be quiet! - Pure Power 12 M 850W vs Corsair - SF1000L
Between the Pure Power 12 M 850W and SF1000L, the Pure Power 12 M 850W comes out ahead in warranty, while the SF1000L wins on wattage. Overall, the Pure Power 12 M 850W 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.
Pick the Pure Power 12 M 850W if you care most about warranty. The biggest gaps in its favor are warranty.
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 do not 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 be quiet! - Pure Power 12 M 850W wins
- ▲Warranty — 3.00 yrs more. 10 vs 7.
Why Corsair - SF1000L wins
- ▲Wattage — 17.65% more. 1000 W vs 850 W.
Spec comparison
Spec
| Spec | be quiet! - Pure Power 12 M 850W | Corsair - SF1000L |
|---|---|---|
| Wattage | 850 W | 1000 Wlead |
| Efficiency | 80+ Gold | 80+ Gold |
| Form factor | ATX | SFX-Llead |
Features
| Spec | be quiet! - Pure Power 12 M 850W | Corsair - SF1000L |
|---|---|---|
| Modular | full | full |
| ATX 3.0 / 12VHPWR | true | true |
| Warranty | 10 yrslead | 7 yrs |
Spec-level deep dives
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