be quiet! - Pure Power 12 M 850W vs Corsair - RM850e (2023)

These two are evenly matched on the broad strokes, with the decision sitting on which individual spec advantages weigh more for your use.

Pick the Pure Power 12 M 850W if you care most about warranty. The biggest gaps in its favor are warranty.

The RM850e (2023) similarly doesn't carry a headline advantage on the popular specs — look at the full table for category-specific deltas.

Both ship with comparable wattage, efficiency, modular, so those specs don't separate the two — focus on the differences below.

Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity tells you both are well-rounded; the differences are about trade-offs, not quality.