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Corsair RM850e Fully Modular Low-Noise ATX 850W Gold Power Supply
Corsair

Corsair RM850e

View on AmazonView on corsair.com
Wattage:
850 W
80 PLUS Rating:
Gold
Modularity:
Fully Modular
ATX Standard:
ATX 3.1

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Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.

Manufacturer: Corsair Last updated: 2026-09-15

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Corsair RM850e Review

Searching for an 850W 80 PLUS Gold PSU with native ATX 3.1 support for a current-gen GPU, the Corsair RM850e is Corsair's mainstream e-series option at this wattage.

We'd recommend it for RTX 4070 Ti Super/4080-class builds that want one native 12V-2x6 cable without spending RM850x or HX850i money. It carries a Cybenetics Platinum efficiency badge despite being 80 PLUS Gold, so real-world efficiency is better than the sticker suggests.

Power Headroom

850W gives comfortable headroom for a single high-end GPU plus an overclocked Core i7/Ryzen 7 CPU. Zero-RPM keeps the fan off at idle and light load, and the 105C-rated capacitors are a step up from budget units.

Our verdict

Reviewed by Burooj Alam. Rated by us, not by users.

Best for

  • RTX 4070 Ti Super / 4080 builds
  • Buyers wanting native 12V-2x6 at a mid-range price
  • Systems needing quiet idle operation

Not for

  • Dual-GPU or workstation loads
  • Buyers wanting sleeved cables
  • Anyone needing 2+ 12V-2x6 connectors

Specifications

What these specs mean

Identity

BrandCorsair
Model NumberRM850e

Standards and compliance

PCIe CEM StandardPCIe 5.1

Connector inventory

EPS 8-pin Connectors2
SATA Connectors6
Molex Connectors2

Form factor and fit

Length140 mm
ColourBlack

Cooling

Fan BearingRifle

Build quality

TopologyResonant LLC with DC-DC conversion
MTBF100000 hours

Cables

ModularityFully Modular

Monitoring, protection and price

Price129.99 USD
Warranty7 years
Wattage850 W
80 PLUS RatingGold
ATX StandardATX 3.1
Form FactorATX
Cybenetics EfficiencyGold
Cybenetics NoiseA
12V-2x6 Connectors1
Zero-RPM ModeYes
PCIe 8-pin Connectors3
Connector Count1x 24-pin ATX, 2x EPS 8-pin (4+4), 1x 12V-2x6 (12+4), 3x PCIe 6+2-pin (1 single cable + 2 via 12V-2x6-to-dual-8-pin cable), 6x SATA, 2x Molex
Fan Size120 mm

FAQs

What are the key specifications of the Corsair RM850e (850W/80+ Gold/Fully Modular/ATX 3.1/Native 12V-2x6)?

Key specs for the Corsair RM850e: Wattage 850 W, Modularity Fully Modular, Fan Size 120 mm, Warranty 7 years, 80 PLUS Rating Gold, Cybenetics Efficiency Gold.

Will the Corsair RM850e (850W/80+ Gold/Fully Modular/ATX 3.1/Native 12V-2x6) work with my current setup?

The Corsair RM850e (850W/80+ Gold/Fully Modular/ATX 3.1/Native 12V-2x6) lists Wattage is 850 W. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.

Who is the Corsair RM850e (850W/80+ Gold/Fully Modular/ATX 3.1/Native 12V-2x6) best suited to?

Best suited to: RTX 4070 Ti Super / 4080 builds; Buyers wanting native 12V-2x6 at a mid-range price; Systems needing quiet idle operation.

What are the drawbacks of the Corsair RM850e (850W/80+ Gold/Fully Modular/ATX 3.1/Native 12V-2x6)?

Not the best fit for: Dual-GPU or workstation loads; Buyers wanting sleeved cables; Anyone needing 2+ 12V-2x6 connectors.

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