Corsair RM1000x Shift
1000 W · 80+ Gold · ATX 3.1
Seasonic PRIME TX-1300
1300W · 80+ Titanium · 12VHPWR
Seasonic PRIME TX-1300 takes it — here’s why.
In our weighted Specdex score, Corsair RM1000x Shift lands at 92 and Seasonic PRIME TX-1300 at 93. That puts Seasonic PRIME TX-1300 ahead by 1 points — a narrow margin driven mostly by its strengths in the categories below.
Pick Corsair RM1000x Shift if…
- ✓ATX 3.1 + 12V-2x6
- ✓Side-mounted cables
- ✓Quiet zero-RPM
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 90).
Value for money
Corsair RM1000x ShiftSpecdex score per dollar at MSRP
Corsair RM1000x Shift more score per dollar ($229 vs $359).
Score breakdown
Specs side-by-side
| Spec | Corsair RM1000x Shift | Seasonic PRIME TX-1300 |
|---|---|---|
| Wattage | 1000 W | 1300W |
| Efficiency | 80+ Gold | 80+ Titanium |
| Standard | ATX 3.1 | — |
| Connectors | 1× 12V-2x6 (600W) | — |
| Fan | 135 mm FDB | — |
| Cooling | — | 135 mm fluid-dynamic-bearing fan |
| Modular | — | Fully modular |
| 12VHPWR | — | Native cable included |
| Warranty | — | 12 years |
Corsair RM1000x Shift
- +ATX 3.1 + 12V-2x6
- +Side-mounted cables
- +Quiet zero-RPM
- −Bulky side depth
- −Price creep
- −Gold not Platinum
Seasonic PRIME TX-1300
- +80+ Titanium efficiency
- +12-year warranty
- +Pure-DC fan profile
- −Premium pricing
- −Heavier than Gold-rated equivalents
- −Cables stiff
FAQ: Corsair RM1000x Shift vs Seasonic PRIME TX-1300
Which is better, Corsair RM1000x Shift or Seasonic PRIME TX-1300? +
Seasonic PRIME TX-1300 scores 93 on our weighted rubric — ahead by 1. Your best pick depends on the sub-scores above.
Is Corsair RM1000x Shift worth the price? +
At $229, Corsair RM1000x Shift delivers a Specdex score of 92 — strongest in cables.
Is Seasonic PRIME TX-1300 worth the price? +
At $359, Seasonic PRIME TX-1300 delivers a Specdex score of 93 — strongest in efficiency.
Does Corsair RM1000x Shift 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, Corsair RM1000x Shift or Seasonic PRIME TX-1300? +
Seasonic PRIME TX-1300 — leads on efficiency (100 vs 90). Compared on the efficiency sub-score.
Which is the better value, Corsair RM1000x Shift or Seasonic PRIME TX-1300? +
Corsair RM1000x Shift — more score per dollar ($229 vs $359). Specdex score per dollar at MSRP.