Corsair
Corsair RM1000x (ATX 3.1)
1,000 W · 80 PLUS Gold · Full
8.1
$170Nov 9
Corsair RM850e ATX 3.1 with ThermalProtect Cable
An 850 W Cybenetics Platinum ATX 3.1 unit whose bundled 12V-2x6 cable can shut the GPU down if its connector overheats.
- 850 W
- Cybenetics Platinum
- Full
- ATX 3.1
- ATX
PCPR score
8.1
Great
Best price we’ve seen
$140Nov 9
Checked recently. Confirm at the retailer.
R1
The short version
This revision of the 850 W RMe adds Corsair's ThermalProtect 12V-2x6 cable, which uses on-cable over-temperature protection to shut the GPU down if the connector runs unsafely hot. Corsair rates it Cybenetics Platinum for efficiency and A for noise, in a short 140 mm body. The 1000 W model of the same line tested well at Tom's Hardware. It suits high-end GPU builds that value connector safety, though the warranty is seven years.
Pros
- ThermalProtect 12V-2x6 cable with on-cable over-temperature protection
- Cybenetics Platinum efficiency rating per Corsair
- Short 140 mm casing with Zero RPM mode
- Includes a 12V-2x6 to dual 8-pin cable and an 8-pin PCIe cable
Cons
- Seven-year warranty, shorter than Corsair's RMx line
- Only one dedicated 8-pin PCIe cable
- Tom's Hardware found Teapo capacitors and a shared 12V-2x6 socket on the 1000 W sibling
Best for
- High-end GPU builds that value connector safety
- Short-PSU ATX builds
J3
Full specifications
Core
- Wattage
- 850 W
- Form factor
- ATX
- Efficiency
- Cybenetics Platinum
- ATX standard
- ATX 3.1
Features
- Modularity
- Full
- Warranty
- 7 years
Physical
- Length
- 140 mm
- Color
- Black
Connectivity
- 12V-2x6 / 16-pin
- 1
- PCIe 8-pin
- 1
- EPS 8-pin
- 2
- SATA power
- 6
- Molex
- 2
Cooling
- Zero-RPM mode
- Yes
Compatibility notes
- Dual 8-pin cable plugs into a 12V-2x6 socket, so it is counted separately from the native PCIe 8-pin connector
- ThermalProtect ships with this SKU; a separate RM850e SKU (CP-9020296) lacks ThermalProtect in its name, so check the product code
P1
Where to buy
Official store
Seen Nov 9, 2026
$139.99
Buy from the makerBest Buy
Seen Nov 9, 2026
$139.99
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AV1
Video reviews
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AV2
What reviewers and owners say
Tom's Hardware
PositiveTom's Hardware tested the 1000 W model of this ThermalProtect RMe line, reporting strong efficiency and electrical results and a long fanless window, while noting Teapo capacitors, a seven-year warranty and a shared 12V-2x6 socket.
4/5 · 2026-08-30
Read the source
Summaries are written in our words. Follow the links for each source’s own review.
R9
Common questions
What does the ThermalProtect cable do?
Corsair says the 12V-2x6 cable has built-in over-temperature protection. If it detects an unsafe temperature at the connector, it causes the GPU to shut down to prevent damage.
How long is this RM850e?
Corsair lists 140 x 150 x 86 mm dimensions, so it is a 140 mm unit that fits standard ATX PSU mounts and most shrouded cases.
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