Corsair RMx Series RM850x ATX 3.1 Fully Modular Power Supply Black 850 Watts PCIe 5.1 Cybenetics Gold
CORSAIR RMx Series RM850x ATX Power Supply - Fully Modular - ATX 3.1 - PCIe 5.1 - Cybenetics Gold - Low-Noise - Japanese Capacitors - 850 Watts
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CORSAIR RMx Series RM850x ATX Power Supply - Fully Modular - ATX 3.1 - PCIe 5.1 - Cybenetics Gold - Low-Noise - Japanese Capacitors - 850 Watts

|24 ratings

Key item features

  • Fully Modular Design: Allows for easy installation and cable management, reducing clutter and improving airflow within the case.
  • Cybenetics Gold Certification: Ensures high efficiency and reliable performance, meeting stringent energy efficiency standards.
  • ATX 3.1 Compliance: Compatible with the latest ATX 3.1 specifications, ensuring broad compatibility with modern motherboards and components.
  • PCIe 5.1 Support: Equipped to handle the latest PCIe 5.1 devices, providing future-proofing for upcoming hardware upgrades.
  • Japanese Capacitors: Features 100% Japanese 105C-rated electrolytic capacitors for enhanced durability and reliability.
  • Low-Noise Operation: Includes a 140mm FDB fan with a zero RPM mode for silent operation during low loads.
  • Flexible Cables: Comes with ultra-flexible embossed cables and low-profile combs for easy routing and a clean build.
  • Temperature Resilience: Capable of operating at temperatures up to 50C, ensuring stability under heavy loads.
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Specs

Maximum watts out, 850 WattsComputer power supply form factor, InternalFeatures, Full ModularBrand, CorsairInput voltage, 120 VSize, One Size

About this item

Product details

CORSAIR RMx Series RM850x ATX Power Supply - Fully Modular - ATX 3.1 - PCIe 5.1 - Cybenetics Gold - Low-Noise - Japanese Capacitors - 850 Watts
  • Fully modular
  • Cybenetics Gold-certified
  • ATX 3.1 Compliant
  • Supports PCIe 5.1
  • Native 12V-2x6 connector
  • Ultra-flexible embossed cables with low-profile combs
  • Fan speed adjustment knob
  • 100% Japanese 105°C-rated electrolytic capacitors
  • 50°C Maximum operating temperature
  • Low-noise 140mm FDB fan
  • Zero RPM fan mode
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.  

Specifications

Maximum watts out

850 Watts

Computer power supply form factor

Internal

Features

Full Modular

Brand

Corsair

Warranty

Warranty information

Limited Warranty period (parts): 3650 days Limited Warranty period (labor): 3650 days

Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.

Warnings

Customer ratings & reviews

5 out of 5 stars
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24 ratings14 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars96% (23)
  2. 4 stars4% (1)
  3. 3 stars0% (0)
  4. 2 stars0% (0)
  5. 1 star0% (0)
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Showing 1-3 of 14 reviews

Jan 5, 2026
Reviewer name: PATRICK
Sold and shipped byNewegg Inc.
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Fast delivery

Fast delivery

Incentivized Review
Helpful?4EO5ZT3WX57D12865812424
Sep 2, 2026
Reviewer name: NyxT
5 out of 5 stars
5 out of 5 stars review

Seller Verified Purchase

Works great, easy install.

Works great. Easy install. It's one of those products you can't write much about .... It works great for what I needed.

Review from CORSAIR
Helpful?4EO5ZT3WX57D12865812424
Aug 31, 2026
Reviewer name: Norn
5 out of 5 stars
5 out of 5 stars review

Seller Verified Purchase

Awesome Replacement for a Failing Power Supply!

I bought this a few months ago after my power supply gave up on my HP Omen 45L. I'm glad I found this one! I haven't had any problems since and I'm really happy that it has a good warranty (unlike my first power supply), which will probably last the rest of my computers life. Very happy with my purchase.

Review from CORSAIR
Helpful?4EO5ZT3WX57D12865812424
Current price is $139.99
Price when purchased online
  • Free shipping
  • Free Holiday returns until Jan 31
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Sold and shipped by Newegg Inc.
4.605111294311624 out of 5 stars
4.6 stars out of 5, based on 7279 seller reviews(4.6)
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