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  • 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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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

4.6 out of 5 stars 144 ratings
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Model name 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 15 x 14 x 8.5 Centimetres
Item weight 1.53 kg

About this item

  • 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.
  • 105°C-Rated Capacitors: Delivers steady, reliable power and dependable electrical performance.
  • Modern Standby Compatible: Extremely fast wake-from-sleep times and better low-load efficiency.
› See more product details

Product information

Technical Details

Summary
Brand ‎Corsair
Series ‎RM850e
Item model number ‎CP-9020296-NA
Product Dimensions ‎15.01 x 14 x 8.51 cm; 1.53 kg
Item dimensions L x W x H ‎15 x 14 x 8.5 Centimetres
Colour ‎Black

Additional Information

ASIN B0DPR86ZC8
Customer Reviews
4.6 out of 5 stars 144 ratings

4.6 out of 5 stars
鶹 Rank
Date First Available Jan. 7 2025
Manufacturer Corsair

Warranty & Support

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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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Product 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

Top Brand: Corsair

Highly Rated
100K+ customers rate items from this brand highly
Trending
50K+ orders for this brand in past 3 months
Low Returns
Customers usually keep items from this brand

From the brand

From the manufacturer

corsair RMe power supply; RMe; RMe 2025; RMe PSU; Low Noise PSU; Fully Modular PSU; ATX PSU;
atx 3.1; pcie 5.1; atx 3.1 certified; pcie 5.1 support; atx 3.1 psu; pcie 5.1 psu; next gen psu;
native 12v-2x6; gpu connector; psu for 600w gpu; nvidia 50 series psu;
japanese capacitors; industrial grade capacitors; reliable psu; consistent psu;
low nose psu; compact psu; easy installation power supply;
50 series gpu; 50 series graphics card; 50 series power supply; 50 series psu;

Corsair is Ready for Next-Gen GPUs

RMe Series (3rd Gen)

Buying Options

SF Series

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RMx Series

RMx SHIFT Series

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HXi Series

Customer Reviews
4.2 out of 5 stars 88
4.4 out of 5 stars 2,294
4.7 out of 5 stars 238
4.7 out of 5 stars 12,107
4.5 out of 5 stars 434
Native 12v-2x6
Yes No, 8-pin to 12V-2x6 Cable Yes No, 8-pin to 12V-2x6 Cable No, 8-pin to 12V-2x6 Cable
ATX 3.1 & PCIe 5.1
✔ ✔ ✔ ✔ ✔
Cybenetics Efficiency
Gold Platinum Gold Gold Platinum
Min. Cybenetics Noise Level
A- Standard++ A A- A-
Features
Zero RPM Mode Zero RPM Mode Zero RPM Mode, Manual Override Zero RPM Mode Zero RPM Mode

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Customer reviews

4.6 out of 5 stars
144 global ratings

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Top reviews from Canada

  • Steven
    5.0 out of 5 stars Great power supply
    Reviewed in Canada on July 21, 2025
    Verified Purchase
    It works, 850 watts of power and 50 series ready. Good brand, got it on sale. Powers my 5800xt system.
    Helpful
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  • Harmony Sault
    5.0 out of 5 stars Easy to use
    Reviewed in Canada on July 25, 2025
    Verified Purchase
    Modular cords were easy to figure out and use building my first PC, the power supply works great and was easy to install.
    Helpful
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  • Mark Fisher
    5.0 out of 5 stars Worked as expected.
    Reviewed in Canada on July 19, 2025
    Verified Purchase
    Great power supply.
    Helpful
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  • Rachel Flavel
    4.0 out of 5 stars compatiability with its own brand
    Reviewed in Canada on July 20, 2025
    Verified Purchase
    got this to replace my Antec VP 500 PSU and so far my only complaint about it is that my Corsair H100I RGB Pro XT Liquid coolers LED's do not light up, I'm a little disapointed that a corsair product is not combatible with another corsair product but it did fix my main issue of not enough power going to my hard drives and now im finally able to use my PC the way I Designed it to be
    Helpful
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  • Larry R.
    1.0 out of 5 stars NOT WORKING ....DEFECTIVE NOT USABLE
    Reviewed in Canada on July 2, 2025
    Verified Purchase
    not working ......defective
    Helpful
     Report
  • T. R.
    3.0 out of 5 stars Only six SATA cables!
    Reviewed in Canada on April 17, 2025
    Verified Purchase
    Six SATA power cables on an 850 watt power supply? And not even extra ports to add more? That’s insane.
    Helpful
     Report

Top reviews from other countries

  • Austin P.
    5.0 out of 5 stars 850e Power Supply
    Reviewed in the United States on June 24, 2025
    Verified Purchase
    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.
    Report
  • L.B.
    5.0 out of 5 stars Works Perfectly, Cables Backwards-Compatible
    Reviewed in the United States on July 18, 2025
    Verified Purchase
    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.
    Report
  • Dr. Basnet
    4.0 out of 5 stars Good psu
    Reviewed in the United States on June 21, 2025
    Verified Purchase
    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.
    Report
  • S.b
    5.0 out of 5 stars Handles My i9-12900KS + RTX 3090 Rig Without Breaking a Sweat
    Reviewed in the United States on June 27, 2025
    Verified Purchase
    I’ve been building PCs for over a decade, and this is easily one of the most impressive power supplies I’ve used to date. I picked up the CORSAIR RM850e (2025 revision) as part of a rebuild centered around an Intel i9-12900KS and RTX 3090, and I’ve been nothing but impressed so far.

    Build Quality & Design:
    The unit itself is solid — heavy in a reassuring way, with a clean black finish and no unnecessary branding or flashy extras. The fully modular design is a huge plus, especially for managing cables in a tight mid-tower. I appreciated that the included cables were all black and flat — easy to route behind the motherboard tray, and they look clean without custom sleeving.

    Installation & Cabling:
    Installation was simple, and everything fit snugly. I’m using the standard 3x 8-pin for the 3090, but it’s nice knowing the 12V-2x6 cable is included in case I upgrade to a future PCIe 5.1 card later on. No loose connectors, no weird bends required — and unlike some modular PSUs I’ve dealt with, the ports on the unit are clearly labeled and firmly seated.

    Performance & Stability:
    Despite powering a very power-hungry setup, this PSU hasn’t flinched once. The 12900KS, even under boost/load, can be a voltage-hungry CPU, especially paired with the 3090 — but even during max load stress testing (Cinebench + Heaven benchmark running together), rails stayed completely stable, no crashes or brownouts, and no sign of power-related instability.

    Noise & Efficiency:
    Corsair nailed the noise levels. During idle and light gaming, the fan doesn't even spin up. Even when it does under load, it’s so quiet it fades into the background of my other case fans. My case has good airflow, but the fan curve on this PSU is genuinely impressive. It’s also Cybenetics Gold rated, and the system draws power very efficiently — I've been monitoring wattage via a smart plug, and it lines up well with published benchmarks for power efficiency.

    Extras & Future-Proofing:

    ATX 3.1 & PCIe 5.1 ready

    105°C-rated Japanese capacitors (a must for long-term reliability)

    Modern Standby support works perfectly — fast wake times, zero sleep issues in Windows 11

    Final Thoughts:
    For anyone running a high-end system like mine — especially with power-hungry components like the i9-12900KS and RTX 3090 — this PSU offers peace of mind. No coil whine, no overheating, no second-guessing whether it’s enough. It’s quiet, efficient, and built with headroom for future GPUs thanks to the included 12V-2x6 cable and compliance with the latest standards.

    Highly recommend if you’re building or upgrading a performance-focused rig and want something that’ll last.
    Report
  • Blake
    5.0 out of 5 stars Rock-Solid, Future-Ready PSU with Quiet Operation
    Reviewed in the United States on July 14, 2025
    Verified Purchase
    This PSU is exactly what I was looking for. The CORSAIR RM850e is super quiet, runs cool, and has all the modern connections I need — including the new 12V-2x6 cable for next-gen GPUs. It’s fully modular, which made my build way cleaner and easier to manage.

    I love that it’s ATX 3.1 and PCIe 5.1 ready, so I don’t have to worry about upgrading anytime soon. It just feels like a really solid, well-built unit. If you're doing a new build or upgrading, this power supply is a no-brainer.
    Report