be quiet! Pure Power 12 M 650W vs Corsair RM850x Shift (2025)
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Key differences
- •Corsair RM850x Shift (2025) has higher SATA connectors (8 vs 6)
- •Corsair RM850x Shift (2025) has higher Wattage (850 W vs 650 W)
- •be quiet! Pure Power 12 M 650W has lower PSU length (140 mm vs 160 mm)
Full spec comparison
Spec
be quiet! Pure Power 12 M 650W
Corsair RM850x Shift (2025)
Power
Wattage650 W850 W▲
Efficiency rating80 Plus Gold80 Plus Gold
ATX versionATX 3.0ATX 3.1
Modular cablingFully modularFully modular
Form factorATXATX
12V rail designSingle +12VSingle 12V
Connectors & Build
PCIe / GPU connectors1× 12VHPWR + 2× 8-pin1× 12V-2x6, 3× 8-pin
CPU power connectors2× 8-pin2× 8-pin
SATA connectors68▲
Fan size120 mm140 mm
PSU length140 mm▲160 mm
Zero-RPM fan modeYesYes
Warranty10 years10 years