The Corsair RM850x wins in 4 out of 7 comparable specs. Its biggest advantage is Warranty (233% better).
CV550 wins in 1 spec (MSRP: 68% better).
Recommendation
Choose RM850x if you want the best overall performance — especially warranty.
Choose CV550 if msrp matters more to you.
| Spec | CorsairCV550 | CorsairRM850x |
|---|---|---|
| Power | ||
| Wattage | 550W | 850W+55% |
| Efficiency | 80+ Bronze | 80+ Gold+100% |
| ATX Version | ATX 2.0 | ATX 2.0 |
| Design | ||
| Modular | No | Full+200% |
| Fan Size | 120 mm | 140 mm |
| Depth | 125 mm | 160 mm |
| Features | ||
| 12VHPWR Connector | No | No |
| Warranty | 3 | 10+233% |
| Price | ||
| MSRP | $45−68% | $140 |
| Release Date | Mar 2020 | Sep 2021 |
