Corsair
Corsair HX1000i
1000 W · Platinum
92
/ 100
From $279
VS
Corsair HX1000i wins by 2
Corsair
Corsair RM850x Shift
850 W · Gold
90
/ 100
From $179
Specdex verdict
Corsair HX1000i takes it — here’s why.
In our weighted Specdex score, Corsair HX1000i lands at 92 and Corsair RM850x Shift at 90. That puts Corsair HX1000i ahead by 2 points — a narrow margin driven mostly by its strengths in the categories below.
Pick Corsair HX1000i if…
- ✓Modular cabling on most
- ✓ATX 3.1 / 12V-2x6 support
- ✓10-year warranty on many
Pick Corsair RM850x Shift if…
- ✓Modular cabling on most
- ✓ATX 3.1 / 12V-2x6 support
- ✓10-year warranty on many
Corsair HX1000i 92
vs 90 Corsair RM850x Shift
Score breakdown
Corsair HX1000i
92 efficiency 92
noise 86
cables 86
value 84
Corsair RM850x Shift
90 efficiency 90
noise 86
cables 86
value 84
Specs side-by-side
| Spec | Corsair HX1000i | Corsair RM850x Shift |
|---|---|---|
| Wattage | 1000 W | 850 W |
| Efficiency | Platinum | Gold |
Corsair HX1000i
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 RM850x Shift
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 HX1000i vs Corsair RM850x Shift
Which is better, Corsair HX1000i or Corsair RM850x Shift? +
Corsair HX1000i scores 92 on our weighted rubric — ahead by 2. Your best pick depends on the sub-scores above.
Is Corsair HX1000i worth the price? +
At $279, Corsair HX1000i delivers a Specdex score of 92 — strongest in efficiency.
Is Corsair RM850x Shift worth the price? +
At $179, Corsair RM850x Shift delivers a Specdex score of 90 — strongest in efficiency.
Does Corsair HX1000i or Corsair RM850x 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.