Skip to content
Specdex
Compare now
Corsair RM850x Shift — 850 W · Gold
Corsair

Corsair RM850x Shift

850 W · Gold

90
/ 100
From $179
VS
Corsair RM850x Shift wins by 5
Thermaltake Toughpower GF3 1200W — 1200 W · Gold
Thermaltake

Thermaltake Toughpower GF3 1200W

1200 W · Gold

85
/ 100
From $229
Specdex verdict

Corsair RM850x Shift takes it — here’s why.

In our weighted Specdex score, Corsair RM850x Shift lands at 90 and Thermaltake Toughpower GF3 1200W at 85. That puts Corsair RM850x Shift ahead by 5 points — a decisive margin driven mostly by its strengths in the categories below.

Pick Corsair RM850x Shift if…

  • ✓Modular cabling on most
  • ✓ATX 3.1 / 12V-2x6 support
  • ✓10-year warranty on many

Pick Thermaltake Toughpower GF3 1200W if…

  • ✓Modular cabling on most
  • ✓ATX 3.1 / 12V-2x6 support
  • ✓10-year warranty on many
Share this comparison: Share to Reddit X / Twitter

Winner by scenario

Derived from the sub-score breakdown · not a separate test

Efficiency

Corsair RM850x Shift

Compared on the efficiency sub-score

Corsair RM850x Shift leads on efficiency (90 vs 85).

Noise

Tie

Compared on the noise sub-score

Effectively tied — neither pulls a 2-point weighted lead.

Cables

Tie

Compared on the cables sub-score

Effectively tied — neither pulls a 2-point weighted lead.

Value for money

Corsair RM850x Shift

Specdex score per dollar at MSRP

Corsair RM850x Shift more score per dollar ($179 vs $229).

Corsair RM850x Shift 90
vs
85 Thermaltake Toughpower GF3 1200W

Score breakdown

Corsair RM850x Shift
90
efficiency 90
noise 86
cables 86
value 84
Thermaltake Toughpower GF3 1200W
85
efficiency 85
noise 86
cables 86
value 84

Specs side-by-side

Corsair RM850x Shift versus Thermaltake Toughpower GF3 1200W — full spec comparison
Spec Corsair RM850x Shift Thermaltake Toughpower GF3 1200W
Wattage
850 W
1200 W
Efficiency
Gold
Gold

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

Thermaltake Toughpower GF3 1200W

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 RM850x Shift vs Thermaltake Toughpower GF3 1200W

Which is better, Corsair RM850x Shift or Thermaltake Toughpower GF3 1200W? +

Corsair RM850x Shift scores 90 on our weighted rubric — ahead by 5. Your best pick depends on the sub-scores above.

Is Corsair RM850x Shift worth the price? +

At $179, Corsair RM850x Shift delivers a Specdex score of 90 — strongest in efficiency.

Is Thermaltake Toughpower GF3 1200W worth the price? +

At $229, Thermaltake Toughpower GF3 1200W delivers a Specdex score of 85 — strongest in noise.

Does Corsair RM850x Shift or Thermaltake Toughpower GF3 1200W 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.

Which is better for efficiency, Corsair RM850x Shift or Thermaltake Toughpower GF3 1200W? +

Corsair RM850x Shift — leads on efficiency (90 vs 85). Compared on the efficiency sub-score.

Which is the better value, Corsair RM850x Shift or Thermaltake Toughpower GF3 1200W? +

Corsair RM850x Shift — more score per dollar ($179 vs $229). Specdex score per dollar at MSRP.