Between the OP1 8K and ULX, the OP1 8K comes out ahead in polling rate, while the ULX wins on weight and wireless. Overall, the OP1 8K scores 87.2 and the ULX scores 81.5 on our Mars Score.
Which should you buy?
The OP1 8K edges ahead on the Mars Score (87.2 vs 81.5), but the 5.7-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the OP1 8K if you care most about polling rate. The biggest gaps in its favor are polling rate.
Pick the ULX if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight, wireless, battery.
Both ship with comparable max dpi, buttons, so those specs don't separate the two — focus on the differences below.
Bottom line: the OP1 8K is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Endgame Gear - OP1 8K wins
- ▲Polling rate — 100.00% more. 8000 Hz vs 4000 Hz.
Why Finalmouse - ULX wins
- ▲Weight — 11.00 g less. 39 vs 50.
- ▲Wireless: true (vs false).
- ▲Battery: 100 h vs 0 h.
Spec comparison
Sensor
| Spec | Endgame Gear - OP1 8K | Finalmouse - ULX |
|---|---|---|
| Max DPI | 26000 | 26000 |
| Max IPS | 650 | 650 |
| Polling rate | 8000 Hzlead | 4000 Hz |
Design
| Spec | Endgame Gear - OP1 8K | Finalmouse - ULX |
|---|---|---|
| Weight | 50 g | 39 glead |
| Buttons | 6 | 6 |
| Shape | Symmetrical | Symmetrical |
Connectivity
| Spec | Endgame Gear - OP1 8K | Finalmouse - ULX |
|---|---|---|
| Wireless | false | truelead |
| Battery | 0 h | 100 hlead |
Frequently asked
Spec-level deep dives
More from the same brands
vsMars is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. Learn more.