Corsair
Corsair RM1000x (ATX 3.1)
1,000 W · 80 PLUS Gold · Full
8.1
$170Nov 9
Corsair RM850x (ATX 3.1)
Corsair's best-selling 850 W Gold unit, updated to ATX 3.1 with a native 12V-2x6 cable.
- 850 W
- Cybenetics Gold
- Full
- ATX 3.1
- ATX
PCPR score
8.0
Great
Best price we’ve seen
$140Nov 9
Checked recently. Confirm at the retailer.
R1
The short version
The updated RM850x keeps the formula of Corsair's best-selling line: fully modular Type 4 cables, a Zero RPM fan mode, 105 C Japanese capacitors and a 10-year warranty. This revision is ATX 3.1 compliant and includes a native 12V-2x6 cable. It suits most gaming builds up to an RTX 5080-class card. The Gold rating is Cybenetics rather than 80 PLUS on the product page.
Pros
- Native 12V-2x6 cable included
- Ten-year warranty
- Fully modular Type 4 cabling
- Zero RPM fan mode
Cons
- Only three PATA connectors and no digital monitoring
- Gold rather than Platinum
- Corsair's page text does not list the PCIe 8-pin cable count
Best for
- Mainstream and upper mid-range gaming builds
- Buyers wanting a long warranty
J3
Full specifications
Core
- Wattage
- 850 W
- Form factor
- ATX
- Efficiency
- Cybenetics Gold
- ATX standard
- ATX 3.1
Features
- Modularity
- Full
- Warranty
- 10 years
Physical
- Length
- 160 mm
- Color
- Black
Connectivity
- 12V-2x6 / 16-pin
- 1
- EPS 8-pin
- 2
- SATA power
- 8
- Molex
- 3
Cooling
- Zero-RPM mode
- Yes
Compatibility notes
- Native 12V-2x6 cable included
- Corsair lists the unit at 160 mm long
- PCIe 8-pin count not confirmed from the product page text
P1
Where to buy
Official store
Seen Nov 9, 2026
$139.99
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AV1
Video reviews
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R9
Common questions
Is the RM850x enough for an RTX 5080?
Corsair markets the line for current high-power GPUs and includes a native 12V-2x6 cable. Check the graphics card maker's recommended power supply wattage for the exact model.
What warranty does the Corsair RM850x (ATX 3.1) carry?
The maker lists a 10-year warranty on its product page. Warranty terms can differ by region.
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