Between the FOCUS GX-850 and FOCUS PX-650, the FOCUS GX-850 comes out ahead in wattage and atx 3.0 / 12vhpwr, while the FOCUS PX-650 wins on efficiency. Overall, the FOCUS GX-850 scores 61.1 and the FOCUS PX-650 scores 50.8 on our Mars Score.
Which should you buy?
The FOCUS GX-850 is the clear pick on raw spec strength, leading by 10.3 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 FOCUS GX-850 if you care most about wattage and atx 3.0 / 12vhpwr. The biggest gaps in its favor are wattage, atx 3.0 / 12vhpwr.
Pick the FOCUS PX-650 if you care most about efficiency. Its strongest claims are efficiency.
Both ship with comparable modular, warranty, so those specs don't separate the two — focus on the differences below.
Bottom line: the FOCUS GX-850 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Seasonic - FOCUS GX-850 wins
- ▲Wattage — 30.77% more. 850 W vs 650 W.
- ▲Has ATX 3.0 / 12VHPWR.
Why Seasonic - FOCUS PX-650 wins
- ▲Efficiency: 80+ Platinum (vs 80+ Gold).
Spec comparison
Spec
| Spec | Seasonic - FOCUS GX-850 | Seasonic - FOCUS PX-650 |
|---|---|---|
| Wattage | 850 Wlead | 650 W |
| Efficiency | 80+ Gold | 80+ Platinumlead |
| Form factor | ATX | ATX |
Features
| Spec | Seasonic - FOCUS GX-850 | Seasonic - FOCUS PX-650 |
|---|---|---|
| Modular | full | full |
| ATX 3.0 / 12VHPWR | truelead | false |
| Warranty | 10 yrs | 10 yrs |
Frequently asked
Spec-level deep dives
More from the same brands
vsMars is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. Learn more.