Logitech - MX Keys S vs Logitech - MX Mechanical Mini
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Logitech - MX Keys S | Logitech - MX Mechanical Mini |
|---|---|---|
| Polling rate | 1000 Hz | 125 Hz |
| Size | Full | 75% |
Between the MX Keys S and MX Mechanical Mini, the MX Keys S comes out ahead in polling rate / size, while the MX Mechanical Mini wins on several specs. Overall, the MX Keys S scores 38.3 and the MX Mechanical Mini scores 35 on our Mars Score.
Which should you buy?
The MX Keys S edges ahead on the Mars Score (38.3 vs 35), but the 3.3-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the MX Keys S if you care most about polling rate / size. The biggest gaps in its favor are polling rate, size. The single most decisive one: Polling rate — 700.00% more. 1000 Hz vs 125 Hz.
The MX Mechanical Mini similarly does not carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable hot-swappable, wireless, rotary knob, 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: Logitech - MX Keys S or Logitech - MX Mechanical Mini?
Logitech - MX Keys S leads the current Mars Score by 3.3 points.The more useful decision is the trade-off behind that result: compare size against the way you will actually use the product.
Choose Logitech - MX Keys S if…
Logitech - MX Keys S has the measurable edge on polling rate hz, size.
Choose Logitech - MX Mechanical Mini if…
Logitech - MX Mechanical Mini 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 Logitech - MX Keys S wins
- ▲Polling rate — 700.00% more. 1000 Hz vs 125 Hz.
- ▲Size: Full (vs 75%).
Why Logitech - MX Mechanical Mini wins
- No decisive advantages.
Spec comparison
Switches
| Spec | Logitech - MX Keys S | Logitech - MX Mechanical Mini |
|---|---|---|
| Switch type | Scissor | Kailh Choc |
| Hot-swappable | false | false |
Layout & Build
| Spec | Logitech - MX Keys S | Logitech - MX Mechanical Mini |
|---|---|---|
| Size | Fulllead | 75% |
| RGB | false | false |
| Rotary knob | false | false |
| Case material | Plastic | Aluminum |
Connectivity
| Spec | Logitech - MX Keys S | Logitech - MX Mechanical Mini |
|---|---|---|
| Wireless | true | true |
| 2.4 GHz | false | false |
| Battery | 240 h | 240 h |
| Polling rate | 1000 Hzlead | 125 Hz |