Between the ULX and Viper V3 Pro, the ULX comes out ahead in weight and battery, while the Viper V3 Pro wins on polling rate and max dpi. Overall, the ULX scores 81.5 and the Viper V3 Pro scores 88.8 on our Mars Score.
Which should you buy?
The Viper V3 Pro edges ahead on the Mars Score (81.5 vs 88.8), but the 7.3-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the ULX if you carry the device everywhere and weight or thickness has been the deciding factor before. The biggest gaps in its favor are weight, battery.
Pick the Viper V3 Pro if you care most about polling rate and max dpi. Its strongest claims are polling rate, max dpi.
Both ship with comparable wireless, buttons, 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 Finalmouse - ULX wins
- ▲Weight — 15.00 g less. 39 vs 54.
- ▲Battery — 5.26% more. 100 h vs 95 h.
Why Razer - Viper V3 Pro wins
- ▲Polling rate — 100.00% more. 8000 Hz vs 4000 Hz.
- ▲Max DPI — 34.62% more. 35000 vs 26000.
Spec comparison
Sensor
| Spec | Finalmouse - ULX | Razer - Viper V3 Pro |
|---|---|---|
| Max DPI | 26000 | 35000lead |
| Max IPS | 650 | 750lead |
| Polling rate | 4000 Hz | 8000 Hzlead |
Design
| Spec | Finalmouse - ULX | Razer - Viper V3 Pro |
|---|---|---|
| Weight | 39 glead | 54 g |
| Buttons | 6 | 6 |
| Shape | Symmetrical | Symmetrical |
Connectivity
| Spec | Finalmouse - ULX | Razer - Viper V3 Pro |
|---|---|---|
| Wireless | true | true |
| Battery | 100 hlead | 95 h |
Frequently asked
Spec-level deep dives
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