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Corsair

CORSAIR RM850e (2025) Fully Modular Low-Noise ATX Power Supply with 12V-2x6 Cable – ATX 3.1 & PCIe 5.1 Compliant, Cybenetics Gold Efficiency, 105°C-Rated Capacitors, Modern Standby Mode – Black

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Style: RMe (2025) ATX 3.1, PCIe 5.1


Size: 850 Watts


Color: Black


Features

  • Fully Modular PSU: Reliable and efficient, low-noise power supply with fully modular cabling, so you only have to connect the cables your system build needs.
  • Intel ATX 3.1 Certified: Compliant with the ATX 3.1 power standard, supporting PCIe 5.1 platform withstands 2x transient power excursions from the GPU.
  • Keeps Quiet: A 120mm rifle bearing fan with a specially calculated fan curve keeps fan noise down, even when operating at full load.
  • 105C-Rated Capacitors: Delivers steady, reliable power and dependable electrical performance.
  • Modern Standby Compatible: Extremely fast wake-from-sleep times and better low-load efficiency.

Description

CORSAIR RMe Series Fully Modular Low-Noise Power Supplies provide quiet, reliable power with Cybenetics Gold efficiency to your PC. The modular cables make PC builds easy, as you connect only the cables your system requires. With ATX 3.1 and PCIe 5.1 compliance with inclusion of native 12V-2x6 connnector and cable, and an array of PCIe 8-pin power connectors, RMe PSUs have the connections needed to power today’s demanding PC hardware. Industrial-grade, 105°C-rated capacitors deliver superb electrical performance, backed by a seven-year warranty. With a 140mm-long casing that works with nearly any modern case, the CORSAIR RMe Series is steady power for your system. Box Contents 1x 24-pin ATX (24-pin) Connector Cable 2x 8-pin ATX 12V/EPS12V (4+4-pin) Connector Cables 1x 8-pin PCIe (6+2-pin) Connector Cable 1x 600W 12V-2x6 (12+4-pin) Connector Cable 1x 12V-2x6 (12+4-pin) to dual 8-pin PCIe (6+2-pin) Cable 6x SATA Connectors 2x PATA Connectors

Model Name: CORSAIR RM850e


Brand: Corsair


Compatible Devices: Monitor


Connector Type: ATX


Output Wattage: 850 Watts


Form Factor: ATX


Wattage: 850 watts


Cooling Method: Air


Item dimensions L x W x H: 5.91 x 5.51 x 3.35 inches


Item Weight: 3.4 Pounds


Product Dimensions: 5.91 x 5.51 x 3.35 inches


Item Weight: 3.37 pounds


Manufacturer: Corsair


Country of Origin: Taiwan


Item model number: CP-9020296-NA


Date First Available: January 7, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Aug 30

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Nice PSU
Style: RMe (2025) ATX 3.1, PCIe 5.1 Size: 750 Watts Color: Black
Works great, looks great. Easy to install, and provides more than enough power (according to your own setup of course). Noise is minimal, its not louder than any modern graphics card; you'll hear the GPU before the PSU. It does give a very loud thump when it turns off, but other than that, perfect piece of hardware. Always bought Corsair, never disappointed. Cabling takes a sec, but being able to mix and match allows for excellent cable management. ... show more
Reviewed in the United States on May 6, 2025 by Edward A.
    • 850e Power Supply
Style: RMe (2025) ATX 3.1, PCIe 5.1 Size: 850 Watts Color: Black
Fully modular design — clean build, fewer cables, and tidy cable routing 80 Plus Gold / Cybenetics Gold efficiency — meaning lower heat and power waste Semi-silent 120 mm rifle-bearing fan with zero‑RPM mode under low loads — great balance of cool and quiet Compact ATX 3.1 form factor (~140 mm deep) — fits snugly in most mid-tower cases Solid protection suite + 7–10 year warranty — backing Corsair’s reliability claims The RM850e is a powerful, efficient, and very capable PSU, ideal for modern builds with high-power components. ... show more
Reviewed in the United States on June 24, 2025 by Austin P.
    • Works great for almost all builds
Style: RMe (2023) ATX 3.0 & PCIe 5.0 Size: 750 Watts Color: Black
The Corsair RM750e (2023) is a fantastic power supply that combines excellent performance, energy efficiency, and quiet operation. Its fully modular design and low-noise feature make it ideal for users who care about clean builds and noise-free environments. Whether you’re building a gaming rig or a workstation, the RM750e offers reliable power that ensures your system runs smoothly. Highly recommend it for anyone looking for a premium, quiet PSU at a great price! Pros: Fully modular design for a clean and organized build. Extremely quiet operation with low-noise fan. 80 PLUS Gold certification for high efficiency and reliability. Excellent build quality and long-term durability. 750W power output suits a wide range of systems. Easy installation and superb cable management. ... show more
Reviewed in the United States on December 23, 2024 by Isaac
    • Reliable, Quiet, and Packed with Features!
Style: RMe (2023) ATX 3.0 & PCIe 5.0 Size: 750 Watts Color: Black
The Corsair RM750e (2023) Fully Modular Low-Noise Power Supply is one of the best PSU upgrades I’ve made for my build. It delivers clean, consistent power with impressive efficiency thanks to its 80 PLUS Gold certification. I’m running a high-performance gaming PC, and this PSU handles it effortlessly, even under heavy loads. The fully modular design is a lifesaver for cable management—no more unnecessary cables cluttering up my case! It made installation quick and stress-free. Another standout feature is how quiet it is. Even during intense gaming sessions, the fan barely makes a sound, keeping my setup whisper-quiet. Corsair’s build quality shines here, with premium materials and reliable components. The 750W capacity is perfect for future-proofing, and knowing Corsair includes a long warranty adds peace of mind. If you’re looking for a high-quality, efficient, and quiet PSU, the RM750e is a fantastic choice. ... show more
Reviewed in the United States on January 25, 2025 by Keisha day
    • Works Perfectly, Cables Backwards-Compatible
Style: RMe (2025) ATX 3.1, PCIe 5.1 Size: 850 Watts Color: Black
Oddly powerful enough to run an RTX 3090 and RTX 3070 together with a Ryzen 7 9700X CPU and ~12 other parts. I probably should have gotten the 1000W model instead, but I'm dumb and didn't plan ahead. Included all mentioned cables and a few other things. There are not enough included cables for both my GPUs, so I had to borrow a dual 6+2 cable from an RM750e 2019 model. Thankfully, all RMe series PSUs back to at least 2019 have full cable compatibility. Corsair has a helpful table on their website for which PSUs have compatible cables. ... show more
Reviewed in the United States on July 18, 2025 by L.B.
    • Use the cables that came in the box!
Style: RMe (2025) ATX 3.1, PCIe 5.1 Size: 1000 Watts Color: Black
This has been great so far, practically silent, and more power than I need. I haven’t had any of the issues with whine, excess noise, or excess fan speeds that some have talked about. It’s great. Learn from my mistakes. The instructions clearly say to use the cables that came with it, but I really wanted to just swap it out without redoing the cable routing in my case. That was a mistake. I tore my hair out trying to figure out why this wouldn’t run, even ordered a replacement. I had given up and swapped out all cables except the MB cable, and still no luck. I finally gave up, and as a last resort pulled my MB cable and replaced it with the one that came with this PSU. It started right up. ... show more
Reviewed in the United States on July 22, 2025 by Chris Rock
    • Good psu
Style: RMe (2025) ATX 3.1, PCIe 5.1 Size: 850 Watts Color: Black
It's worked well and it is a very good wattage for very good price. It gets pretty hot but the built-in fan works pretty well. It isn't that noisy either.
Reviewed in the United States on June 21, 2025 by Dr. Basnet

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