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  • Corsair RMx Series RM850x 850 Watt 80 PLUS Gold Fully Modular ATX Power Supply (CP-9020180-NA) | New
Corsair RMx Series RM850x 850 Watt 80 PLUS Gold Fully Modular ATX Power Supply (CP-9020180-NA) | New

Corsair RMx Series RM850x 850 Watt 80 PLUS Gold Fully Modular ATX Power Supply (CP-9020180-NA) | New

SKU: CP-9020180-NA-N
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Overview

Corsair CP-9020180-NA RM850x Modular PSU

 

Overview



The Corsair CP-9020180-NA RM850x Modular PSU built an efficient, high-performance computer with this 850W Corsair RMx power supply unit. Its industrial-grade Japanese capacitors ensure solid power delivery, and it's fully modular for flexible configuration. Set this 80 PLUS Gold-rated Corsair RMx power supply unit on zero fan mode for quiet operation during low and medium loads.


Features

 

850W power supply

Delivers the power needed to run your PC.

AC 100-240V input

With input 47-63Hz frequency for wide-ranging use.

ATX12V 2.4 and EPS12V 2.92 compliance

Meets industry standards.

135mm temperature controlled and rifle bearing cooling fan

Dissipates heat to help the power supply remain working at optimal temperature levels.

Zero RPM Fan Mode

Allows for the fan to remain off at low to medium loads for virtually silent operation.

Maximum safety to your critical system components

Provides overvoltage, overpower, undervoltage and short-circuit protection.

80 PLUS Gold Certification

For minimal heat, noise levels and energy consumption.

Modular cable management

Allows you to use only the cables you need.

Specifications

Corsair CP-9020180-NA RM850x Modular PSU Specifications

 

Specifications


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-Efficient80 PLUS GOLD Certified
Over Voltage Protection Yes
Input Voltage100 – 240 V
Input Frequency Range47 – 63 Hz
Input Current12A – 6A
Output+3.3V@25A, +5V@25A, +12V@70.8A, -12V@0.8A, +5VSB@3A
MTBF 100,000 hours
Dimensions6.30″ x 5.91″ x 3.39″
Max PSU Length160 mm
Weight3.66 lbs.

Frequently Asked Questions

Corsair RMx Series RM850x 850 Watt 80 PLUS Gold Fully Modular ATX Power Supply (CP-9020180-NA)
Frequently Asked Questions (FAQ's)



What’s the maximum power output?
  • It delivers 850 W of continuous power.
    • Is it 80 Plus Gold certified?
  • Yes—it’s 80 PLUS Gold certified for high efficiency.
    • Does it have Zero RPM fan mode for near-silent operation?
  • Yes, it has Zero RPM fan mode, which eliminates fan noise at low to medium loads.
    • What kind of capacitors are used inside?
  • It uses 100% Japanese 105 °C-rated capacitors for reliability.
    • Is it a fully modular power supply?
  • Yes, it features fully modular cables for cleaner builds.
    • What cooling fan does it use?
  • It has a 140 mm (or 135 mm) rifle-bearing fan, tuned to minimize noise.
    • What protections does it offer?
  • Built-in protections: OVP (Over-Voltage), UVP (Under-Voltage), OPP (Over-Power), SCP (Short-Circuit), OTP (Over-Temperature).
    • Is it compatible with multi-GPU setups?
  • Yes, it is appropriate for multi-GPU installations due to its high power delivery.
    • Which ATX/EPS versions does it support?
  • Compatible with ATX12V v2.4 and EPS12V 2.92 standards.
    • How much does it weigh?
  • Approximately 3.38 kg (≈1.66 kg in some listings).
    • How many SATA and PCIe connectors are included?
  • It includes about 10 SATA connectors and 6 PCIe (6+2-pin) connectors.
    • What is the MTBF (Mean Time Between Failures)?
  • Rated for 100,000 hours MTBF.
    • Is the unit compact enough for most cases?
  • Yes—it’s a compact 160 mm body that fits most modern PC cases.
    • Does it support Modern Standby or iCUE?
  • No, it does not support Modern Standby or iCUE integration.
    • What’s the operating input voltage range?
  • Compatible with 100–240 V AC, 47–63 Hz.
    • How do I test if the PSU is functioning without a motherboard?
  • By shorting the PS_ON (green wire) to any COM (black wire) on the 24-pin connector, the fan should spin.
    • Are the modular cables interchangeable between ports?
  • No, each modular cable has its own shape and socket; they are not interchangeable.
    • Can I test if the PSU is functioning correctly without connecting it to the motherboard?
  • Yes, conduct a simple paper-clip test by shorting the green PS_ON wire to any black COM wire on the 24-pin connector; if the fan spins, it is operational.
    • Is it safe for multi-GPU builds?
  • Yes, the RM850x provides ample power for high-end, multi-GPU configurations.
    • What is the max output current for the –12 V rail?
  • The –12 V rail maxes out at 0.8 A, used for legacy devices.
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