The Corsair M65 RGB ULTRA WIRELESS is a heavy wireless gaming mouse with a right-handed shape and a thumb rest. It's well-suited for most hand sizes and all grip types. You can use it wirelessly via Bluetooth or its USB receiver, or you can use it wired with its rubber charging cable. It has three side buttons, including a dedicated sniper button and two dedicated CPI buttons behind the scroll wheel. Also, it has a gyroscope and accelerometer so you can perform mouse tilt gestures. Performance-wise, it has low click latency, a very low lift-off distance, and a very wide CPI range with a CPI that you can adjust very precisely in increments of one.
Note: Corsair revised the advertised polling rate of this mouse since we first tested it. See the Sensor Specifications section.
Our Verdict
The Corsair M65 RGB ULTRA WIRELESS is excellent for office use. It feels very well-built, and its right-handed shape is suitable for most hand sizes with any grip type. You can remap all its buttons, and you can also set macros using the iCUE software. You can use it wirelessly via Bluetooth or its USB receiver. Unfortunately, its scroll wheel lacks L/R tilt buttons and a free-scrolling mode.
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Connects via Bluetooth or USB receiver.
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USB receiver storage within mouse.
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Suitable for most hand sizes with any grip type.
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Many programmable buttons.
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Onboard memory.
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Scroll wheel lacks L/R tilt buttons and free-scrolling.
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Bulky; may not fit in laptop bags.
The Corsair M65 RGB ULTRA WIRELESS is very good for FPS gaming. It has low click latency over both a wired and USB receiver connection, a very low lift-off distance, and a very wide CPI range, with a CPI that you can adjust very precisely in increments of one. It feels very well-built, and it's suitable for most hand sizes with any grip type. Unfortunately, it's very heavy even in its lightest configuration, and its rubber cable isn't flexible.
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Low click latency.
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Precisely adjustable CPI in increments of one.
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Very low lift-off distance.
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USB receiver storage within mouse.
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Programmable tilt gestures.
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Onboard memory.
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Heavy.
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Rubber cable isn't flexible.
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Bulky; may not fit in laptop bags.
The Corsair M65 RGB ULTRA WIRELESS is great for MMO gaming. While it doesn't have as many side buttons as dedicated MMO mice, you can reprogram all buttons it does have, and you can program additional tilt inputs. It feels very well-built and has a right-handed shape that's well-suited for most hand sizes with any grip type. Performance-wise, it has low click latency, a very low lift-off distance, and a CPI you can adjust very precisely in increments of one within a very wide range. Unfortunately, its cable is rubber, and it isn't flexible.
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Low click latency.
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Precisely adjustable CPI in increments of one.
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Very low lift-off distance.
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USB receiver storage within mouse.
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Programmable tilt gestures.
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Onboard memory.
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Doesn't have as many buttons as dedicated MMO mice.
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Rubber cable isn't flexible.
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Bulky; may not fit in laptop bags.
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USB receiver storage within mouse.
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Onboard memory.
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Bulky; may not fit in laptop bags.
- 7.5 Work
- 8.2 Video Games (FPS)
- 8.1 Video Games (MMO)
- 9.3 Raw Performance
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Updated Nov 26, 2024:
We've updated this review to reflect that this mouse now has a maximum polling rate of 1000Hz. See the Sensor Specifications for more information.
- 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 Dec 07, 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 Jul 27, 2023: We've added a link to the newly-reviewed Corsair DARKSTAR WIRELESS to the Additional Buttons section of this review.
- Updated Mar 28, 2023: We've added details of the white colorway variant of this mouse in the Differences Between Sizes And Variants section of this review.
- Updated Mar 01, 2023: 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 Feb 22, 2023: 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 Dec 01, 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 Nov 17, 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 Oct 29, 2021: Review published.
- Updated Oct 22, 2021: Early access published.
- Updated Oct 18, 2021: Our testers have started testing this product.
- Updated Oct 15, 2021: The product has arrived in our lab, and our testers will start evaluating it soon.
- Updated Oct 10, 2021: We've purchased the product and are waiting for it to arrive in our lab.
Differences Between Sizes And Variants
The Corsair M65 RGB ULTRA WIRELESS is available in a black or white colorway. There's also a wired model of this mouse, the Corsair M65 RGB ULTRA, with a maximum polling rate of 8000Hz. We bought and tested the M65 RGB ULTRA WIRELESS in the black colorway, and you can see our unit's label here.
Compared To Other Mice
The Corsair M65 RGB ULTRA WIRELESS is a very good wireless gaming mouse, and it's a continuation of the M65 lineup, which includes the Corsair M65 PRO RGB and the Corsair M65 RGB Elite. While it's much heavier than most recent gaming mice, it has a gyroscope and an accelerometer, which are fairly rare features. You can adjust its CPI in increments of one, which is more precise than most mice we've tested. However, it uses a rubber cable that isn't flexible, but you can always swap it out with a better one if you prefer.
See our recommendations for the best gaming mouse, the best wireless gaming mouse, and the best Corsair mouse.
The Corsair DARK CORE RGB PRO and the Corsair M65 RGB ULTRA WIRELESS are both good wireless gaming mice. The M65 RGB ULTRA WIRELESS is lighter, and it comes with weights if you prefer heavier mice. It has a wider CPI range and a very low lift-off distance, as well as more programmable inputs thanks to its tilt gesture support. Also, while its charging cable is rubber, it feels more flexible and doesn't retain kinks like the DARK CORE RGB PRO's braided cable. On the other hand, the DARK CORE RGB PRO has lower click latency, and it's better suited for larger hands using a palm or claw grip.
The Corsair M65 RGB Elite and the Corsair M65 RGB ULTRA WIRELESS are very similar mice, but the RGB Elite is wired-only while the RGB ULTRA WIRELESS also has wireless capabilities. The RGB ULTRA WIRELESS also has a lower lift-off distance, lower click latency, and it has a gyroscope and accelerometer within it that let you set functions to mouse tilts in any direction. Comparatively, the RGB Elite is slightly lighter and feels better built.
The Corsair M65 RGB ULTRA WIRELESS and the Corsair DARKSTAR WIRELESS are wireless gaming mice with tilt gesture support. The M65 RGB ULTRA WIRELESS is slightly heavier and has better build quality. It has three programmable side buttons. On the other hand, the DARKSTAR WIRELESS has somewhat better gaming performance overall and better quality feet. It also offers more programmable buttons, including a six-button cluster on the left side of the mouse.
The Corsair M65 RGB ULTRA WIRELESS is a good wireless gaming mouse, and the Razer Basilisk V3 is an excellent wired gaming mouse. You can use the Corsair wireless via its USB receiver or Bluetooth, and you can adjust its CPI more precisely in increments of one. Also, it comes with three weights in case you prefer heavier mice. On the other hand, the Razer is a wired-only mouse that's slightly lighter. It has a better quality cable and better quality mouse feet, more programmable buttons thanks to the Hypershift feature and much lower click latency.
The M65 RGB ULTRA WIRELESS is an updated, wireless version of the M65 PRO RGB. You can use the RGB ULTRA WIRELESS via Bluetooth or its receiver, while you can use the PRO RGB wired-only. Also, the RGB ULTRA WIRELESS has a higher maximum CPI, lower click latency, and smoother-gliding mouse feet. Also, you can set macros to and reprogram the tilt gesture functions. Comparatively, the RGB PRO feels better built.
The Corsair SABRE PRO is an excellent wired gaming mouse, while the Corsair M65 RGB ULTRA WIRELESS is a good wireless gaming mouse. The SABRE PRO is lighter, and it has a better quality cable that feels more flexible than the M65 RGB ULTRA WIRELESS's rubber cable. Also, it has a lower click latency, and its maximum polling rate is 8000Hz. On the other hand, you can use the M65 RGB ULTRA WIRELESS via Bluetooth or its USB receiver, and it has more programmable inputs since you can set tilt gesture commands.
The GLORIOUS Model D is an excellent ultra-light wired gaming mouse, while the Corsair M65 RGB ULTRA WIRELESS is a good wireless gaming mouse. The GLORIOUS has a honeycomb cutout design, and it's significantly lighter than the Corsair. Also, the GLORIOUS has a more flexible cable and smoother-gliding mouse feet. You can use the Corsair via Bluetooth or its USB receiver, it feels better built, and it comes with extra weight if you prefer heavier mice. Also, it has a lower lift-off distance, a wider CPI range, with a CPI you can adjust much more precisely in increments of one. It has a dedicated sniper button and tilt gesture support.
Test Results
The Corsair M65 RGB ULTRA WIRELESS looks very similar to the Corsair M65 RGB ELITE, but it has a textured pattern on its thumb rest and no RGB on its scroll wheel.
The Corsair M65 RGB ULTRA WIRELESS feels very well-built thanks to its solid-feeling metal frame. There's no significant rattling or wobbling with any of the pieces, though there's a very slight wobble to the L/R click buttons. Unfortunately, the side panels flex near the back, where there's a gap between them and the palm rest.
The Corsair M65 RGB ULTRA WIRELESS is fairly heavy, even in its lightest configuration, including removing the three 3.13g weights, the three 0.81g screws, and the 1.65g receiver. Unlike other mice, where you install the weights in one area, the Corsair M65 WIRELESS has three zones for the weights. If you're interested in a significantly lighter multi-genre mouse, check out the SteelSeries Aerox 5 Wireless.
Corsair advertises that the battery can last up to 90 hours with the USB receiver and up to 120 hours over Bluetooth. The LED light between the two CPI switching buttons serves as a battery indicator, and it flashes red when at low battery.
The Corsair M65 WIRELESS has a fairly stiff rubber cable that tends to curl up during fast movements.
The mouse feet glide well both directly on desks and mousepads. However, you need to ensure you properly install the screws; otherwise, they might scratch or snag onto your surface.
- Corsair M65 RGB ULTRA WIRELESS
- USB receiver
- 3x 3.13g weights
- 3x 0.81g weight screws
- USB-C to USB-A cable
- User documentation
You can remap and set macros to all buttons on the Corsair M65 RGB ULTRA WIRELESS. Also, this mouse has a gyroscope and accelerometer, providing four directional tilt gestures you can program. You can also adjust the tilt threshold for each direction from a minimum of 10 degrees to a maximum of 80 degrees. You need to set the lift-off distance to Low or higher to enable the tilt gestures. Unfortunately, you can't save tilt gestures to the onboard memory. If you're interested in a similar mouse with more programmable buttons, including a six-button layout side panel, check out the Corsair DARKSTAR WIRELESS.
The polling rates available on the Corsair M65 RGB ULTRA WIRELESS are 125Hz, 250Hz, 500Hz, and 1000Hz.
Note: Corsair advertised a maximum polling rate of 2000Hz when we first tested this mouse. However, during testing, we discovered that this was not a true implementation of 2000Hz polling. Instead of sending one report every 0.5 milliseconds, as a proper 2000Hz update would, this mouse sent two reports to your computer at 1 millisecond intervals and didn't provide any meaningful performance benefit.
Corsair has since removed the advertised 2000Hz polling rate from the companion software and some of the marketing materials. The removal of this setting doesn't affect the mouse's performance, and our test results remain unchanged.
If you want to learn more, see this post in the comments.
The scroll wheel on the Corsair M65 RGB ULTRA WIRELESS feels fairly precise, with well-defined steps. It also has a grippy, rubberized surface that makes it easy to scroll.
The Corsair iCUE software offers many customization options, like remapping keys, setting macros, and creating profiles. Button assignment and saving profiles to the onboard memory is a bit unintuitive, but the software does include tutorials. Unfortunately, the tilt gesture functions aren't saved to the onboard memory, and you need to have the software running in the background for them to work.