The be quiet! Straight Power 12 850W wins in 3 out of 7 comparable specs. Its biggest advantage is 12VHPWR Connector (100% better).
RM850x wins in 1 spec (MSRP: 12% better).
Recommendation
Choose Straight Power 12 850W if you want the best overall performance — especially 12vhpwr connector.
Choose RM850x if msrp matters more to you.
| Spec | be quiet!Straight Power 12 850W | CorsairRM850x |
|---|---|---|
| Power | ||
| Wattage | 850W | 850W |
| Efficiency | 80+ Platinum+25% | 80+ Gold |
| ATX Version | ATX 3.0+50% | ATX 2.0 |
| Design | ||
| Modular | Full | Full |
| Fan Size | 135 mm | 140 mm |
| Depth | 160 mm | 160 mm |
| Connectors | ||
| SATA Connectors | 9 | N/A |
| PCIe Connectors | 5 | N/A |
| Features | ||
| 12VHPWR Connector | Yes+100% | No |
| Warranty | 10 | 10 |
| Price | ||
| MSRP | $160 | $140−12% |
| Release Date | Jul 2023 | Sep 2021 |
