Between the MX Master 4 and Viper V3 Pro, the MX Master 4 comes out ahead in battery and buttons, while the Viper V3 Pro wins on polling rate and max dpi. Overall, the MX Master 4 scores 35 and the Viper V3 Pro scores 88.8 on our Mars Score.
Which should you buy?
The Viper V3 Pro is the clear pick on raw spec strength, leading by 53.8 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the MX Master 4 if you care most about battery and buttons. The biggest gaps in its favor are battery, buttons.
Pick the Viper V3 Pro if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are polling rate, max dpi, weight.
Both ship with comparable wireless, so those specs don't separate the two — focus on the differences below.
Bottom line: the Viper V3 Pro is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Logitech - MX Master 4 wins
- ▲Battery — 1668.42% more. 1680 h vs 95 h.
- ▲Buttons — 1.00 more. 7 vs 6.
Why Razer - Viper V3 Pro wins
- ▲Polling rate — 6300.00% more. 8000 Hz vs 125 Hz.
- ▲Max DPI — 337.50% more. 35000 vs 8000.
- ▲Weight — 96.00 g less. 54 vs 150.
Spec comparison
Sensor
| Spec | Logitech - MX Master 4 | Razer - Viper V3 Pro |
|---|---|---|
| Max DPI | 8000 | 35000lead |
| Max IPS | 0 | 750lead |
| Polling rate | 125 Hz | 8000 Hzlead |
Design
| Spec | Logitech - MX Master 4 | Razer - Viper V3 Pro |
|---|---|---|
| Weight | 150 g | 54 glead |
| Buttons | 7lead | 6 |
| Shape | Right-handed | Symmetrical |
Connectivity
| Spec | Logitech - MX Master 4 | Razer - Viper V3 Pro |
|---|---|---|
| Wireless | true | true |
| Battery | 1680 hlead | 95 h |
Frequently asked
Spec-level deep dives
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