EVGA SuperNOVA 650 G6 vs Corsair RM750x (2024)
Efficiency, ATX compliance, 12V-2x6 support, Cybenetics rating, and 5-year total cost of ownership.
| Spec | EVGA SuperNOVA 650 G6 | Corsair RM750x (2024) |
|---|---|---|
| Wattage | 650W | 750W |
| Efficiency Tier | gold | gold |
| ATX Version | ATX 2.x | ATX 3.1 |
| 12V-2x6 (RTX 5090 safe) | ✗ No | ✓ Yes |
| Modular | full | full |
| Cybenetics Rating | — | ETA-A |
| MSRP | $79 | $109 |
| Est. Annual Electricity Cost | $252/yr | $252/yr |
| 5-Year Total Cost (TCO) | $1339 | $1369 |
5-Year Total Cost of Ownership
Assuming 500W average draw, 8 hours/day gaming, and $0.15/kWh electricity:
EVGA SuperNOVA 650 G6 costs ~$1339 over 5 years (purchase + electricity), saving approximately $30 compared to Corsair RM750x (2024).
Frequently Asked Questions
Which is more efficient — EVGA SuperNOVA 650 G6 or Corsair RM750x (2024)?
EVGA SuperNOVA 650 G6 is rated 80+ Gold (~87% efficient), making it more efficient than Corsair RM750x (2024) (80+ Gold (~87% efficient)). Higher efficiency means less electricity waste as heat, lower operating costs, and better thermal performance.
Can EVGA SuperNOVA 650 G6 run an RTX 5090?
EVGA SuperNOVA 650 G6 does not include a native 12V-2x6 connector. Running an RTX 5090 would require an adapter cable, which is not recommended at the 5090's 575W TBP. Upgrade to an ATX 3.1 PSU with a native 12V-2x6 port.
Which has lower long-term cost?
At $0.15/kWh and 8 hours/day, EVGA SuperNOVA 650 G6 costs ~$1339 total over 5 years (purchase + electricity) vs ~$1369 for Corsair RM750x (2024) — a difference of ~$30.