The Cooler Master MM831 is a versatile wireless gaming mouse. It feels well-built and has a right-handed shape best suited for palm or claw grip for nearly all hand sizes. There are four RGB lighting zones, including the logo, the mouse wheel, the CPI indicator, and a continuous strip that runs from one side to the other around the back. It also has good click latency and sensor performance, and you can set five CPI profiles and cycle between them using the button behind the scroll wheel. Unfortunately, it's pretty heavy, especially for competitive or reaction-based gaming. Also, the customization software is only compatible with Windows, though there's onboard storage for your settings.
Our Verdict
The Cooler Master MM831 is very good for office use. It feels well-built, has a good number of programmable buttons, and has a right-handed shape that's best-suited for a palm grip for all but extra-large hands and a claw grip for all hand sizes. You can use it wired or connect wirelessly with its USB receiver or Bluetooth. Unfortunately, its scroll wheel lacks L/R tilt buttons and doesn't unlock for free scrolling.
- Feels well-built.
- Connects wirelessly with its USB receiver or via Bluetooth.
- Comfortable shape well-suited to all grip types and nearly all hand sizes.
- Scroll wheel lacks L/R tilt buttons and doesn't unlock for free scrolling.
The Cooler Master MM831 is decent for FPS gaming, though many gamers may find it's too heavy for quick, responsive mouse movements, the mouse feet don't glide very well directly on desks, and you can only adjust the CPI by increments of 100. Despite all this, this mouse feels well-built, has good click latency, a very low lift-off distance, and a wide CPI range.
- Feels well-built.
- Good click latency.
- Heavy.
- Cable is somewhat stiff and the mouse feet don't glide as smoothly on some surfaces.
The Cooler Master MM831 is good for MMO gaming, though it doesn't have nearly as many buttons as a dedicated MMO mouse. That said, most of the buttons it does have are programmable. It also feels well-built, has good click latency, and is well-suited for a palm or claw grip for nearly all hand sizes.
- Feels well-built.
- Good click latency.
- Comfortable shape well-suited to all grip types and nearly all hand sizes.
- Not nearly as many buttons as a dedicated MMO mouse.
- Cable is somewhat stiff and the mouse feet don't glide as smoothly on some surfaces.
The Cooler Master MM831 is inadequate for ultra-light gaming as it's about twice the weight of some of the lightest ultra-light mice available. The mouse feet also don't glide very smoothly directly on desks, though they glide better on mousepads. That said, this mouse does feel well-built, has good click latency, and has a right-handed shape that's best-suited for a palm or claw grip for nearly all hand sizes.
- Good click latency.
- Heavy.
- Cable is somewhat stiff and the mouse feet don't glide as smoothly on some surfaces.
The Cooler Master MM831 is great for travel use, though it's fairly bulky and may not fit in most laptop cases. That said, it feels well-built, and you can use it wired or connect wirelessly with its USB receiver or Bluetooth. It also has a right-handed shape that's ideally suited for a palm or claw grip for nearly all hand sizes. Unfortunately, the customization software is only compatible with Windows, but there's onboard memory for storing your settings if you'll be switching between computers.
- Feels well-built.
- Onboard memory.
- Connects wirelessly with its USB receiver or via Bluetooth.
- Has a storage compartment for its USB receiver when not in use.
- Bulky; may not fit into some laptop cases.
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Differences Between Sizes And Variants
The Cooler Master MM831 we tested is black, and there aren't any other color variants. You can see the label for our unit here.
Popular Mouse Comparisons
The Cooler Master MM831 is Cooler Master's first wireless mouse and supports wireless charging with Qi 1.2 Standard devices, though this isn't something we test. Unfortunately, most wireless gaming mice are significantly lighter. It's about twice the weight of the lightest wireless gaming mouse we've tested, so it isn't a good pick if you're bothered by weight. That said, it may be a good choice if you're looking for a mouse for casual gaming and productivity. It also makes a great travel option, despite being fairly bulky.
For more recommendations, check out our picks for the best mouse, the best gaming mouse, or the best wireless mouse.
While similarly named, the Cooler Master MM830 and the Cooler Master MM831 are versatile gaming mice with significant differences. The MM830 is a wired-only mouse intended for multiple game genres. It also has an OLED screen and more side buttons. Comparatively, the MM831 is versatile enough for gaming, productivity, or even travel use and connects wirelessly with its USB receiver or Bluetooth. It also has more extensive RGB lighting, a higher maximum CPI, and a lower lift-off distance. Both mice are best-suited for a palm or claw grip for nearly all hand sizes.
The Razer Viper Mini is an excellent wired ultra-light gaming mouse, while the Cooler Master MM831 is a versatile wireless gaming mouse. The Razer is about half the weight but feels more sturdy, has much better cable and mouse feet, and much lower click latency. Comparatively, the Cooler Master has a much higher maximum CPI, a lower lift-off distance, and extensive RGB, which the Razer lacks. The Razer is best-suited for a fingertip grip for all hand sizes, while the Cooler Master is ideal for a palm or claw grip for nearly all hand sizes.
The GLORIOUS Model D has better performance than the Cooler Master MM831, but the Cooler Master is more versatile. It can be used wired or wirelessly either with its USB receiver or Bluetooth. It also feels sturdier, has a wider CPI range, and a lower lift-off distance. On the other hand, The GLORIOUS D is a wired-only mouse that's significantly lighter. It has a much more flexible cable, smoother gliding mouse feet, and significantly lower click latency. Both mice are well-suited for all grip types and most hand sizes.
The Razer DeathAdder V2 is a better FPS gaming mouse than the Cooler Master MM831. The Razer is significantly lighter, has a much more flexible cable and mouse feet that glide more smoothly. It also has a more precisely adjustable CPI and a much lower click latency. Comparatively, you can use the Cooler Master either wired or wirelessly with its USB receiver or via Bluetooth. Both mice are well-suited for all grip types, but the Razer is best-suited for a palm grip, while the Cooler Master is best-suited for a claw grip.
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