Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Glorious - GMMK 3 Pro | Logitech - G915 X TKL |
|---|---|---|
| Polling rate | 8000 Hz | 1000 Hz |
| Hot-swappable | true | false |
| Rotary knob | true | false |
| Size | 75% | TKL |
Between the GMMK 3 Pro and G915 X TKL, the GMMK 3 Pro comes out ahead in polling rate / hot-swappable, while the G915 X TKL wins on size. Overall, the GMMK 3 Pro scores 95 and the G915 X TKL scores 38.3 on our Mars Score.
Which should you buy?
The GMMK 3 Pro is the clear pick on raw spec strength, leading by 56.7 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 GMMK 3 Pro if you care most about polling rate / hot-swappable. The biggest gaps in its favor are polling rate, hot-swappable, rotary knob. The single most decisive one: Polling rate — 700.00% more. 8000 Hz vs 1000 Hz.
Pick the G915 X TKL if you care most about size. Its strongest claims are size. The single most decisive one: Size: TKL (vs 75%).
Both ship with comparable wireless, so those specs do not separate the two — focus on the differences below.
Bottom line: the GMMK 3 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: Glorious - GMMK 3 Pro or Logitech - G915 X TKL?
Glorious - GMMK 3 Pro leads the current Mars Score by 56.7 points.The more useful decision is the trade-off behind that result: compare size, hot-swappable against the way you will actually use the product.
Choose Glorious - GMMK 3 Pro if…
Glorious - GMMK 3 Pro has the measurable edge on polling rate hz, is hot swap, has knob.
Choose Logitech - G915 X TKL if…
Logitech - G915 X TKL has the measurable edge on 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 Glorious - GMMK 3 Pro wins
- ▲Polling rate — 700.00% more. 8000 Hz vs 1000 Hz.
- ▲Has Hot-swappable.
- ▲Has Rotary knob.
Why Logitech - G915 X TKL wins
- ▲Size: TKL (vs 75%).
Spec comparison
Switches
| Spec | Glorious - GMMK 3 Pro | Logitech - G915 X TKL |
|---|---|---|
| Switch type | Glorious Fox | GL Mechanical |
| Hot-swappable | truelead | false |
Layout & Build
| Spec | Glorious - GMMK 3 Pro | Logitech - G915 X TKL |
|---|---|---|
| Size | 75% | TKLlead |
| RGB | true | true |
| Rotary knob | truelead | false |
| Case material | Aluminum | Aluminum |
Connectivity
| Spec | Glorious - GMMK 3 Pro | Logitech - G915 X TKL |
|---|---|---|
| Wireless | true | true |
| 2.4 GHz | true | true |
| Battery | 150 hlead | 40 h |
| Polling rate | 8000 Hzlead | 1000 Hz |