Corsair
Corsair RM1000x Shift
1000 W · 80+ Gold · ATX 3.1
92
/ 100
From $229
VS
Corsair RM1000x Shift wins by 2
Seasonic
Seasonic Vertex GX-1000
1000 W · Gold
90
/ 100
From $199
Specdex verdict
Corsair RM1000x Shift takes it — here’s why.
In our weighted Specdex score, Corsair RM1000x Shift lands at 92 and Seasonic Vertex GX-1000 at 90. That puts Corsair RM1000x Shift ahead by 2 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 Vertex GX-1000 if…
- ✓Modular cabling on most
- ✓ATX 3.1 / 12V-2x6 support
- ✓10-year warranty on many
Corsair RM1000x Shift 92
vs 90 Seasonic Vertex GX-1000
Score breakdown
Corsair RM1000x Shift
92 efficiency 90
noise 94
cables 96
value 88
Seasonic Vertex GX-1000
90 efficiency 90
noise 86
cables 86
value 84
Specs side-by-side
| Spec | Corsair RM1000x Shift | Seasonic Vertex GX-1000 |
|---|---|---|
| Wattage | 1000 W | 1000 W |
| Efficiency | 80+ Gold | Gold |
| Standard | ATX 3.1 | — |
| Connectors | 1× 12V-2x6 (600W) | — |
| Fan | 135 mm FDB | — |
Corsair RM1000x Shift
Pros
- +ATX 3.1 + 12V-2x6
- +Side-mounted cables
- +Quiet zero-RPM
Cons
- −Bulky side depth
- −Price creep
- −Gold not Platinum
Seasonic Vertex GX-1000
Pros
- +Modular cabling on most
- +ATX 3.1 / 12V-2x6 support
- +10-year warranty on many
Cons
- −Bulky on higher wattages
- −Fan noise varies by load
- −Cable length may not fit some cases
FAQ: Corsair RM1000x Shift vs Seasonic Vertex GX-1000
Which is better, Corsair RM1000x Shift or Seasonic Vertex GX-1000? +
Corsair RM1000x Shift scores 92 on our weighted rubric — ahead by 2. 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 Vertex GX-1000 worth the price? +
At $199, Seasonic Vertex GX-1000 delivers a Specdex score of 90 — strongest in efficiency.
Does Corsair RM1000x Shift or Seasonic Vertex GX-1000 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.