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Razer Viper Ultimate Mouse Review

Tested using Methodology v0.8.1
Reviewed Dec 11, 2019 at 08:55 am
Razer Viper Ultimate Picture
Test Methodology v0.8.1
Mixed Usage
Video Games (FPS)
Video Games (MMO)
Ultra-Light Gaming
Connectivity Wireless

The Razer Viper Ultimate is an amazing gaming mouse that's very versatile and handles anything you throw at it. Its performance is amazing and the latency, either when used wired or wirelessly, is extremely low. It has an ambidextrous design with two side buttons on each side, giving you plenty of programmable options. Its smaller size lends itself well to the fingertip grip, but small and medium-sized hands will find it comfortable for a palm grip and claw grip. Larger hands can use a claw grip, but fingers might go past the two main click buttons when using the palm grip. This mouse also comes with a unique charging station that also acts as a receiver range extender for better performance.

Our Verdict

8.5 Mixed Usage

Great for mixed usage. This mouse's performance is extraordinary and everyone should be able to find a good grip on this mouse. Its design is better suited for fingertip grip, but only very large hands will have issues with the palm or claw grip. Its wireless design is great for traveling and even for gaming thanks to its very low latency. Most people will be satisfied by this mouse.

See our Mixed Usage recommendations
8.4 Office/Multimedia

Great for office. This mouse has amazing ergonomics and is very well-built. It's also a wireless mouse, meaning you don't have a cable cluttering your desk. Also, it has a good amount of programmable buttons, making software or browser work easier and more convenient.

7.6 Travel

Good for traveling. This mouse isn't too tall and should fit in some laptop cases. It also has a built-in receiver slot, so you don't need to carry around its cable, making it great for working in tight spaces like on a plane.

8.7 Video Games (FPS)

Excellent for FPS games. The click latency, when wired or wireless, is amazing and even most competitive gamers won't notice any delay. It's also quite light, even for a mouse without a honeycomb pattern. Its performance is excellent and it's very accurate when moved at fast speed. Most people should find the mouse comfortable in a fingertip grip, but only larger hands might have some issues with a palm or claw grip. The mouse offers multiple customizable buttons, with two side buttons on each side.

See our Video Games (FPS) recommendations
8.8 Video Games (MMO)

Excellent for MMO games. The mouse has a good amount of programmable buttons, although not as much as some dedicated MMO mice which have a full side panel with easily nine or more side buttons. Nevertheless, this mouse has amazing performance and customization options. Its shape and size is better suited for fingertip grip for everyone, and is only awkward to grip with a palm or claw grip if you have very large hands.

See our Video Games (MMO) recommendations
8.7 Ultra-Light Gaming

Great for ultra-light gaming. If you're looking for a very light mouse that doesn't have a typical honeycomb pattern design, this is a great option. It's lightweight, well-built, and has amazing performance which you can customize to your preference in the software. The latency, even wireless, is amazing and the mouse feels very responsive.

  • 8.5 Mixed Usage
  • 8.4 Office/Multimedia
  • 7.6 Travel
  • 8.7 Video Games (FPS)
  • 8.8 Video Games (MMO)
  • 8.7 Ultra-Light Gaming
  • Very well-built and almost universal design for all.
  • Outstanding performance; customizable.
  • Very low latency, wired and wireless.
  • Improved cable over other Razer products.
  • Not recommended for very large hands.
  • Only small and medium hands can palm grip it.
  1. Update 12/20/2019: Converted to Test Bench 0.8.1.

Check Price

Viper Ultimate

Test Results

perceptual testing image

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. The mouse 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.

Maximum Weight With Wire
109 g
Maximum Weight Without Wire
75 g
Minimum Weight Without Wire
75 g

Without its cable, the Razer Viper Ultimate is very light. It's one of the lightest wireless mice we've reviewed. It compares itself easily to more traditional ultra-light gaming mice like the Glorious Model O, but without having a honeycomb pattern design.

Length 5.0" (12.7 cm)
Height 1.5" (3.8 cm)
Width 2.6" (6.6 cm)
19.47 Cu. Inch (319 Cu. centimeter)
Cable/Receiver Storing

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 around without having the clutter of a cable.

Build Quality

The Razer Viper Ultimate's build quality is great. Although it's entirely made out of plastic and it feels lightweight, the mouse feels durable and well-built. There's no wobble, gaps, or rattling noise when using the mouse. The feet glide very well and the clicks feel slightly different than what you get on most mice, which is probably due to the optical switches.

Comfort Of Use
Grip Width
62 mm

The Razer Viper Ultimate's ergonomics are excellent. This is 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 or the Glorious Model O. Since it doesn't have a high back, it's great for a fingertip grip, although it's not the best for bigger hands to use with a palm grip. If you prefer a right-slanted design rather than an ambidextrous one, check out the Razer Basilisk Ultimate, or the Basilisk X Hyperspeed for a cheaper alternative.

Palm Grip: Hand Size Recommendation
Palm Grip: Small Hand
Palm Grip: Medium Hand
Palm Grip: Large Hand
Palm Grip: X.Large Hand

Due to its low-back design and fairly short body, the Razer Viper Ultimate is better suited for small and medium hands for a palm grip. People with larger hands won't feel as comfortable and your fingers might go past the two main click buttons.

Claw Grip: Hand Size Recommendation
Claw Grip: Small Hand
Claw Grip: Medium Hand
Claw Grip: Large Hand
Claw Grip: X.Large Hand

With a claw grip, only people with extra large hands find the mouse to be too small. When curling up your fingers, even large hands should feel comfortable controlling this mouse.

Fingertip Grip: Hand Size Recommendation
Fingertip Grip: Small Hand
Fingertip Grip: Medium Hand
Fingertip Grip: Large Hand
Fingertip Grip: X.Large Hand

The design of the Razer Viper Ultimate lends itself very well to the fingertip grip. Most people, other than some with very small hands, should have nice control over the mouse using this grip.

Battery Type
Use When Charging
On/Off Activation
Auto Off And On/Off Switch

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 in directly in your PC. The dock can also give you information regarding your mouse battery.

Cable Length 6.0 ft (1.8 m)
Port Type: Mouse End
Micro USB
Port Type: PC End

The cable of the Razer Viper Ultimate is such an improvement over other Razer products. It feels very similar to the cable of the Glorious Model O. It's light, doesn't hold as many kinks, and feels better-made. It doesn't create any drag when moving the mouse around, which is great. If you don't want a charging cradle and would simply want this mouse in a wired design, check out the Razer Viper.

In The Box

  • Razer Viper Ultimate mouse
  • USB receiver
  • Charging cradle
  • USB to micro-USB cable
  • Manuals

Sensor Technology
Optical (LED)
Works On Glass
Click Latency
Click Latency: Receiver
9 ms
Click Latency: Bluetooth
Click Latency: Wired
7 ms

The click latency, both wired and wireless, of the Razer Viper Ultimate is quite impressive. Even most competitive gamers won't notice any delay when playing.

Minimum CPI (DPI)
100 CPI (DPI)
Maximum CPI (DPI)
20000 CPI (DPI)
CPI (DPI) Adjustment Steps
50 CPI (DPI)
CPI (DPI) Error
4.7 %
Mouse Acceleration
Lift Off Distance
1.2 mm
Maximum Polling Rate
1000 Hz

The Razer Viper Ultimate's perfomance is remarkable. It has one of the widest CPI ranges we've tested so far and you can customize it fairly precisely to match your preferred settings. However, when using the mouse slowly, the CPI error would be more around 10%, while when using it at fast speeds, it would be around -1.0%. The mouse seems to be more accurate when used in faster motion.

Buttons Activation
Optical And Mechanical
Number Of Buttons
Number Of Programmable Inputs
Profile Switching Button
CPI (DPI) Switching Button

You can reprogram every button on the Razer Viper Ultimate to whatever you like, even the scroll up and down. There's no dedicated profile switching button, but you can assign it inside the app quite easily. You can also set a HyperShift button, which enables another set of settings on the mouse, increasing your customization.

Mouse Wheel
Vertical Wheel
Vertical Wheel Incremented
Vertical Wheel Unlock Button
Vertical Wheel Tilt
Horizontal Wheel
Horizontal Wheel Incremented
No horizontal Wheel

The scroll wheel of the Razer Viper Ultimate is pretty standard from other gaming mice and doesn't offer anything different. Its incremented design offers great feedback, but isn't very useful for fast scrolling through long documents.

Operating System And Software
Operating System And Software
Compatible Software Option
Software Name Razer Synapse 3
Software Windows Compatibility
Software macOS Compatibility
Account Needed
On-Board Memory
CPI (DPI) Adjustment
Polling Rate Adjustment
Profile Configuration
RGB On/Off

The Razer Synapse 3 software is very good. You can easily customize most aspects of the mouse, and can save your settings on the mouse's onboard memory, meaning you won't have to download the software on another computer when using the mouse. It's unfortunately not available on macOS.

Operating System And Software
Mouse Compatibility
Windows Compatibility Fully
macOS Compatibility Partially

Although it's fully compatible with Windows, there are some buttons that won't work on macOS. When setting the mouse in 'right-handed mode' on Mac, the right side buttons won't work. Also, the rest of the buttons are set to their default settings, and can't be changed.

Compared to other mice

The Razer Viper Ultimate is an amazing wireless gaming mouse. It comes with a unique charging dock and offers amazingly low latency, both wired and wireless, which is quite impressive. It has superb performance and has two side buttons on both sides of the mouse. However, its software isn't compatible with macOS, while the Logitech G Pro Wireless is, which is its main competitor. See our recommendations for the best wireless gaming mouse, the best wireless mouse, and the best FPS mouse. If you're interested in Razer products, also check out the best Razer mice.

Logitech G Pro Wireless

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, when used wired, is noticeably lighter and less cumbersome. The design of the Razer is also more ergonomic. On the other hand, the G Pro Wireless is a bit more versatile since it is fully compatible with macOS, which the Viper Ultimate isn't. You can also have a higher CPI with the Razer, but we don't expect many people to use such a high sensitivity anyway.

Razer Basilisk Ultimate

The Razer Viper Ultimate and the Razer Basilisk Ultimate are very similar gaming mice. They're both basically the same mice internally, but have a different shape and design to them. 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.

Razer DeathAdder V2

The Razer Viper Ultimate and the Razer DeathAdder V2 are similarly performing mice for FPS gaming. The Viper Ultimate is wireless and a little bit lighter, while the V2 is wired. The Viper Ultimate's click latency is excellent, and almost as low as the V2, even when used wirelessly. The V2 is a better mouse for palm grip, as it's suitable for every hand size with this grip type, while the Viper Ultimate is better in fingertip grip for those with larger hands.

Glorious Model O

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 Viper Ultimate is impressively lightweight considering it's a wireless mouse. If you have small hands, you may find the Model O a little bit too large, while the Viper Ultimate may be more comfortable. Both have impressively low latency, and a wide adjustable CPI range.

Razer DeathAdder Elite

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 also lower, and when used wired, its cable is lighter and better built than the DeathAdder's. On the other hand, the DeathAdder has a right-slanted design and is slightly better for people with larger hands.

Razer Mamba Elite

The Razer Mamba Elite is a wired gaming mouse, while the Razer Viper Ultimate is wireless. Both mice are fairly lightweight, though the Viper Ultimate is lighter. The Viper Ultimate is most recommended for people with small or medium hands and those with very large hands will likely only find the Viper Ultimate comfortable in fingertip grip, while the Mamba 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.

Logitech G502 Hero

The Razer Viper Ultimate is a noticeably better performing mouse than the wired Logitech G502 Hero. The Viper 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 G502, especially with a palm grip. 

Logitech G903

The Razer Viper Ultimate is a better overall gaming mouse than the Logitech G903. It's lighter, more comfortable to use (especially if you prefer the fingertip grip), and its sensor is amazing. It comes with a nice RGB charging station. The Viper also has optical switches according to the manufacturer. On the other hand, the G903 is a bit more versatile, thanks to its wheel unlock button and the fact that it's fully compatible with macOS.

Razer Viper

The Razer Viper and Viper Ultimate are nearly identical. The Viper Ultimate is wireless, while the Viper is wired-only. The Viper is actually a few grams lighter than the Ultimate, but other than that, they are pretty much the same. You get a nice RGB charging cradle with the wireless Viper Ultimate and the cable is a bit more flexible. 

BenQ Zowie S2

The Zowie S2 is a very different mouse than the Razer Viper Ultimate. The S2 is a wired mouse and it has a higher back hump, which might be better for claw grip users. On the other hand, the Viper Ultimate is wireless, slightly lighter, and feels more high-end. If you were to use the Razer wired, its cable is better than the Zowie's. It also has RGB lighting that can be customized inside its software.

Razer Viper Mini

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 wireless. 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.

Corsair HARPOON RGB Wireless

The Razer Viper Ultimate is a better gaming mouse than the Corsair HARPOON RGB Wireless. The Viper is larger but lighter and is much more comfortable and durable feeling. Both mice are only suitable for palm grip with small or medium hands, and while the Corsair can be used by all hand sizes with claw grip, people with extra-large hands will only get a comfortable grip of the Viper when using fingertip grip. The Viper has a much wider and more adjustable CPI range, though the sensor on the Corsair is more accurate. The Viper Ultimate has more programmable buttons, and its L/R click buttons are optical instead of mechanical.

Alienware AW610M

The Razer Viper Ultimate is a much better wireless gaming mouse than the Alienware AW610M. The Razer is much lighter, feels better built, has a much better cable, much lower click latency, better sensor performance, and more programmable buttons. While the Alienware is suitable for all hand sizes with palm grip, and larger hands for claw grip, the Razer can only be used by extra-large hands with a fingertip grip.


The SteelSeries Rival 600 is a much better gaming mouse than the ROCCAT Tyon. The Rival 600 is much lighter and is better suited for medium or large hands with fingertip grip. The Rival 600 also has a much wider adjustable CPI range and a much lower lift off distance. On the other hand, the Tyon has way more programmable buttons, though its software doesn't work on macOS like SteelSeries' does.

VicTsing Wireless Gaming Mouse

The Razer Viper Ultimate is a much better gaming mouse than the VicTsing Wireless Gaming Mouse. The Razer is much lighter, better for more hand sizes with claw grip, has significantly lower click latency, and has a much better performing sensor. The Razer has 10 buttons that can be programmed within Razer's software, while the VicTsing doesn't have a companion program to make any customization options.

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