Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Corsair - M75 Air Wireless | BenQ - EC3-CW |
|---|---|---|
| Max DPI | 26000 | 3200 |
| Polling rate | 2000 Hz | 1000 Hz |
| Battery | 100 h | 70 h |
| Weight | 60 g | 75 g |
| Buttons | 6 | 5 |
Between the M75 Air Wireless and EC3-CW, the M75 Air Wireless comes out ahead in max dpi / polling rate, while the EC3-CW wins on several specs. Overall, the M75 Air Wireless scores 64.9 and the EC3-CW scores 51.1 on our Mars Score.
Which should you buy?
The M75 Air Wireless is the clear pick on raw spec strength, leading by 13.8 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 M75 Air Wireless if you care most about max dpi / polling rate. The biggest gaps in its favor are max dpi, polling rate, battery, among others. The single most decisive one: Max DPI — 712.50% more. 26000 vs 3200.
The EC3-CW similarly does not carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable wireless, so those specs do not separate the two — focus on the differences below.
Bottom line: the M75 Air Wireless is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: Corsair - M75 Air Wireless or BenQ - EC3-CW?
Corsair - M75 Air Wireless leads the current Mars Score by 13.8 points.The more useful decision is the trade-off behind that result: compare max dpi, polling rate, weight against the way you will actually use the product.
Choose Corsair - M75 Air Wireless if…
Corsair - M75 Air Wireless has the measurable edge on max dpi, polling rate hz, battery h.
Choose BenQ - EC3-CW if…
BenQ - EC3-CW does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
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 Corsair - M75 Air Wireless wins
- ▲Max DPI — 712.50% more. 26000 vs 3200.
- ▲Polling rate — 100.00% more. 2000 Hz vs 1000 Hz.
- ▲Battery — 42.86% more. 100 h vs 70 h.
- ▲Weight — 15.00 g less. 60 vs 75.
- ▲Buttons — 1.00 more. 6 vs 5.
Why BenQ - EC3-CW wins
- No decisive advantages.
Spec comparison
Sensor
| Spec | Corsair - M75 Air Wireless | BenQ - EC3-CW |
|---|---|---|
| Max DPI | 26000lead | 3200 |
| Max IPS | 650 | 650 |
| Polling rate | 2000 Hzlead | 1000 Hz |
Design
| Spec | Corsair - M75 Air Wireless | BenQ - EC3-CW |
|---|---|---|
| Weight | 60 glead | 75 g |
| Buttons | 6lead | 5 |
| Shape | Symmetrical | Right-handed |
Connectivity
| Spec | Corsair - M75 Air Wireless | BenQ - EC3-CW |
|---|---|---|
| Wireless | true | true |
| Battery | 100 hlead | 70 h |