Best Power Supplies · head-to-head
Corsair RM850x (2024) vs be quiet! Pure Power 12 M 850W
A sourced, side-by-side spec comparison. be quiet! Pure Power 12 M 850W is cheaper at $134.9. Every spec and price links to its source.
Side by side
| Corsair RM850x (2024) | be quiet! Pure Power 12 M 850W | |
|---|---|---|
| US price | $169.99 (MSRP, black model) | $134.9 (MSRP (USD)) |
| Brand | Corsair | be quiet! |
| Released | 2024 | 2023-02 |
| wattage w | 850 | 850 |
| efficiency rating | 80plus_gold | 80plus_gold |
| modular | full | full |
| atx version | ATX 3.1 | ATX 3.0 |
| pcie 5 12vhpwr | true | true |
| fan size mm | 140 | 120 |
| warranty years | 10 | 10 |
| release year | 2024 | 2023 |
Sources — Corsair RM850x (2024): corsair.com (verified 2026-06-19). be quiet! Pure Power 12 M 850W: bequiet.com (verified 2026-06-19).