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Corsair HX1000i — 1000 W · Platinum
Corsair

Corsair HX1000i

1000 W · Platinum

92
/ 100
From $279
VS
Seasonic Vertex PX-1200 wins by 1
Seasonic Vertex PX-1200 — 1200 W · 80+ Platinum · ATX 3.0
Seasonic

Seasonic Vertex PX-1200

1200 W · 80+ Platinum · ATX 3.0

93
/ 100
From $289
Specdex verdict

Seasonic Vertex PX-1200 takes it — here’s why.

In our weighted Specdex score, Corsair HX1000i lands at 92 and Seasonic Vertex PX-1200 at 93. That puts Seasonic Vertex PX-1200 ahead by 1 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 Seasonic Vertex PX-1200 if…

  • ✓Rock-solid ripple
  • ✓Platinum efficiency
  • ✓Long 12-year warranty
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Winner by scenario

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

Efficiency

Seasonic Vertex PX-1200

Compared on the efficiency sub-score

Seasonic Vertex PX-1200 leads on efficiency (96 vs 92).

Noise

Seasonic Vertex PX-1200

Compared on the noise sub-score

Seasonic Vertex PX-1200 leads on noise (92 vs 86).

Cables

Seasonic Vertex PX-1200

Compared on the cables sub-score

Seasonic Vertex PX-1200 leads on cables (90 vs 86).

Value for money

Tie

Specdex score per dollar at MSRP

Effectively tied — similar score-per-dollar at MSRP.

Corsair HX1000i 92
vs
93 Seasonic Vertex PX-1200

Score breakdown

Corsair HX1000i
92
efficiency 92
noise 86
cables 86
value 84
Seasonic Vertex PX-1200
93
efficiency 96
noise 92
cables 90
value 86

Specs side-by-side

Corsair HX1000i versus Seasonic Vertex PX-1200 — full spec comparison
Spec Corsair HX1000i Seasonic Vertex PX-1200
Wattage
1000 W
1200 W
Efficiency
Platinum
80+ Platinum
Standard
—
ATX 3.0
Connectors
—
1× 16-pin 12VHPWR (600W)

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

Seasonic Vertex PX-1200

Pros
  • +Rock-solid ripple
  • +Platinum efficiency
  • +Long 12-year warranty
Cons
  • −Heavy at 2.6 kg
  • −Expensive
  • −Cables stiff

FAQ: Corsair HX1000i vs Seasonic Vertex PX-1200

Which is better, Corsair HX1000i or Seasonic Vertex PX-1200? +

Seasonic Vertex PX-1200 scores 93 on our weighted rubric — ahead by 1. 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 Seasonic Vertex PX-1200 worth the price? +

At $289, Seasonic Vertex PX-1200 delivers a Specdex score of 93 — strongest in efficiency.

Does Corsair HX1000i or Seasonic Vertex PX-1200 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 HX1000i or Seasonic Vertex PX-1200? +

Seasonic Vertex PX-1200 — leads on efficiency (96 vs 92). Compared on the efficiency sub-score.

Which is better for noise, Corsair HX1000i or Seasonic Vertex PX-1200? +

Seasonic Vertex PX-1200 — leads on noise (92 vs 86). Compared on the noise sub-score.