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Rectangular black ATX power supply with modular cable sockets and a 135mm fan grille

Corsair

Corsair CP-9020093-NA RM850X 850W 80 PLUS GOLD Full Modular power supply

SKU CH-P81E-C5MWZ MPN CP-9020093-NA

Full-modular 850 W ATX unit with 80 PLUS Gold efficiency and a 135 mm Rifle Bearing fan

  • TypeATX12V / EPS12V
  • Maximum Power850 W
  • Fans1 x 135mm Rifle Bearing Fan
  • PFCActive
  • Main Connector24Pin
  • +12V RailsSingle
  • 850 W output powers demanding multi-GPU builds
  • 80 PLUS GOLD certification delivers 90% efficiency at typical loads
  • Full modular cabling keeps the case interior tidy
  • 135 mm Rifle Bearing fan enables ZeroRPM silent operation at low load
  • Single +12 V rail rated at 70.8 A ensures stable power delivery

850W Fully Modular ATX Power Supply

The Corsair RM850X delivers 850 W through a single +12V rail rated at 70.8 A. It carries 80 PLUS Gold certification for 90% efficiency and uses a fully modular cable set so only the required leads are installed. A 135 mm rifle-bearing fan supports ZeroRPM mode for silent running at low loads.

Suits Multi-GPU Builds; Avoid for Low-Power Systems

Six 6+2-pin PCIe connectors and two EPS cables make the unit ready for SLI or CrossFire configurations. Ten SATA and eight peripheral plugs cover large storage arrays. Builds that only need a fraction of this output should consider a lower-wattage model instead.

Single +12V Rail at 70.8 A Decides Fit

The entire 850 W is available on one +12V rail, simplifying power distribution for high-end graphics cards and CPUs. Verify that the combined 12 V demand of your components stays within 70.8 A before choosing this unit.

Points forts

  • 850 W output powers demanding multi-GPU builds
  • 80 PLUS GOLD certification delivers 90% efficiency at typical loads
  • Full modular cabling keeps the case interior tidy
  • 135 mm Rifle Bearing fan enables ZeroRPM silent operation at low load
  • Single +12 V rail rated at 70.8 A ensures stable power delivery

Caractéristiques

BrandCORSAIR
SeriesRMx Series
ModelRM850X (CP-9020093-NA)
TypeATX12V / EPS12V
Maximum Power850 W
Fans1 x 135mm Rifle Bearing Fan
PFCActive
Main Connector24Pin
+12V RailsSingle
PCI-Express Connector6 x 6+2-Pin
SATA Power Connector10
SLISLI Ready
Haswell SupportYes
CrossFireCrossFire Ready
ModularFull Modular
Efficiency90%
Energy-Efficient80 PLUS GOLD Certified
Over Voltage ProtectionYes
Input Voltage100 - 240 V
Input Frequency Range47 - 63 Hz
Input Current12 - 6A
Output+3.3V @ 25A, +5V @ 25A, +12V @ 70.8A, -12V @ 0.8A, +5VSB @ 3A
MTBF100,000 Hours
ApprovalsFCC, ICES, CE, UL / CUL, CSA, C-Tick / RCM, TUV, CB, CU, KC Mark, RoHS, WEEE, RoHS (China), REACH
Connectors1 x ATX Connector
2 x EPS Connector
1 x Floppy Connector
8 x 4-Pin Peripheral Connector
6 x PCI-E Connector
10 x SATA Connector
Features80 PLUS Gold efficiency, delivering 90% energy efficiency at real world load conditions
ZeroRPM mode for fanless operation at low loads and outstanding noise reduction
135mm thermally controlled fan spins up as needed
Fully modular cables for easy installation, less clutter, and helps maximize airflow through your computer's chassis
Engineered to meet maximum power output at a server-grade 50 degrees centigrade temperature rating
Over-voltage protection, under-voltage protection, short circuit protection, over power protection, and over temperature protection provide maximum safety t
Dimensions3.39" x 7.09" x 5.91"
Weight4.38 lbs.
Poids d’expédition3.96 kg
Dimensions du colis394 × 226 × 150 mm

Questions sur cet article

Will this PSU fit a standard ATX case and provide enough connectors for a dual-GPU build?

The unit follows the ATX12V / EPS12V form factor and includes six 6+2-pin PCIe connectors, supporting SLI and CrossFire multi-GPU configurations.

Can I run it silently during light workloads?

ZeroRPM mode stops the 135mm rifle-bearing fan at low loads for fanless operation.

What AC input range does it accept for worldwide use?

It operates on 100 - 240 V at 47 - 63 Hz without a voltage switch.

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