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ALIMENTATIONS Corsair 601-850 Watt RM850X 850W V2 CP-9020180-EU

ALIMENTATIONS Corsair 601-850 Watt RM850X 850W V2 CP-9020180-EU

Bottom line: The ALIMENTATIONS Corsair 601-850 Watt RM850X 850W V2 CP-9020180-EU ($218.00 on Amazon as of 2026-10-06): 850W output covers a single high-end GPU plus an overclocked CPU with transient headroom; main trade-off: EU part number (CP-9020180-EU) means the AC cable may not fit non-EU outlets.

$218.00

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Buy on Amazon — $218.00 Compare to similar power supplies

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 850W output covers a single high-end GPU plus an overclocked CPU with transient headroom
  • ✓ Corsair RMx line is a long-running, widely stocked PSU family
  • ✓ 850W sizing avoids overpaying for a 1000W+ unit on a single-GPU build
  • ✓ V2 revision of the RM850X, not the original launch spec

Cons

  • ✗ EU part number (CP-9020180-EU) means the AC cable may not fit non-EU outlets
  • ✗ Listing does not specify the 80 PLUS efficiency tier
  • ✗ Connector count and cable lengths are not listed - verify against your GPU
  • ✗ No stated warranty length on this listing

Manufacturer description

The Corsair RM850X is an 850W ATX power supply (model CP-9020180-EU, V2 revision) built for mid-range and high-end gaming builds that need headroom for a modern GPU plus an overclocked CPU. At 850 watts, it sits in the sweet spot for single-GPU rigs where a 650W unit leaves no transient margin and a 1000W unit is money you don't need to spend. That kind of sample size matters for a PSU, because power supply problems surface over years of duty cycles rather than in a first-week impression. A few things to check before you order. This is the EU part number (CP-9020180-EU), so confirm the…

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SpecPicks Verdict

SpecPicks scored ALIMENTATIONS Corsair 601-850 Watt RM850X 850W V2 CP-9020180-EU using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. Compare with similarly-priced alternatives in the power supplies category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for power supplies of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Is 850W enough for my gaming PC?

850W is the common recommendation for a single high-end GPU paired with a mainstream or overclocked CPU, and it leaves margin for GPU transient spikes. Add up your GPU and CPU power draw and target roughly 1.5x that figure.

What does the -EU in CP-9020180-EU mean?

It indicates the EU regional SKU, which normally ships with a European AC power cable. The PSU itself accepts standard input, but if you are outside the EU you may need your own region's C13 cord.

What is the difference between this V2 and the original RM850X?

This listing is the V2 revision of the RM850X. Corsair revises RMx units across generations for internal component and connector changes; check the product listing for the exact revision specifications.

What warranty comes with this power supply?

Warranty terms are not stated on this listing and vary by region and seller. Check the current product listing and Corsair's regional support page for coverage that applies to your purchase.

Key Features

  • RM850X 850W V2

Full Specifications

BrandCorsair
Wattage850 watts
Fan Size13.5 centimeters
Model NameRM850x
Form FactorATX
Model NumberCP-9020180-EU
Connector TypePCI Express, SATA
Cooling MethodAir
Item Type NamePower supply units
Number of Fans1
Output Wattage850 watts
Item Dimensions6.3 x 5.91 x 3.39 inches
Mfr Part NumberCP-9020180-EU
Compatible DevicesPersonal Computer
Connector Quantity28
Power Supply DesignFull Modular
Warranty Description2 year manufacturer
Maximum Input Voltage264 volts_of_alternating_current
Minimum Input Voltage100 volts
Item dimensions L x W x H6.3 x 5.91 x 3.39 inches

Ready to buy?

ALIMENTATIONS Corsair 601-850 Watt RM850X 850W V2 CP-9020180-EU is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $218.00

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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ALIMENTATIONS Corsair 601-850 Watt RM850X 850W V2 CP-9020180-EU
$218.00
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