Between the G309 Lightspeed and Viper V3 Pro, the G309 Lightspeed comes out ahead in battery, while the Viper V3 Pro wins on polling rate and max dpi. Overall, the G309 Lightspeed scores 68.2 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 20.6 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 G309 Lightspeed if you care most about battery. The biggest gaps in its favor are battery.
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, 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 Logitech - G309 Lightspeed wins
- ▲Battery — 215.79% more. 300 h vs 95 h.
Why Razer - Viper V3 Pro wins
- ▲Polling rate — 700.00% more. 8000 Hz vs 1000 Hz.
- ▲Max DPI — 36.72% more. 35000 vs 25600.
- ▲Weight — 14.00 g less. 54 vs 68.
Spec comparison
Sensor
| Spec | Logitech - G309 Lightspeed | Razer - Viper V3 Pro |
|---|---|---|
| Max DPI | 25600 | 35000lead |
| Max IPS | 400 | 750lead |
| Polling rate | 1000 Hz | 8000 Hzlead |
Design
| Spec | Logitech - G309 Lightspeed | Razer - Viper V3 Pro |
|---|---|---|
| Weight | 68 g | 54 glead |
| Buttons | 6 | 6 |
| Shape | Right-handed | Symmetrical |
Connectivity
| Spec | Logitech - G309 Lightspeed | Razer - Viper V3 Pro |
|---|---|---|
| Wireless | true | true |
| Battery | 300 hlead | 95 h |
Spec-level deep dives
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