CORSAIR RM850x Fully Modular ATX Power Supply - 80 Plus Gold - Low-Noise Fan - Zero RPM - Black
*Price sourced from Amazon.com. Last updated 2026-05-21. Price and availability subject to change.
CORSAIR RM850x Series fully modular power supplies with EPS12V connectors are built with the highest quality components to deliver 80 PLUS Gold efficient power to your PC. RM850x PSUs use only Japanese 105°C capacitors, for long life and reliability backed by a ten-year warranty. A 135mm magnetic levitation bearing fan ensures high performance coupled with low noise.
SpecPicks Verdict
SpecPicks classifies CORSAIR RM850x Fully Modular ATX Power Supply - 80 Plus Gold… as a category leader on buyer feedback in the power supplies category, based on 5,679 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. 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 — 4.8★ average across customer reviews
- ✓ Large, well-vetted feedback pool (5,679 reviews)
- ✓ EPS12V Connector: For wide compatibility with modern graphics cards and motherboards.
- ✓ 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
Key Features
- Fully Modular: Only connect the cables your system needs, making clean and tidy builds easier.
- 135mm Magnetic Levitation Fan: Utilizes a magnetic levitation bearing and custom engineered rotors for high performance, low noise, and superior reliability.
- EPS12V Connector: For wide compatibility with modern graphics cards and motherboards.
- 100% All Japanese 105°C Capacitors: Premium internal components ensure unwavering power delivery and long-term reliability.
- Modern Standby Compatible: Extremely fast wake-from-sleep times and better low-load efficiency.
- 80 PLUS Gold Certified: High efficiency operation for lower power consumption, less noise, and cooler temperatures.
Full Specifications
| Brand | Corsair |
|---|---|
| Color | Black |
| Wattage | 850 watts |
| Fan Size | 135 Millimeters |
| Model Name | RM850X |
| Unit Count | 1.0 Count |
| Form Factor | ATX |
| Model Number | CP-9020200-NA |
| Fully Modular | Only connect the cables your system needs, making clean and tidy builds easier. |
| Connector Type | ATX |
| Cooling Method | Air |
| Number of Fans | 1 |
| Output Wattage | 850 Watts |
| Item Dimensions | 6.3 x 5.91 x 3.39 inches |
Ready to buy?
CORSAIR RM850x Fully Modular ATX Power Supply - 80 Plus Gold - Low-Noise Fan - Zero RPM - Black 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 2026-05-21. Price and availability subject to change.
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