Amazon Renewed
Corsair RMX Series (2021), RM850x, 850 Watt, Gold, Fully Modular Power Supply (Renewed)
*Price sourced from Amazon.com. Last updated 2026-05-24. Price and availability subject to change.
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 classifies Corsair RMX Series (2021), RM850x, 850 Watt, Gold, Fully Modular… as a category leader on buyer feedback in the power supplies category, based on 51 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. Amazon Renewed's positioning sits comfortably above the category median. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
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 Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Highly rated — 4.6★ average across customer reviews
- ✓ Backed by Amazon Renewed's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
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 |
Ready to buy?
Corsair RMX Series (2021), RM850x, 850 Watt, Gold, Fully Modular Power Supply (Renewed) is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-24. Price and availability subject to change.
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