Power supplyATX2023ATX 3 / 80+ GoldCatalog
Corsair RM850x
An 850 W Gold unit that will feed a 4080-class GPU without drama.
What it is used for
The PSU converts wall AC to the 12 V the GPU and CPU drink. 850 W Gold is the comfortable size for a high-end 1440p/4K gaming PC.
Good for
- RTX 4070–5080 class builds
- Quiet operation
- Modular cabling
Not the pick for
- 5090 / 4090 at full board power (look at 1000 W)
- Tiny 450 W office boxes
How it scores today
Out of 100, relative to current PCs — not to the year it launched.
- Gaming90
- Video & photo86
- Office & web70
- Streaming88
- 3D & CAD84
- Local AI70
Specs
- Wattage
- 850 W
- Efficiency
- 80+ Gold
- Modular
- Fully