Amazon Renewed

Corsair RMX Series (2021), RM850x, 850 Watt, Gold, Fully Modular Power Supply (Renewed)

Name: Corsair RMX Series (2021), RM850x, 850 Watt, Gold, Fully Modular Power Supply (Renewed)
Brand: Amazon Renewed
SKU: B09D39JD1G

Status: Corsair RMX Series: Unavailable on Amazon as of 2026-10-06 16:17 UTC. SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.

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Bottom line: The Amazon Renewed Corsair RMX Series is a specs-and-price decision rather than a crowd-consensus one in the power supplies category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

Unavailable on Amazon as of 2026-10-06 16:17 UTC

As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →

Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives:

Similar: ALIMENTATIONS Corsair 601-850 Watt RM850X 850W… — $218.00 on Amazon as of 2026-10-06 10:12 UTC (price may vary).

View Current Price — $218.00

Similar: CORSAIR RM850x Fully Modular Low-Noise ATX Power… — $85.69 on Amazon as of 2026-10-06 22:20 UTC (price may vary).

View Current Price — $85.69

Similar: CORSAIR RM850x Shift Fully Modular ATX Power… — $89.50 on Amazon as of 2026-10-06 16:28 UTC (price may vary).

View Current Price — $89.50

Original listing (currently unavailable) → Compare to similar power supplies

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-06

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. About the author →

Pros & Cons

Pros

✓ Backed by Amazon Renewed's warranty and support channels

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated

Manufacturer description

This pre-owned or refurbished product has been professionally inspected and tested to work and look like new. How a product becomes part of Amazon Renewed, your destination for pre-owned, refurbished products: A customer buys a new product and returns it or trades it in for a newer or different model. That product is inspected and tested to work and look like new by Amazon-qualified suppliers. Then, the product is sold as an Amazon Renewed product on Amazon. If not satisfied with the purchase, renewed products are eligible for replacement or refund under the Amazon Renewed Guarantee.

SpecPicks Verdict

SpecPicks scored Amazon Renewed Corsair RMX Series using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. Amazon Renewed's power supplies lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. 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.

Full Specifications

Brand	Corsair
Wattage	850 watts
Model Name	RM850X
Form Factor	ATX
Connector Type	ATX
Cooling Method	Air
Output Wattage	850 Watts
Item Dimensions	6.3 x 5.91 x 3.39 inches
Mfr Part Number	CP-9020200-NA-cr
Compatible Devices	Personal Computer
Power Supply Design	Full Modular
Warranty Description	90 days limited warranty
Maximum Input Voltage	130 Volts (AC)
Minimum Input Voltage	100 Volts
Item dimensions L x W x H	6.3 x 5.91 x 3.39 inches
System Bus Connector Type	ATX
Connector Type Used on Cable	ATX

Ready to buy?

Amazon shows no buyable offer for Corsair RMX Series at the last check. A similar in-stock product is ALIMENTATIONS Corsair 601-850 Watt RM850X 850W…. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Similar — $218.00