Between the G915 X TKL and MX Keys S, the G915 X TKL comes out ahead in several specs, while the MX Keys S wins on size. Overall, the G915 X TKL scores 44.3 and the MX Keys S scores 44.3 on our Mars Score.
Which should you buy?
These two are evenly matched on the broad strokes, with the decision sitting on which individual spec advantages weigh more for your use.
The G915 X TKL doesn't pull ahead on any single popular-comparison spec — its strengths sit in the spec table groups rather than the headline advantages.
Pick the MX Keys S if you care most about size. Its strongest claims are size.
Both ship with comparable hot-swappable, wireless, polling rate, so those specs don't 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 tells you both are well-rounded; the differences are about trade-offs, not quality.
Why Logitech - G915 X TKL wins
- No decisive advantages.
Why Logitech - MX Keys S wins
- ▲Size: Full (vs TKL).
Spec comparison
Switches
| Spec | Logitech - G915 X TKL | Logitech - MX Keys S |
|---|---|---|
| Switch type | GL Mechanical | Scissor |
| Hot-swappable | false | false |
Layout & Build
| Spec | Logitech - G915 X TKL | Logitech - MX Keys S |
|---|---|---|
| Size | TKL | Fulllead |
| RGB | truelead | false |
| Rotary knob | false | false |
| Case material | Aluminum | Plastic |
Connectivity
| Spec | Logitech - G915 X TKL | Logitech - MX Keys S |
|---|---|---|
| Wireless | true | true |
| 2.4 GHz | truelead | false |
| Battery | 40 h | 240 hlead |
| Polling rate | 1000 Hz | 1000 Hz |
Frequently asked
Spec-level deep dives
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