CORSAIR RMx Series RM850x CP-9020180-NA 850W ATX12V / EPS12V 80 PLUS GOLD Certified Full Modular Power Supply


  • 80 PLUS Gold certified for lower power consumption, less noise and cooler temperatures.
  • Tuned for low noise operation even at full load.
  • Zero RPM fan mode for near-silent operation at low to medium loads.
  • 100% industrial-grade, 105°C rated Japanese capacitors ensure unwavering power and reliability.
  • Fully modular cables, so you only connect the cables your system needs.
  • Compact 160mm size for easier builds. (RM550x, RM650x, RM750x, RM850x)
  • Compact 180mm size for easier builds, (RM1000x)
  • Ten-year warranty for complete peace of mind.


Series RMx Series RM850x
Model CP-9020180-NA
Type ATX12V / EPS12V
Maximum Power  850W
Fans  1 x 135mm Low Noise Fan
Main Connector  20+4Pin
+12V Rails  Single
PCI-Express Connector  6 x 6+2-Pin
SATA Power Connector  10
Modular  Full Modular
Energy-Efficient 80 PLUS GOLD Certified
Over Voltage Protection  Yes
Input Voltage 100 – 240 V
Input Frequency Range 47 – 63 Hz
Input Current 12A – 6A
Output +3.3V@25A, +5V@25A, +12V@70.8A, -12V@0.8A, +5VSB@3A
MTBF  100,000 hours
Dimensions 6.30″ x 5.91″ x 3.39″
Max PSU Length 160 mm
Weight 3.66 lbs.
Connectors 1 x ATX 24-PIN (20+4)
2 x EPS/ATX12V 8-PIN (4+4)
6 x PCIe 8-PIN (6+2)
10 x SATA (3 SATA)
Features 80 PLUS Gold Certified: High efficiency operation for lower power consumption, less noise and cooler temperatures.

Tuned for Low Noise Operation: A specially set fan curve ensures that, even at full load, fan noise is kept to a minimum.

Zero RPM Fan Mode: At low and medium loads the cooling fan switches off entirely for near-silent operation.

100% All Japanese 105°C Capacitors: Premium internal components ensure unwavering power delivery and long-term reliability.

Fully Modular Cables: Only connect the cables your system needs, making clean and tidy builds easier.

Compact Size: A 160mm-long casing ensures an easy fit in almost all modern enthusiast PC cases.

Ten-Year Warranty: Your guarantee of reliable operation that will last across several system builds.

Package Content RMx Series ATX Power Supply
Power cord
Mounting screws
Cable ties
Corsair case badge
User manual