Razer - DeathAdder V4 Pro vs Razer - Viper V3 Pro

These two are nearly even on the Mars Score (79.3 vs 77.6). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.

Pick the DeathAdder V4 Pro if you care most about battery / max dpi. The biggest gaps in its favor are battery, max dpi, buttons. The single most decisive one: Battery — 57.89% more. 150 h vs 95 h.

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 weight. The single most decisive one: Weight — 2.00 g less. 54 vs 56.

Both ship with comparable polling rate, wireless, so those specs do not separate the two — focus on the differences below.

Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.