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Seasonic Vertex GX-1000 — 1000 W · Gold
Seasonic

Seasonic Vertex GX-1000

1000 W · Gold

90
/ 100
From $199
VS
Corsair RM850x Shift — 850 W · Gold
Corsair

Corsair RM850x Shift

850 W · Gold

90
/ 100
From $179
Specdex verdict

Dead heat — it comes down to priorities.

In our weighted Specdex score, Seasonic Vertex GX-1000 lands at 90 and Corsair RM850x Shift at 90. With scores tied, the decision hinges on which sub-scores matter most to you.

Pick Seasonic Vertex GX-1000 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 Vertex GX-1000 90
vs
90 Corsair RM850x Shift

Score breakdown

Seasonic Vertex GX-1000
90
efficiency 90
noise 86
cables 86
value 84
Corsair RM850x Shift
90
efficiency 90
noise 86
cables 86
value 84

Specs side-by-side

Seasonic Vertex GX-1000 versus Corsair RM850x Shift — full spec comparison
Spec Seasonic Vertex GX-1000 Corsair RM850x Shift
Wattage
1000 W
850 W
Efficiency
Gold
Gold

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

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 Vertex GX-1000 vs Corsair RM850x Shift

Which is better, Seasonic Vertex GX-1000 or Corsair RM850x Shift? +

Both score 90 on our weighted rubric — tied. Your best pick depends on the sub-scores above.

Is Seasonic Vertex GX-1000 worth the price? +

At $199, Seasonic Vertex GX-1000 delivers a Specdex score of 90 — 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 Vertex GX-1000 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.