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Corsair · Power Supply

Corsair RM850x (2024)

The Corsair RM850x (2024) is a high-quality 850W 80+ Gold fully modular ATX 3.0 compatible power supply, offering reliable and efficient power delivery for modern PC builds.

MSRP
$149

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Best for

  • High-end gaming PCs (e.g., RTX 4070 Ti Super / RX 7900 XT and above)
  • Workstations with powerful CPUs and GPUs
  • Future-proofing for next-gen components
  • Quiet PC builds

Strengths

  • + ATX 3.0 and PCIe 5.0 (12VHPWR) native support
  • + Excellent voltage regulation and ripple suppression
  • + Quiet operation due to Zero RPM fan mode
  • + Long 10-year warranty

Trade-offs

  • 80+ Gold efficiency, not Platinum or Titanium
  • Higher price point compared to some non-ATX 3.0 850W PSUs

Should you buy it?

Buy this PSU if you need a reliable, quiet, and future-proof 850W power supply with native ATX 3.0 support for a high-end build. Consider alternatives if you prioritize higher efficiency (Platinum/Titanium) or are on a tighter budget and don't require ATX 3.0 compatibility immediately.

Specifications

Wattage
850W
Efficiency
80+ Gold
Form factor
ATX
Length
160mm

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