Between the G309 Lightspeed and G502 X PLUS, the G309 Lightspeed comes out ahead in battery and weight, while the G502 X PLUS wins on buttons. Overall, the G309 Lightspeed scores 68.2 and the G502 X PLUS scores 58.4 on our Mars Score.
Which should you buy?
The G309 Lightspeed is the clear pick on raw spec strength, leading by 9.8 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 G309 Lightspeed if you carry the device everywhere and weight or thickness has been the deciding factor before. The biggest gaps in its favor are battery, weight.
Pick the G502 X PLUS if you care most about buttons. Its strongest claims are buttons.
Both ship with comparable max dpi, polling rate, wireless, so those specs don't separate the two — focus on the differences below.
Bottom line: the G309 Lightspeed is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Logitech - G309 Lightspeed wins
- ▲Battery — 150.00% more. 300 h vs 120 h.
- ▲Weight — 38.00 g less. 68 vs 106.
Why Logitech - G502 X PLUS wins
- ▲Buttons — 7.00 more. 13 vs 6.
Spec comparison
Sensor
| Spec | Logitech - G309 Lightspeed | Logitech - G502 X PLUS |
|---|---|---|
| Max DPI | 25600 | 25600 |
| Max IPS | 400 | 400 |
| Polling rate | 1000 Hz | 1000 Hz |
Design
| Spec | Logitech - G309 Lightspeed | Logitech - G502 X PLUS |
|---|---|---|
| Weight | 68 glead | 106 g |
| Buttons | 6 | 13lead |
| Shape | Right-handed | Right-handed |
Connectivity
| Spec | Logitech - G309 Lightspeed | Logitech - G502 X PLUS |
|---|---|---|
| Wireless | true | true |
| Battery | 300 hlead | 120 h |
Frequently asked
Spec-level deep dives
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