Corsair
Corsair SF1000L
1000 W · Gold
91
/ 100
From $299
VS
Corsair RM1000x Shift wins by 1
Corsair
Corsair RM1000x Shift
1000 W · 80+ Gold · ATX 3.1
92
/ 100
From $229
Specdex verdict
Corsair RM1000x Shift takes it — here’s why.
In our weighted Specdex score, Corsair SF1000L lands at 91 and Corsair RM1000x Shift at 92. That puts Corsair RM1000x Shift ahead by 1 points — a narrow margin driven mostly by its strengths in the categories below.
Pick Corsair SF1000L if…
- ✓Modular cabling on most
- ✓ATX 3.1 / 12V-2x6 support
- ✓10-year warranty on many
Pick Corsair RM1000x Shift if…
- ✓ATX 3.1 + 12V-2x6
- ✓Side-mounted cables
- ✓Quiet zero-RPM
Corsair SF1000L 91
vs 92 Corsair RM1000x Shift
Score breakdown
Corsair SF1000L
91 efficiency 91
noise 86
cables 86
value 84
Corsair RM1000x Shift
92 efficiency 90
noise 94
cables 96
value 88
Specs side-by-side
| Spec | Corsair SF1000L | Corsair RM1000x Shift |
|---|---|---|
| Wattage | 1000 W | 1000 W |
| Efficiency | Gold | 80+ Gold |
| Standard | — | ATX 3.1 |
| Connectors | — | 1× 12V-2x6 (600W) |
| Fan | — | 135 mm FDB |
Corsair SF1000L
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
Corsair RM1000x Shift
Pros
- +ATX 3.1 + 12V-2x6
- +Side-mounted cables
- +Quiet zero-RPM
Cons
- −Bulky side depth
- −Price creep
- −Gold not Platinum
FAQ: Corsair SF1000L vs Corsair RM1000x Shift
Which is better, Corsair SF1000L or Corsair RM1000x Shift? +
Corsair RM1000x Shift scores 92 on our weighted rubric — ahead by 1. Your best pick depends on the sub-scores above.
Is Corsair SF1000L worth the price? +
At $299, Corsair SF1000L delivers a Specdex score of 91 — strongest in efficiency.
Is Corsair RM1000x Shift worth the price? +
At $229, Corsair RM1000x Shift delivers a Specdex score of 92 — strongest in cables.
Does Corsair SF1000L or Corsair RM1000x Shift 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.