Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Finalmouse - ULX | Razer - DeathAdder V3 Pro |
|---|---|---|
| Weight | 39 g | 63 g |
| Max DPI | 26000 | 30000 |
| Battery | 100 h | 90 h |
| Buttons | 6 | 5 |
Between the ULX and DeathAdder V3 Pro, the ULX comes out ahead in weight / battery, while the DeathAdder V3 Pro wins on max dpi. Overall, the ULX scores 71.9 and the DeathAdder V3 Pro scores 68.5 on our Mars Score.
Which should you buy?
The ULX edges ahead on the Mars Score (71.9 vs 68.5), but the 3.4-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, buttons. The single most decisive one: Weight — 24.00 g less. 39 vs 63.
Pick the DeathAdder V3 Pro if you care most about max dpi. Its strongest claims are max dpi. The single most decisive one: Max DPI — 15.38% more. 30000 vs 26000.
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.
Which should you buy: Finalmouse - ULX or Razer - DeathAdder V3 Pro?
Finalmouse - ULX leads the current Mars Score by 3.4 points.The more useful decision is the trade-off behind that result: compare max dpi, weight against the way you will actually use the product.
Choose Finalmouse - ULX if…
Finalmouse - ULX has the measurable edge on weight g, battery h, button count.
Choose Razer - DeathAdder V3 Pro if…
Razer - DeathAdder V3 Pro has the measurable edge on max dpi.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Finalmouse - ULX wins
- ▲Weight — 24.00 g less. 39 vs 63.
- ▲Battery — 11.11% more. 100 h vs 90 h.
- ▲Buttons — 1.00 more. 6 vs 5.
Why Razer - DeathAdder V3 Pro wins
- ▲Max DPI — 15.38% more. 30000 vs 26000.
Spec comparison
Sensor
| Spec | Finalmouse - ULX | Razer - DeathAdder V3 Pro |
|---|---|---|
| Max DPI | 26000 | 30000lead |
| Max IPS | 650 | 750lead |
| Polling rate | 4000 Hz | 4000 Hz |
Design
| Spec | Finalmouse - ULX | Razer - DeathAdder V3 Pro |
|---|---|---|
| Weight | 39 glead | 63 g |
| Buttons | 6lead | 5 |
| Shape | Symmetrical | Right-handed |
Connectivity
| Spec | Finalmouse - ULX | Razer - DeathAdder V3 Pro |
|---|---|---|
| Wireless | true | true |
| Battery | 100 hlead | 90 h |