Between the RM850e (2023) and FOCUS PX-650, the RM850e (2023) comes out ahead in wattage and atx 3.0 / 12vhpwr, while the FOCUS PX-650 wins on warranty and efficiency. Overall, the RM850e (2023) scores 61.1 and the FOCUS PX-650 scores 50.8 on our Mars Score.
Which should you buy?
The RM850e (2023) 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 RM850e (2023) 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 warranty and efficiency. Its strongest claims are warranty, efficiency.
Both ship with comparable modular, so those specs don't separate the two — focus on the differences below.
Bottom line: the RM850e (2023) is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Corsair - RM850e (2023) wins
- ▲Wattage — 30.77% more. 850 W vs 650 W.
- ▲Has ATX 3.0 / 12VHPWR.
Why Seasonic - FOCUS PX-650 wins
- ▲Warranty — 3.00 yrs more. 10 vs 7.
- ▲Efficiency: 80+ Platinum (vs 80+ Gold).
Spec comparison
Spec
| Spec | Corsair - RM850e (2023) | Seasonic - FOCUS PX-650 |
|---|---|---|
| Wattage | 850 Wlead | 650 W |
| Efficiency | 80+ Gold | 80+ Platinumlead |
| Form factor | ATX | ATX |
Features
| Spec | Corsair - RM850e (2023) | Seasonic - FOCUS PX-650 |
|---|---|---|
| Modular | full | full |
| ATX 3.0 / 12VHPWR | truelead | false |
| Warranty | 7 yrs | 10 yrslead |
Frequently asked
Spec-level deep dives
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