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

Corsair

Corsair HX850 CP-9020138-NA 850 W power supply

SKU CH-BCRD-06HZG MPN CP-9020138-NA

A fully modular 850 W ATX power supply with 80 PLUS Platinum efficiency, a 135 mm fluid-dynamic-bearing fan, six PCIe 6+2-pin connectors and 16 SATA power connectors

  • TypeATX12V v2.4 / EPS12V 2.92
  • Maximum Power850 W
  • Fans1 x 135mm Fluid Dynamic Bearing Fan
  • Main Connector24Pin
  • +12V RailsSingle +12V Rail or Multi +12V Rail Mode
  • PCI-Express Connector6 x 6+2-Pin

Options ATX 80+ Platinum (850W) HX Series 135mm Fan

  • 850 W output powers demanding components with headroom
  • 80 PLUS Platinum efficiency reduces waste heat and running cost
  • Fully modular cabling keeps the build tidy and airflow clear
  • 135 mm fluid-dynamic-bearing fan with Zero RPM mode stays silent at low loads
  • Switchable single or multiple +12 V rail modes suit different protection needs

HX Series 850 W Fully Modular ATX Supply

The Corsair HX850 is an 850 W ATX12V v2.4 power supply with 80 PLUS Platinum efficiency and full modular cabling. A 135 mm fluid dynamic bearing fan provides cooling, while a +12 V rail switch lets builders choose between single and multi rail operation. The unit measures 180 mm in length and fits standard ATX cases.

Best for High End Builds Needing Platinum Efficiency

Enthusiasts who want low heat, quiet operation at light loads and cable flexibility will suit this model. Systems that only require a basic bronze or gold unit, or builds constrained to shorter PSU bays, should consider other options.

Single or Multi +12 V Rail Switch Decides Fit

The onboard switch selects one 70.8 A rail or seven 40 A rails, directly affecting over current protection behaviour for high power GPUs. Choose the mode that matches your graphics card and motherboard requirements.

Points forts

  • 850 W output powers demanding components with headroom
  • 80 PLUS Platinum efficiency reduces waste heat and running cost
  • Fully modular cabling keeps the build tidy and airflow clear
  • 135 mm fluid-dynamic-bearing fan with Zero RPM mode stays silent at low loads
  • Switchable single or multiple +12 V rail modes suit different protection needs

Caractéristiques

BrandCORSAIR
SeriesHX Series HX850
ModelCP-9020138-NA
TypeATX12V v2.4 / EPS12V 2.92
Maximum Power850 W
Fans1 x 135mm Fluid Dynamic Bearing Fan
Main Connector24Pin
+12V RailsSingle +12V Rail or Multi +12V Rail Mode
PCI-Express Connector6 x 6+2-Pin
SATA Power Connector16
Haswell SupportYes
Max PSU Length180 mm
ModularFull Modular
Energy-Efficient80 PLUS PLATINUM Certified
Over Voltage ProtectionYes
Input Voltage100 - 240 V
Input Frequency Range47 - 63 Hz
Input Current12 - 6 A
OutputSingle +12V Rail Mode:
+3.3V @ 25A, +5V @ 25A, +12V @ 70.8A, -12V @ 0.8A, +5VSB @ 3A
Multiple +12V Rail Mode:
+3.3V @ 25A, +5V @ 25A, +12V1 @ 40A, +12V2 @ 40A, +12V3 @ 40A, +12V4 @ 40A, +12V5 @ 40A, +12V6 @ 40A, +12V7 @ 40A, -12V @ 0.8A, +5VSB @ 3A
MTBF100,000 Hours
ApprovalsFCC, ICES, CE, UL, cUL, RCM, TÜV, CB, CCC, BSMI, EAC, RoHS, WEEE, KC
Connectors1 x 24-pin ATX Cable
2 x EPS12V/ATX12V Cable (4+4)
3 x 2 x PCIe Cable (6+2)
4 x 4 x SATA Cable (4 Connectors)
2 x 3 x PATA Cable (3 connectors)
1 x Floppy Adapter (4-Pin)
FeaturesActive PFC with full range AC input (100 - 240 VAC)
135mm fluid dynamic bearing fan with Zero RPM mode
Engineered to meet maximum power output at a 50 degree C temperature rating.
Compatible with the latest ATX12V v2.4 and EPS 2.92 standards and is backward compatible with ATX12V 2.2, 2.31 and older systems.
Over-voltage protection, under-voltage protection, short circuit protection, over power protection, and over temperature protection provide maximum safety to your critical system components.
Dimensions3.39" x 5.91" x 7.09"
Weight4.30 lbs.
Package ContentHX Series ATX Power Supply
Power cord
Mounting screws
Cable ties
Corsair case badge
User manual
Poids d’expédition3.98 kg
Dimensions du colis396 × 226 × 152 mm

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Questions sur cet article

How do I confirm the fan is operating in zero-RPM mode at low load?

The 135 mm fluid-dynamic-bearing fan stops spinning entirely below the zero-RPM threshold; you will hear no fan noise while the system draws light power.

Which cables come pre-attached and which must be connected from the modular set?

No cables are permanently attached; the box includes the full modular cable kit with a 24-pin ATX, six 6+2-pin PCIe and sixteen SATA connectors.

Should I run the +12 V rail switch in single-rail or multi-rail mode for a build with three graphics cards?

Single-rail mode delivers the full 70.8 A on one +12 V rail, which is simpler for multi-GPU setups; multi-rail splits current across up to seven 40 A rails for added per-rail protection.

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