Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | NuPhy - Air75 V2 | Razer - BlackWidow V4 Pro |
|---|---|---|
| Polling rate | 1000 Hz | 8000 Hz |
| Hot-swappable | true | false |
| Rotary knob | false | true |
| Wireless | true | false |
| Size | 75% | Full |
Between the Air75 V2 and BlackWidow V4 Pro, the Air75 V2 comes out ahead in hot-swappable / wireless, while the BlackWidow V4 Pro wins on polling rate / rotary knob. Overall, the Air75 V2 scores 64.5 and the BlackWidow V4 Pro scores 73.9 on our Mars Score.
Which should you buy?
The BlackWidow V4 Pro is the clear pick on raw spec strength, leading by 9.4 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 Air75 V2 if you care most about hot-swappable / wireless. The biggest gaps in its favor are hot-swappable, wireless. The single most decisive one: Has Hot-swappable.
Pick the BlackWidow V4 Pro if you care most about polling rate / rotary knob. Its strongest claims are polling rate, rotary knob, size. The single most decisive one: Polling rate — 700.00% more. 8000 Hz vs 1000 Hz.
There are no meaningful ties on the headline specs — every popular-comparison metric has a winner.
Bottom line: the BlackWidow V4 Pro 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: NuPhy - Air75 V2 or Razer - BlackWidow V4 Pro?
Razer - BlackWidow V4 Pro leads the current Mars Score by 9.4 points.The more useful decision is the trade-off behind that result: compare size, wireless, hot-swappable against the way you will actually use the product.
Choose NuPhy - Air75 V2 if…
NuPhy - Air75 V2 has the measurable edge on is hot swap, is wireless.
Choose Razer - BlackWidow V4 Pro if…
Razer - BlackWidow V4 Pro has the measurable edge on polling rate hz, has knob, size.
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 NuPhy - Air75 V2 wins
- ▲Has Hot-swappable.
- ▲Wireless: true (vs false).
Why Razer - BlackWidow V4 Pro wins
- ▲Polling rate — 700.00% more. 8000 Hz vs 1000 Hz.
- ▲Has Rotary knob.
- ▲Size: Full (vs 75%).
Spec comparison
Switches
| Spec | NuPhy - Air75 V2 | Razer - BlackWidow V4 Pro |
|---|---|---|
| Switch type | Gateron Low-profile | Razer Green |
| Hot-swappable | truelead | false |
Layout & Build
| Spec | NuPhy - Air75 V2 | Razer - BlackWidow V4 Pro |
|---|---|---|
| Size | 75% | Fulllead |
| RGB | true | true |
| Rotary knob | false | truelead |
| Case material | Aluminum + Plastic | Aluminum |
Connectivity
| Spec | NuPhy - Air75 V2 | Razer - BlackWidow V4 Pro |
|---|---|---|
| Wireless | truelead | false |
| 2.4 GHz | truelead | false |
| Battery | 120 hlead | 0 h |
| Polling rate | 1000 Hz | 8000 Hzlead |