Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Corsair - HX1500i (2023) | Seasonic - PRIME TX-1300 |
|---|---|---|
| Wattage | 1500 W | 1300 W |
| Warranty | 10 yrs | 12 yrs |
| Efficiency | 80+ Platinum | 80+ Titanium |
Between the HX1500i (2023) and PRIME TX-1300, the HX1500i (2023) comes out ahead in wattage, while the PRIME TX-1300 wins on warranty / efficiency. Overall, the HX1500i (2023) scores 91 and the PRIME TX-1300 scores 91.5 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (91 vs 91.5). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the HX1500i (2023) if you care most about wattage. The biggest gaps in its favor are wattage. The single most decisive one: Wattage — 15.38% more. 1500 W vs 1300 W.
Pick the PRIME TX-1300 if you care most about warranty / efficiency. Its strongest claims are warranty, efficiency. The single most decisive one: Warranty — 2.00 yrs more. 12 vs 10.
Both ship with comparable modular, atx 3.0 / 12vhpwr, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Corsair - HX1500i (2023) or Seasonic - PRIME TX-1300?
Seasonic - PRIME TX-1300 leads the current Mars Score by 0.5 points.The more useful decision is the trade-off behind that result: compare wattage, efficiency against the way you will actually use the product.
Choose Corsair - HX1500i (2023) if…
Corsair - HX1500i (2023) has the measurable edge on wattage w.
Choose Seasonic - PRIME TX-1300 if…
Seasonic - PRIME TX-1300 has the measurable edge on warranty years, efficiency.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Corsair - HX1500i (2023) wins
- ▲Wattage — 15.38% more. 1500 W vs 1300 W.
Why Seasonic - PRIME TX-1300 wins
- ▲Warranty — 2.00 yrs more. 12 vs 10.
- ▲Efficiency: 80+ Titanium (vs 80+ Platinum).
Spec comparison
Spec
| Spec | Corsair - HX1500i (2023) | Seasonic - PRIME TX-1300 |
|---|---|---|
| Wattage | 1500 Wlead | 1300 W |
| Efficiency | 80+ Platinum | 80+ Titaniumlead |
| Form factor | ATX | ATX |
Features
| Spec | Corsair - HX1500i (2023) | Seasonic - PRIME TX-1300 |
|---|---|---|
| Modular | full | full |
| Average noise (Cybenetics) | 27.55 dB(A) | 11.02 dB(A)lead |
| ATX 3.0 / 12VHPWR | true | true |
| Warranty | 10 yrs | 12 yrslead |