Seasonic Vertex PX-1200
1200 W · 80+ Platinum · ATX 3.0
Seasonic PRIME TX-1300
1300W · 80+ Titanium · 12VHPWR
Dead heat — it comes down to priorities.
In our weighted Specdex score, Seasonic Vertex PX-1200 lands at 93 and Seasonic PRIME TX-1300 at 93. With scores tied, the decision hinges on which sub-scores matter most to you.
Pick Seasonic Vertex PX-1200 if…
- ✓Rock-solid ripple
- ✓Platinum efficiency
- ✓Long 12-year warranty
Pick Seasonic PRIME TX-1300 if…
- ✓80+ Titanium efficiency
- ✓12-year warranty
- ✓Pure-DC fan profile
Winner by scenario
Derived from the sub-score breakdown · not a separate testEfficiency
Seasonic PRIME TX-1300Compared on the efficiency sub-score
Seasonic PRIME TX-1300 leads on efficiency (100 vs 96).
Value for money
Seasonic Vertex PX-1200Specdex score per dollar at MSRP
Seasonic Vertex PX-1200 more score per dollar ($289 vs $359).
Score breakdown
Specs side-by-side
| Spec | Seasonic Vertex PX-1200 | Seasonic PRIME TX-1300 |
|---|---|---|
| Wattage | 1200 W | 1300W |
| Efficiency | 80+ Platinum | 80+ Titanium |
| Standard | ATX 3.0 | — |
| Connectors | 1× 16-pin 12VHPWR (600W) | — |
| Cooling | — | 135 mm fluid-dynamic-bearing fan |
| Modular | — | Fully modular |
| 12VHPWR | — | Native cable included |
| Warranty | — | 12 years |
Seasonic Vertex PX-1200
- +Rock-solid ripple
- +Platinum efficiency
- +Long 12-year warranty
- −Heavy at 2.6 kg
- −Expensive
- −Cables stiff
Seasonic PRIME TX-1300
- +80+ Titanium efficiency
- +12-year warranty
- +Pure-DC fan profile
- −Premium pricing
- −Heavier than Gold-rated equivalents
- −Cables stiff
FAQ: Seasonic Vertex PX-1200 vs Seasonic PRIME TX-1300
Which is better, Seasonic Vertex PX-1200 or Seasonic PRIME TX-1300? +
Both score 93 on our weighted rubric — tied. Your best pick depends on the sub-scores above.
Is Seasonic Vertex PX-1200 worth the price? +
At $289, Seasonic Vertex PX-1200 delivers a Specdex score of 93 — strongest in efficiency.
Is Seasonic PRIME TX-1300 worth the price? +
At $359, Seasonic PRIME TX-1300 delivers a Specdex score of 93 — strongest in efficiency.
Does Seasonic Vertex PX-1200 or Seasonic PRIME TX-1300 last longer? +
Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.
Which is better for efficiency, Seasonic Vertex PX-1200 or Seasonic PRIME TX-1300? +
Seasonic PRIME TX-1300 — leads on efficiency (100 vs 96). Compared on the efficiency sub-score.
Which is the better value, Seasonic Vertex PX-1200 or Seasonic PRIME TX-1300? +
Seasonic Vertex PX-1200 — more score per dollar ($289 vs $359). Specdex score per dollar at MSRP.