Seasonic - FOCUS GX-850 vs Seasonic - PRIME TX-1300 Noctua
Between the FOCUS GX-850 and PRIME TX-1300 Noctua, the FOCUS GX-850 comes out ahead in several specs, while the PRIME TX-1300 Noctua wins on wattage / warranty. Overall, the FOCUS GX-850 scores 61.1 and the PRIME TX-1300 Noctua scores 82 on our Mars Score.
Which should you buy?
The PRIME TX-1300 Noctua is the clear pick on raw spec strength, leading by 20.9 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
The FOCUS GX-850 does not pull ahead on any single popular-comparison spec — its strengths sit in the spec-table groups rather than the headline advantages.
Pick the PRIME TX-1300 Noctua if you care most about wattage / warranty. Its strongest claims are wattage, warranty, efficiency.
Both ship with comparable modular, atx 3.0 / 12vhpwr, so those specs do not separate the two — focus on the differences below.
Bottom line: the PRIME TX-1300 Noctua is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Seasonic - FOCUS GX-850 wins
- No decisive advantages.
Why Seasonic - PRIME TX-1300 Noctua wins
- ▲Wattage — 52.94% more. 1300 W vs 850 W.
- ▲Warranty — 2.00 yrs more. 12 vs 10.
- ▲Efficiency: 80+ Titanium (vs 80+ Gold).
Spec comparison
Spec
| Spec | Seasonic - FOCUS GX-850 | Seasonic - PRIME TX-1300 Noctua |
|---|---|---|
| Wattage | 850 W | 1300 Wlead |
| Efficiency | 80+ Gold | 80+ Titaniumlead |
| Form factor | ATX | ATX |
Features
| Spec | Seasonic - FOCUS GX-850 | Seasonic - PRIME TX-1300 Noctua |
|---|---|---|
| Modular | full | full |
| ATX 3.0 / 12VHPWR | true | true |
| Warranty | 10 yrs | 12 yrslead |
Spec-level deep dives
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