ATK U2 V2 Ultimate vs Razer Viper V4 Pro
ATK U2 V2 Ultimate
45 g · PAW3950 Ultra · Wireless · 2025Razer Viper V4 Pro
49 g · Razer Focus Pro 50K Gen-3 · Wireless · 2026ATK U2 V2 Ultimate and Razer Viper V4 Pro are neck and neck on specs: gear scores 96 and 96.
- ATK U2 V2 Ultimate is 4 g lighter (45 g vs 49 g).
- Max DPI: Razer Viper V4 Pro leads (50,000 vs 42,000).
ATK U2 V2 Ultimate
If you care most about weight.
Razer Viper V4 Pro
If you care most about max DPI.
Spec-by-spec comparison
| ATK U2 V2 Ultimate | Razer Viper V4 Pro | |
|---|---|---|
| 96 | Gear score | 96 |
| 45 g | Weight | 49 g |
| PAW3950 Ultra | Sensor | Razer Focus Pro 50K Gen-3 |
| 42,000 | Max DPI | 50,000 |
| 8000 Hz | Polling rate | 8000 Hz |
| Wireless | Connection | Wireless |
| — | Battery life | 180 h |
| 2025 | Release year | 2026 |
The gear score is computed from specifications only (e.g. for a mouse: weight, sensor, polling rate, connection and release year). It isn’t a lab test and doesn’t measure personal preferences like shape or grip.
Which one adds more to your setup?
The scanner finds your graphics card, CPU, RAM, monitor, mouse and keyboard in under a minute. You get a score out of 100, estimated FPS in games, a bottleneck check and upgrade tips made for you.
FAQ
Is ATK U2 V2 Ultimate or Razer Viper V4 Pro better?
ATK U2 V2 Ultimate and Razer Viper V4 Pro are neck and neck on specs: gear scores 96 and 96. ATK U2 V2 Ultimate is 4 g lighter (45 g vs 49 g). Max DPI: Razer Viper V4 Pro leads (50,000 vs 42,000).
Which one is lighter?
ATK U2 V2 Ultimate is 4 g lighter (45 g vs 49 g).