CORSAIR RM850e (2025) ATX 3.1 PCIe 5.1 Ready 850W Power Supply – White
Bottom line: The CORSAIR RM850e ATX 3.1 PCIe 5.1 Ready 850W Power Supply ($123.99 on Amazon as of 2026-10-21 04:20 UTC): Native 12V-2x6 connector and cable for PCIe 5.1 graphics cards; main trade-off: cybenetics Gold efficiency, not Platinum or Titanium.
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*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Native 12V-2x6 connector and cable for PCIe 5.1 graphics cards
- ✓ Intel ATX 3.1 certified; withstands 2x GPU transient power excursions
- ✓ Fully modular cabling, so you only run the cables your build needs
- ✓ Seven-year warranty backed by 105°C-rated capacitors
Cons
- ✗ Cybenetics Gold efficiency, not Platinum or Titanium
- ✗ Uses a rifle bearing fan rather than a fluid dynamic bearing
- ✗ Listing does not mention a zero-RPM fan mode
- ✗ No software monitoring or digital control listed
Manufacturer description
The Corsair RM850e (2025) is an 850W fully modular power supply in white, built for current builds that need ATX 3.1 and PCIe 5.1 support. It is Intel ATX 3.1 certified and handles transient power spikes up to 2x from your graphics card. It also includes a native 12V-2x6 connector and cable, plus a set of PCIe 8-pin connectors for cards that still use them. Because the cabling is fully modular, you only connect the cables your system needs. That means less clutter in the case and better airflow. A 120mm rifle bearing fan runs on a tuned fan curve to keep noise down, even at full load…
SpecPicks Verdict
SpecPicks scored CORSAIR RM850e ATX 3.1 PCIe 5.1 Ready 850W Power Supply using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies & cables category. Compare with similarly-priced alternatives in the power supplies & cables 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 & cables 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
Does the Corsair RM850e (2025) work with graphics cards that use the 12V-2x6 connector?
Yes. It includes a native 12V-2x6 connector and cable and is ATX 3.1 and PCIe 5.1 compliant. Check your GPU maker's recommended PSU wattage to confirm 850W covers your full system.
How loud is the RM850e?
Corsair uses a 120mm rifle bearing fan with a specially calculated fan curve to keep noise down, even at full load. The listing gives no decibel figure, so check the product page for measured noise specs.
What warranty comes with the Corsair RM850e (2025)?
Corsair's product description says the unit has a seven-year warranty. Check the current listing for the exact terms and how to register.
Will the RM850e fit in my case?
The casing is 140mm long, so it fits nearly all standard ATX cases. Before you buy, compare that length with your case's PSU clearance, and leave room for the modular cables.
What is the efficiency rating of this power supply?
It is rated Cybenetics Gold. It also supports Modern Standby for better efficiency at low loads and fast wake-from-sleep times.
Key Features
- Fully Modular PSU: Reliable and efficient, low-noise power supply with fully modular cabling, so you only have to connect the cables your system build needs
- Intel ATX 3.1 Certified: Compliant with the ATX 3.1 power standard, supporting PCIe 5.1 platform withstands 2x transient power excursions from the GPU
- Keeps Quiet: A 120mm rifle bearing fan with a specially calculated fan curve keeps fan noise down, even when operating at full load
- 105°C-Rated Capacitors: Delivers steady, reliable power and dependable electrical performance
- Modern Standby Compatible: Extremely fast wake-from-sleep times and better low-load efficiency
Full Specifications
| Brand | Corsair |
|---|---|
| Color | White |
| Model Name | CORSAIR RM850e |
| Unit Count | 1 Count |
| Form Factor | ATX |
| Keeps Quiet | A 120mm rifle bearing fan with a specially calculated fan curve keeps fan noise down, even when operating at full load |
| Model Number | CP-9020293-NA |
| Connector Type | ATX |
| Cooling Method | Air |
| Number of Fans | 1 |
| Output Wattage | 850 watts |
| Item Dimensions | 5.91 x 5.51 x 3.35 inches |
| Mfr Part Number | CP-9020293-NA |
| Number of Items | 1 |
| Fully Modular PSU | Reliable and efficient, low-noise power supply with fully modular cabling, so you only have to connect the cables your system build needs |
| Compatible Devices | Monitor |
| Power Supply Design | Full Modular |
| Warranty Description | 7 Year Manufacturer |
| Maximum Input Voltage | 240 volts_of_alternating_current |
| Minimum Input Voltage | 100 volts_of_alternating_current |
Ready to buy?
CORSAIR RM850e (2025) ATX 3.1 PCIe 5.1 Ready 850W Power Supply – White 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.
*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
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