Between the RM850e (2023) and SF1000L, the RM850e (2023) comes out ahead in several specs, while the SF1000L wins on wattage. Overall, the RM850e (2023) scores 61.1 and the SF1000L scores 68.3 on our Mars Score.
Which should you buy?
The SF1000L edges ahead on the Mars Score (61.1 vs 68.3), but the 7.2-point gap is small enough that the right pick comes down to which spec advantages matter to you.
The RM850e (2023) 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 SF1000L if you care most about wattage. Its strongest claims are wattage.
Both ship with comparable efficiency, modular, atx 3.0 / 12vhpwr, so those specs don't separate the two — focus on the differences below.
Bottom line: the SF1000L 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
- No decisive advantages.
Why Corsair - SF1000L wins
- ▲Wattage — 17.65% more. 1000 W vs 850 W.
Spec comparison
Spec
| Spec | Corsair - RM850e (2023) | Corsair - SF1000L |
|---|---|---|
| Wattage | 850 W | 1000 Wlead |
| Efficiency | 80+ Gold | 80+ Gold |
| Form factor | ATX | SFX-Llead |
Features
| Spec | Corsair - RM850e (2023) | Corsair - SF1000L |
|---|---|---|
| Modular | full | full |
| ATX 3.0 / 12VHPWR | true | true |
| Warranty | 7 yrs | 7 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.