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  • CORSAIR RM850x 850W 80 Plus Gold Fully Modular ATX Power Supply - Black (CP-9020270-NA) | New
CORSAIR RM850x 850W 80 Plus Gold Fully Modular ATX Power Supply - Black (CP-9020270-NA) | New

CORSAIR RM850x 850W 80 Plus Gold Fully Modular ATX Power Supply - Black (CP-9020270-NA) | New

SKU: CP-9020270-NA-N
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What's in the Box ?

🗹 RM850x Power Supply
🗹 Modular DC Cable Kit
🗹 Power Cord
🗹 Mounting Screws
🗹 Cable Ties
🗹 User Manual

Same Day Shipping - Arrives in 3-5 Business Days
30-day Returns

All orders will ship on January 5, 2026

$121.99 $121.99
Available Quantity:
For immediate assistance call our support team at 973-808-4588. For additional information, send an email to website@telquestintl.com.

Overview

Overview of CORSAIR RM850x 850W 80 Plus Gold Fully Modular ATX Power Supply - Black (CP-9020270-NA) | New

The CORSAIR RM850x 850W 80 Plus Gold Fully Modular ATX Power Supply - Black (CP-9020270-NA) supplies the power for the most demanding workstations and gaming PCs. Exceptional electrical performance and 80 PLUS Gold efficiency are provided by this next-generation PSU, keeping your system energy-efficient, silent and cool. Designed for enthusiasts, it has a 140mm magnetic levitation fan, high-quality 100% Japanese 105°C capacitors and a completely modular design with low-profile wires. With its next-generation 12V-2x6 (PCIe 5.0) connector, the RM850x is ready for both ATX 3.1 and PCIe 5.0, providing clean, dependable power for high-end systems, new GPUs and CPUs.


Key Features of CORSAIR RM850x 850W 80 Plus Gold Fully Modular ATX Power Supply


• 850W Continuous Output handles top-tier CPUs and multi-GPU configurations with room for future upgrades.

• 80 PLUS Gold Certified delivers over 87%-90% efficiency, reducing energy loss, heat and utility bills.

• Fully Modular Cables connect only what you need for a clean, tidy and optimized case airflow.

• ATX 3.1 & PCIe 5.0 Ready that native 12V-2x6 cable supports the latest graphics cards, future-proofing your system.

• 100% Japanese 105°C Capacitors ensures maximum reliability and stable power delivery, even at high temperatures.

• 140mm Magnetic Levitation Fan runs ultra-quiet, with smart Zero RPM mode at low and medium loads for silent operation.

• Robust Protections that includes OVP, UVP, OPP, SCP, OTP and inrush/surge protection for your valuable components.

• Compact 160mm Length fits most ATX cases, making cable management simple and installation hassle-free.

• Multi-GPU Ready that multiple EPS and PCIe connectors power up modern gaming rigs and creative workstations.

• Confidence and reliability that last through many PC builds and upgrades.


Benefits of CORSAIR RM850x 850W 80 Plus Gold Fully Modular ATX Power Supply


🗹 Whisper-quiet operation that advanced cooling and smart fan controls ensure a silent system even under heavy load, perfect for home or office.

🗹 Ultimate compatibility & future-proofing that native PCIe 5.0 connectors and ATX 3.1 support ensure smooth upgrades with the latest components.

🗹 Rock-solid reliability with premium Japanese capacitors and robust protections safeguard every investment in high-performance hardware.

🗹 Simplified, clean builds that fully modular cables and a compact design make cable routing fast, neat and flexible for any custom case setup.

🗹 Energy savings that 80 PLUS Gold efficiency means less wasted power, lower costs and reduced environmental impact for green builders.

🗹 Zero hassle and enjoy up to a decade of worry-free operation and expert support from Corsair.

Specifications

Specifications for CORSAIR RM850x 850W 80 Plus Gold Fully Modular ATX Power Supply - Black (CP-9020270-NA) | New

ManufacturerCisco
Manufacturer Part NumberCP-9020270-NA
Product NameCORSAIR RM850x 850W 80 Plus Gold Fully Modular ATX Power Supply - Black
Product TypeSwitch
Specification Compliance
ATX12V 3.1/ EPS12V
PSU Form Factor
ATX
Localization
North America
Input Voltage
AC 100-240 V
Frequency Required
47 - 63 Hz
Power Output Connectors Details
1 x power 24 pin ATX ¦ 2 x power 8 pin EPS12V with detachable 4 pin ATX12V section ¦ 3 x 8 pin PCI Express power with detachable 2 pin section ¦ 8 x 15 pin Serial ATA power ¦ 3 x 4 pin internal power ¦ 1 x 16 pin PCI Express power
Output Voltage
+3.3, ±5, +12 V
Power Capacity
850 Watt
Output Current
+3.3V - 20 A ¦ +5V - 20 A ¦ +12V - 70.8 A ¦ +5VSB - 3 A
Modular Cable Management
Yes
Cybenetics Certification
Cybenetics Gold
Cables Included
AC power cable ¦ Power 24 pin ATX with detachable 4 pin section modular cable 2 ft ¦ 2 x power 8 pin EPS12V modular cable 2.5 ft ¦ 3 x 8 pin PCI Express power with detachable 2 pin section 2 ft ¦ 16-pin 12VHPWR power modular cable 2 ft ¦ 2 x 15 pin Serial ATA power modular cable 2.8 ft ¦ 4 pin power modular cable 2.5 ft
MTBF
100,000 hours
Cooling System
140 mm fan
Features
Zero RPM fan mode, manual fan speed control, fully modular, Cybenetics A, Modern Standby compatible
Compliant Standards
UKCA, RoHS
Width
5.9 in
Depth
6.3 in
Height
3.4 in

Frequently Asked Questions

CORSAIR RM850x 850W 80 Plus Gold Fully Modular ATX Power Supply (CP-9020270-NA)
Frequently Asked Questions (FAQ's)



Is the RM850x compatible with the RTX 4080/4090?
  • Yes, it includes multiple PCIe 8-pin connectors compatible with high-end GPUs like the RTX 4080 and 4090.
    • Does it support ATX 3.0 or PCIe 5.0 standards?
  • This model supports PCIe 4.0; for native ATX 3.0 support, consider the RM850x SHIFT or newer models.
    • What type of cooling fan is used?
  • It uses a 135mm Magnetic Levitation (MagLev) fan for quiet, long-lasting cooling.
    • Can I install this PSU in a mid-tower case?
  • Yes, its compact 160mm form factor fits comfortably in most ATX mid and full tower cases.
    • Is the fan always running?
  • No, Zero RPM mode keeps the fan off at lower loads for silent operation.
    • How many PCIe power connectors are included?
  • It includes six 8-pin (6+2) PCIe connectors for graphics cards.
    • What protections are built-in?
  • Over-voltage, under-voltage, short-circuit, over-power and over-temperature protection are all included.
    • Does it include sleeved or flat cables?
  • The RM850x comes with flexible flat black modular cables for easy cable management.
    • Can I use this PSU for overclocking?
  • Absolutely. Its stable power delivery and high capacity make it suitable for CPU and GPU overclocking.
    • Is it compatible with AMD and Intel platforms?
  • Yes, it works with all current and upcoming AMD and Intel motherboard standards.
    • How quiet is this PSU under load?
  • Even under heavy load, the MagLev fan remains whisper-quiet thanks to its dynamic control system.
    • Does it include a power cord?
  • Yes, a standard AC power cable is included in the box.
    • Is there support for dual CPU motherboards?
  • It includes multiple EPS connectors, which are compatible with dual CPU workstation motherboards.
    • Can it be mounted fan up or down?
  • Yes, orientation is flexible based on your case design and airflow setup.
    • Does it come with a carrying bag for unused cables?
  • Yes, CORSAIR includes a branded pouch to store unused modular cables.
    • What material is the PSU casing made from?
  • It features a durable, matte black steel housing with high-quality finishes.
    • Is there software monitoring support?
  • This model does not include digital monitoring; for that feature, look at CORSAIR's iCUE-enabled PSUs.
    • Can I upgrade from a 650W PSU with this?
  • Yes, it’s an ideal upgrade for systems needing more headroom for future GPU or CPU upgrades.
    • What certifications does this PSU have?
  • It carries 80+ Gold, CE, CB, TÜV and other global safety certifications.
    • Does the RM850x support high transient loads from GPUs like the RTX 3090 or 4080?
  • Yes, its robust design and high peak power handling make it well-suited for modern GPUs with transient spikes.
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