EVGA SuperNOVA 850 G7 vs Seasonic PRIME TX-1000
Efficiency, ATX compliance, 12V-2x6 support, Cybenetics rating, and 5-year total cost of ownership.
| Spec | EVGA SuperNOVA 850 G7 | Seasonic PRIME TX-1000 |
|---|---|---|
| Wattage | 850W | 1000W |
| Efficiency Tier | gold | titanium |
| ATX Version | ATX 2.x | ATX 3.1 |
| 12V-2x6 (RTX 5090 safe) | ✗ No | ✓ Yes |
| Modular | full | full |
| Cybenetics Rating | — | ETA-A++ |
| MSRP | $139 | $329 |
| Est. Annual Electricity Cost | $252/yr | $238/yr |
| 5-Year Total Cost (TCO) | $1399 | $1519 |
5-Year Total Cost of Ownership
Assuming 500W average draw, 8 hours/day gaming, and $0.15/kWh electricity:
EVGA SuperNOVA 850 G7 costs ~$1399 over 5 years (purchase + electricity), saving approximately $120 compared to Seasonic PRIME TX-1000.
Note: Seasonic PRIME TX-1000 has higher efficiency but higher upfront cost. The TCO crossover depends on your electricity rate and usage.
Frequently Asked Questions
Which is more efficient — EVGA SuperNOVA 850 G7 or Seasonic PRIME TX-1000?
Seasonic PRIME TX-1000 is rated 80+ Titanium (~92% efficient), making it more efficient than EVGA SuperNOVA 850 G7 (80+ Gold (~87% efficient)). Higher efficiency means less electricity waste as heat, lower operating costs, and better thermal performance.
Can EVGA SuperNOVA 850 G7 run an RTX 5090?
EVGA SuperNOVA 850 G7 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 850 G7 costs ~$1399 total over 5 years (purchase + electricity) vs ~$1519 for Seasonic PRIME TX-1000 — a difference of ~$120.