Ultimate is an excellent wireless gaming mouse better suited for FPS gaming, while the ASUS ROG Spatha X is an impressive wireless gaming mouse suitable for many genres. The Razer is substantially lighter and has better quality feet that glide more smoothly. It also has a slightly higher maximum CPI and a lower lift-off distance. It has two side buttons on either side of the mouse. On the other hand, the ASUS has a thumb and pinky rest. It also has four additional buttons, but its six side buttons are only on the left side.
The Razer Viper Ultimate is a better wireless gaming mouse than the MSI CLUTCH GM41 LIGHTWEIGHT WIRELESS. The Razer feels sturdier and has a more flexible charging cable. It also has mouse feet that glide more smoothly and two additional side buttons on the right side, making it a good choice for left-handed users. Performance-wise, it has a more precisely adjustable CPI and a lower click latency. Both mice weigh the same and are suitable for all grip types. However, the Razer is slightly more accomodating for smaller hands, while the MSI is more accommodating for larger hands.
The Razer Viper Ultimate and the Logitech G303 Shroud Edition are ambidextrous-shaped wireless gaming mice with exceptionally low click latency and consistent sensors. The Razer has a pair of buttons on both sides, making it suitable for both left- and right-handed people, and it has customizable RGB lighting. If you have small hands and use a palm grip, you'll be more comfortable with the Razer since the Logitech's diamond shape isn't suitable for this grip type at all. If you don't like lighting, the Logitech is a better choice. It has a diamond-like shape with large, smooth-gliding mouse feet.
The Razer Viper Ultimate is a better wireless gaming mouse than the ASUS ROG Keris Wireless. It's lighter and has mouse feet that glide more smoothly. It also has a wider CPI range, a more precisely adjustable CPI, a lower lift-off distance, somewhat better click latency, and two extra side buttons on the right side. Comparatively, the ASUS feels sturdier and has Bluetooth support, which the Razer lacks. It also has hot-swappable left and right-click switches.
The Razer Viper Ultimate is a better gaming mouse than the BenQ ZOWIE FK1-B. The Razer is substantially lighter, despite being able to connect wirelessly with its USB receiver. It also has two additional side buttons, RGB lighting, better mouse feet, a wider CPI range, and a more finely adjustable CPI. The companion software is only compatible with Windows, but it has onboard memory that you can use to carry settings to computers without the software. It's well-suited to all grip types, depending on hand size. On the other hand, the BenQ doesn't have companion software for customization and only has two side buttons. That said, it's very well-suited to all grip types and nearly all hand sizes, but those with smaller hands may not be able to reach all buttons using a claw or fingertip grip.
The Razer Viper Ultimate is a better gaming mouse than the SteelSeries Rival 3 Wireless. The Razer is more comfortable, has more precise CPI adjustment steps, and it has side buttons on both sides of the mouse, unlike the SteelSeries that only has them on the left side. However, the SteelSeries has Bluetooth, a slightly more consistent sensor, and is fully compatible with macOS, unlike the Razer.
The Razer Viper Ultimate is a better gaming mouse than the SteelSeries Sensei Ten. Both mice come with an ambidextrous design and two side buttons on each side, but the Razer has a more solid design and doesn't feel slippery. The Razer also comes with a unique charging station that also acts as a receiver range extender for better performance.
The Razer Viper Ultimate is a better gaming mouse than the Corsair HARPOON RGB Wireless. The Razer is lighter and has a much more comfortable and durable feeling. Both mice are only suitable for palm grip with small or medium hands. While the Corsair can be used by all hand sizes with a claw grip, people with extra-large hands will only get a comfortable grip of the Razer when using a fingertip grip. The Razer has a much wider and more adjustable CPI range, though the sensor on the Corsair is more consistent. The Razer has more programmable buttons, and its L/R click buttons are optical instead of mechanical.
The Razer Viper Ultimate is an excellent wireless gaming mouse, while the Corsair M65 PRO RGB is a good, wired gaming mouse. The Razer is significantly lighter, has a more flexible cable, smoother gliding mouse feet, and you can use it wired or wirelessly with its USB receiver. It also has a higher maximum CPI, one additional side button, and significantly lower click latency. Unfortunately, its software is only compatible with Windows. On the other hand, the Corsair is a wired-only mouse, but it feels sturdier, has a more precisely adjustable CPI, and its software is compatible with both Windows and macOS.
The Razer Viper Ultimate and the GLORIOUS Model I are two lightweight gaming mice, but they're intended for different uses. The Razer is a symmetrical, true ambidextrous mouse with two buttons on either side, and it's better suited for FPS gaming. Also, it connects wirelessly. On the other hand, the GLORIOUS is a wired-only mouse with a right-handed slant. It's designed to be a multi-genre gaming mouse, so it has a cluster of buttons on its left side.
The Razer Viper Ultimate and the GLORIOUS Model D- Wireless are two wireless gaming mice that perform similarly well. The GLORIOUS is lighter and has a right-handed slant. Also, it charges with a USB-C connector rather than a micro-USB like the Razer. On the other hand, the Razer has an ambidextrous design and a storage compartment to store its USB receiver.
The Razer Pro Click and the Razer Viper Ultimate perform the same overall; however, they're designed for different uses. The Pro Click is meant for productivity with multi-device pairing capability, and its scroll wheel has L/R tilt input. The Ultimate is much lighter and comes with a nice charging cradle. The Pro Click is designed for right-handed use, while the Ultimate is ambidextrous.
The Razer Viper Ultimate is a much better gaming mouse than the Razer Abyssus Essential. The Viper Ultimate connects wirelessly with its USB receiver and has a pair of side buttons on either side, while the Abyssus is wired-only and has no side buttons. The Viper Ultimate is also slightly lighter, its feet glide much more smoothly on mousepads and desks, its CPI range is significantly wider, and you can adjust the CPI more precisely. It also has lower click latency and onboard memory, which the Abyssus Essential also lacks.
The Razer Viper Ultimate is a much better-performing mouse than the J-Tech Digital V628X. The Razer performs better in every regard, though the J-Tech has a unique and customizable vertical design that may be more comfortable to some people after using it for extended periods.
The Razer Viper Ultimate and the BenQ ZOWIE ZA12-B are both ambidextrous-shaped gaming mice, but the Razer is better overall. It has a lower minimum lift-off distance, an adjustable CPI range, a much lower click latency, and many programmable buttons. Also, the Razer is much lighter, making it a better choice for fans of ultra-light mice. However, while the Razer's small size makes it more suitable for people with small hands using a palm or claw grip, it means that people with larger hands may feel the mouse is too short. If you have large or extra-large hands, you may find the BenQ's larger size much more comfortable to use.
The Razer Viper Ultimate is a much better gaming mouse than the VicTsing Wireless Gaming Mouse. The Razer is lighter, better for more hand sizes with a claw grip, has a significantly lower click latency, and a much better-performing sensor. The Razer has multiple buttons that can all be programmed within Razer's software, while the VicTsing doesn't have a companion software to make any customization.
The Razer Viper Ultimate and the ROCCAT Burst Pro Air are lightweight, wireless gaming mice, but the Razer performs better overall. The Razer has slightly better click latency and a slightly wider CPI range. It's also about 6g lighter than the ROCCAT, and it feels better built overall. On the other hand, the ROCCAT supports Bluetooth, and its software is compatible with macOS.
The Razer Viper Ultimate and the Fnatic BOLT are wireless gaming mice with symmetrical shapes. The razer feels sturdier and has a pair of side buttons on the left and right sides. It also has a wider CPI range and lower click latency. On the other hand, the Fnatic has Bluetooth support, and its customization software is compatible with Windows and macOS, while the Razer software is only compatible with Windows.
The Razer Viper Ultimate is much better than the Mad Catz R.A.T. 8+. Despite being a wireless mouse, the Razer has much lower click latency. It also has an ambidextrous design, and it's lighter. However, the Mad Catz has less CPI variation, and it has an extra programmable button.
The Razer Viper Ultimate and the Corsair SABRE RGB PRO Wireless are both wireless gaming mice. The Razer build quality feels better overall, and it has a pair of side buttons on either side of the mouse. It makes it a true ambidextrous choice for either right- or left-handed users. On the other hand, the Corsair supports a higher polling rate with a maximum of 2000Hz, and unlike the Razer, its customization software is compatible with both Windows and macOS.
The Razer Viper Ultimate is a much better wireless gaming mouse than the Dell Alienware AW610M. The Razer is lighter, has a much better cable, a much lower click latency, better sensor performance, and more programmable buttons. While the Alienware is suitable for all hand sizes with a palm grip and larger hands for claw grip, the Razer is only usable with a fingertip grip if you have extra-large hands.
The Razer Viper Ultimate and the DELUX M627 are both wireless gaming mice, but the Razer performs much better. The Razer has a much lighter weight and better quality mouse feet, and you can set a HyperShift button to give you a second layer of custom commands. Also, it has a more precisely adjustable CPI, a lower lift-off distance, and much lower click latency. On the other hand, the DELUX has a modular design and comes with magnetic thumb rests to make the mouse left- or right-handed.
The Razer Viper Ultimate is an exceptional wireless gaming mouse, while the BenQ ZOWIE EC1-C is a great wired gaming mouse. The Razer is smaller, somewhat lighter, and has mouse feet that glide more smoothly. It also has two additional side buttons on the right side, making it a great choice for left-handed users. Performance-wise, it has lower click latency, a massively wider CPI range, and a CPI you can adjust precisely by increments of 50, while you can only choose between four CPI presets on the BenQ. The Razer also has customization software, which the BenQ lacks entirely.
The Razer Viper Ultimate is a better gaming mouse than the BenQ ZOWIE FK1+-B. The Razer connects wired or wirelessly with a USB receiver. It has lower latency, two additional side buttons, RGB lighting, a lower lift-off distance, a CPI with a much wider range that's adjustable in increments of 50, and software for customization. It's also well-suited to all grip types for most hand sizes, but those with larger hands may find their fingers drape over the front using a palm grip. On the other hand, the BenQ is a wired mouse with no wireless connectivity options. It's also significantly heavier and is well-suited for larger hands and all grip types.
The Razer Viper Ultimate is a significantly better gaming mouse than the SteelSeries Sensei RAW. It connects wired or wirelessly with its USB receiver and is much lighter. It also has a wider CPI range, a more precisely adjustable CPI, and better click latency. Unfortunately, its software is only compatible with Windows. On the other hand, the SteelSeries has software compatible with Windows and macOS. The Razer is well-suited for a fingertip grip for larger hands and a claw or palm grip for smaller hands, while the SteelSeries is best suited for a claw grip for all hand sizes.
The Razer Viper Ultimate and the Mad Catz B.A.T. 6+ are true ambidextrous gaming mice with side buttons on either side. However, the Mad Catz is a wired-only mouse, while the Razer is a wireless mouse with better overall performance. The Razer is also somewhat lighter and feels sturdier. It also has mouse feet that glide more smoothly. Performance-wise, it has a more consistent sensor, a lower minimum lift-off distance, a higher maximum CPI, and marginally lower click latency. You can also set a HyperShift button to enable a secondary layer of commands. Comparatively, the Mad Catz has modular pieces, including a thumb and pinky rest and a higher maximum polling rate. It's also more accommodating to more hand sizes overall.
The Razer Viper Ultimate is a better gaming mouse than the Corsair HARPOON RGB PRO. It connects wirelessly with a USB receiver and is lighter, has a more flexible cable, better mouse feet, and two additional side buttons. It also has a broader CPI range, a more precisely adjustable CPI, a lower lift-off distance, and much lower click latency. However, its software is only compatible with Windows, while the Corsair has software compatible with Windows and macOS. Both mice are well-suited for claw and fingertip grips for nearly all hand sizes and a palm grip for smaller hands.
The Razer Viper Ultimate is an amazing wireless gaming mouse, while the Gamesense Meta is an excellent wired gaming mouse. You can use the Razer either wirelessly via its USB receiver or wired with its cable. It has smoother-gliding mouse feet, more programmable buttons thanks to its Hypershift feature, and slightly lower click latency. Also, it has a wider CPI range, and you can adjust its CPI more precisely. On the other hand, the Gamesense is lighter.
The Razer Viper Ultimate and the ASUS ROG Gladius III Wireless are comparable wireless gaming mice. The Razer is lighter, and it has smoother-gliding mouse feet and much lower click latency. Also, it has more programmable inputs thanks to its HyperShift feature. On the other hand, you can use the ASUS over Bluetooth, unlike the Razer that only has a USB receiver, and it feels better built since its side buttons don't squeak.
The Razer Viper Ultimate is a better gaming mouse than the DREVO Falcon Wireless RGB. The Razer is much lighter, and it has a much lower latency. Also, its CPI range is wider, you can adjust the CPI in more precise increments, and its lift-off distance is much lower. It has two additional side buttons on the right side, and you can assign a HyperShift button which allows you to enable a second layer of controls for as long as you hold it. On the other hand, the DREVO accommodates larger hand sizes using a palm or claw grip.
The Razer Viper Ultimate is a better wireless gaming mouse than the HP OMEN Photon. The Razer is much lighter and has mouse feet that glide much more smoothly. It also has a more flexible charging cable, a higher maximum CPI, a more precisely adjustable CPI, and a much lower click latency. You can also set a HyperShift button to enable a secondary layer of commands. On the other hand, the HP has a selection of modular parts that adjust the ergonomics and functionality of the mouse. It also has a mouse wheel with L/R tilt buttons, which the Razer lacks. Unfortunately, you need to log in to an OMEN account to program more than one profile using the software, which the Razer doesn't require.
The Razer Viper Ultimate is a better, more versatile gaming mouse than the HK Gaming Mira-S. The Razer connects either wirelessly with its USB receiver or with its charging cable. It has two extra side buttons on the right side, making it a good choice for left-handed gamers. It also has a higher maximum CPI, a more precisely adjustable CPI, a lower lift-off distance, and significantly lower click latency. Comparatively, the HK Gaming is a wired-only mouse. It's somewhat lighter and has a slightly more consistent sensor. Both mice are suitable for all grip types and nearly all hand sizes. However, the HK Gaming is more accommodating for smaller hands using a fingertip grip.
The Razer Viper Ultimate is an excellent wireless gaming mouse, while the Vaxee ZYGEN NP-01 is a very good wired gaming mouse. The Razer is a bit lighter, and you can use it wired via its cable or wirelessly via its USB receiver. It has much lower click latency, and it has customization software to reprogram its buttons and adjust the CPI to your liking. Comparatively, the Vaxee has no software, and you can only cycle between four preset CPI settings via a button on the underside of the mouse. However, it feels sturdier than the Razer.
The Razer Viper Ultimate is a better wireless gaming mouse than the Vancer BT.L Gretxa. The Razer has better quality feet, a somewhat higher maximum CPI, and lower click latency. You can assign a HyperShift button that enables a secondary layer of controls, and it has two additional side buttons on the right side, making it a better choice for left-handed users. On the other hand, the Vancer is marginally lighter and feels sturdier. It also has a marginally lower minimum CPI, though this is unlikely to be useful for most users. Both mice are suitable for all grip types and most hand sizes, but the Vancer is slightly more accommodating to large-size hands using a palm grip.
The Razer Viper Ultimate is a better gaming mouse than the ROCCAT Kone Pure Ultra. The Razer has mouse feet that glide more smoothly, two additional side buttons on the right side, a higher maximum CPI, and much lower click latency. It has an ambidextrous shape and connects either wired with its charging cable or wirelessly with a USB receiver. On the other hand, the ROCCAT has a pair of CPI buttons behind the scroll wheel, which the Razer lacks. Also, it has a right-handed shape with a thumb rest.
The Razer Viper Ultimate is a better wireless gaming mouse than the ASUS ROG Gladius II Wireless. It's much lighter and has mouse feet that glide more smoothly. It has an ambidextrous shape with two additional side buttons on the right. Performance-wise, it has a wider CPI range, a more precisely adjustable CPI, a lower lift-off distance, and a much lower click latency. Comparatively, the ASUS has a right-handed shape and Bluetooth support, which the Razer lacks. It also has hot-swappable left and right-click switches.
Test Results
The Razer Viper Ultimate has a fairly aggressive style, but with a nice, high-end gaming feel to it. The logo at the back is RGB-lit. It has an ambidextrous design with a low back. It comes with a proprietary charging cradle that's also RGB-lit at its base. You can either set the logo and the base to have the same lighting or individually assign them inside the software.
If you're interested in a wireless mouse with the same shape but a smaller size, check out the Razer Cobra Pro.
The Razer Viper Ultimate is quite portable thanks to its design. It isn't too high, so you'll be able to toss it in a laptop bag without too much trouble. It also has a receiver storing slot under the mouse, so it's quite easy to bring it around without having the clutter of a cable.
Update 11/20/2020: The left and right buttons squeak when you press them all the way down. We reduced the build quality score from 8.5 to 8 because of it.
The Razer Viper Ultimate's build quality is great. Although it's very lightweight and entirely made out of plastic, it feels durable and well-built. There's no wobble or gaps, but the left and right buttons squeak when you press them all the way down. The clicks feel sturdy and slightly different than what you get on most mice, which is probably due to the optical switches.
The Razer Viper Ultimate is quite lightweight. Note that the Lowest Weight measurement is taken with the plastic door covering the receiver storage bay on the bottom of the mouse removed.
If you're interested in a lighter, higher-end version of this mouse with improved performance, check out the Razer Viper V2 Pro.
The Razer Viper Ultimate is very comfortable. It has a true ambidextrous design with two side buttons on each side of the mouse. These buttons are also slightly further back on the mouse, which makes them more reachable than the G-Wolves Hati HT-M Classic Edition or the GLORIOUS Model O. Since it doesn't have a high back, it's great for a fingertip grip, but it's not the best for bigger hands with a palm grip. If you prefer a right-slanted design rather than an ambidextrous one, check out the GLORIOUS Model D Wireless, the Razer Basilisk Ultimate, or the Razer Basilisk X Hyperspeed for a cheaper alternative.
The Razer Viper Ultimate comes with a dedicated USB receiver to connect to your PC wirelessly. You can either put it inside the cradle, which acts as an extender, or plug it directly into your PC. The dock can also give you information regarding your mouse battery. If you're interested in a similar wireless gaming mouse but with Bluetooth support, check out the Razer Orochi V2.
The Razer Viper Ultimate's cable is an improvement over older Razer products. It feels very similar to the GLORIOUS Model O's cable. It's light, doesn't hold as many kinks, and feels better-made. It doesn't create any drag when moving it around, which is great. If you don't want a charging cradle and simply want this mouse in a wired design, check out the Razer Viper.
The feet are remarkable. They’re made of virgin grade PTFE and provide a very smooth gliding experience on a desk or mousepad. Their thickness is pretty standard, but their shape could bother some people as they aren’t as round as other mice. It doesn't come with extra feet in the box, but you should be able to find some third party ones quite easily.
- Razer Viper Ultimate mouse
- USB receiver
- Charging cradle
- USB to micro-USB cable
- Manuals
The Razer Viper Ultimate has a great number of buttons, including two additional ones on each side. You can reprogram every button to whatever you like, even the scroll up and down. You can even reassign the left click, as long as the left click action is assigned to another button. You can also set a HyperShift button, which enables another layer of programmable inputs, increasing your customization possibilities.
The Razer Viper Ultimate's has incredibly low click latency. It's also very consistent and provides an extremely responsive-feeling gaming experience in any genre.
The Razer Viper Ultimate's sensor has a very wide CPI range, and you can adjust the sensitivity in small increments. You can also adjust the polling rate to 125Hz, 500Hz, or 1000Hz, and the lift-off distance is small enough that the sensor shouldn’t track your movement when you're repositioning your mouse. If you like its shape but want something wired with an 8000Hz polling rate, check out the Razer Viper 8KHz.
The Razer Viper Ultimate's scroll wheel is pretty standard compared to other gaming mice. Its incremented design offers great feedback that feels good while gaming but isn't ideal for fast scrolling through long documents.
The mouse clicks are loud, but they shouldn't disturb people around you unless you're in a very noise-sensitive environment.
The Razer Synapse 3 software is great and very user-friendly. You can easily customize most aspects of the mouse through it, and you can save your settings on the onboard memory, meaning you won't have to download the software on another computer when switching devices. Unfortunately, it's not available on macOS.
This mouse is fully compatible with Windows, but unfortunately, some buttons won't work on macOS. When setting the mouse in 'right-handed mode' on Mac, you can't use the right side buttons properly. Also, the rest of the buttons are set to their default settings, and can't be changed.