Seasonic
Seasonic Focus GX-850
850 W · Gold
88
/ 100
From $149
VS
Corsair RM850x Shift wins by 2
Corsair
Corsair RM850x Shift
850 W · Gold
90
/ 100
From $179
Specdex verdict
Corsair RM850x Shift takes it — here’s why.
In our weighted Specdex score, Seasonic Focus GX-850 lands at 88 and Corsair RM850x Shift at 90. That puts Corsair RM850x Shift ahead by 2 points — a narrow margin driven mostly by its strengths in the categories below.
Pick Seasonic Focus GX-850 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
Seasonic Focus GX-850 88
vs 90 Corsair RM850x Shift
Score breakdown
Seasonic Focus GX-850
88 efficiency 88
noise 86
cables 86
value 84
Corsair RM850x Shift
90 efficiency 90
noise 86
cables 86
value 84
Specs side-by-side
| Spec | Seasonic Focus GX-850 | Corsair RM850x Shift |
|---|---|---|
| Wattage | 850 W | 850 W |
| Efficiency | Gold | Gold |
Seasonic Focus GX-850
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: Seasonic Focus GX-850 vs Corsair RM850x Shift
Which is better, Seasonic Focus GX-850 or Corsair RM850x Shift? +
Corsair RM850x Shift scores 90 on our weighted rubric — ahead by 2. Your best pick depends on the sub-scores above.
Is Seasonic Focus GX-850 worth the price? +
At $149, Seasonic Focus GX-850 delivers a Specdex score of 88 — 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 Seasonic Focus GX-850 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.