be quiet! Dark Power Pro 13 850W vs Corsair RM850x (2024)
Efficiency, ATX compliance, 12V-2x6 support, Cybenetics rating, and 5-year total cost of ownership.
| Spec | be quiet! Dark Power Pro 13 850W | Corsair RM850x (2024) |
|---|---|---|
| Wattage | 850W | 850W |
| Efficiency Tier | titanium | gold |
| ATX Version | ATX 3.1 | ATX 3.1 |
| 12V-2x6 (RTX 5090 safe) | ✓ Yes | ✓ Yes |
| Modular | full | full |
| Cybenetics Rating | ETA-A+ | ETA-A |
| MSRP | $279 | $139 |
| Est. Annual Electricity Cost | $238/yr | $252/yr |
| 5-Year Total Cost (TCO) | $1469 | $1399 |
5-Year Total Cost of Ownership
Assuming 500W average draw, 8 hours/day gaming, and $0.15/kWh electricity:
Corsair RM850x (2024) costs ~$1399 over 5 years (purchase + electricity), saving approximately $70 compared to be quiet! Dark Power Pro 13 850W.
Note: be quiet! Dark Power Pro 13 850W has higher efficiency but higher upfront cost. The TCO crossover depends on your electricity rate and usage.
Frequently Asked Questions
Which is more efficient — be quiet! Dark Power Pro 13 850W or Corsair RM850x (2024)?
be quiet! Dark Power Pro 13 850W is rated 80+ Titanium (~92% efficient), making it more efficient than Corsair RM850x (2024) (80+ Gold (~87% efficient)). Higher efficiency means less electricity waste as heat, lower operating costs, and better thermal performance.
Can be quiet! Dark Power Pro 13 850W run an RTX 5090?
be quiet! Dark Power Pro 13 850W includes a native 12V-2x6 cable and supports ATX 3.1 — it is compatible with the RTX 5090, provided the wattage (850W) is sufficient for your full build.
Which has lower long-term cost?
At $0.15/kWh and 8 hours/day, Corsair RM850x (2024) costs ~$1399 total over 5 years (purchase + electricity) vs ~$1469 for be quiet! Dark Power Pro 13 850W — a difference of ~$70.