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Seasonic Focus GX-850 — 850 W · Gold
Seasonic

Seasonic Focus GX-850

850 W · Gold

88
/ 100
From $149
VS
Corsair SF1000L wins by 3
Corsair SF1000L — 1000 W · Gold
Corsair

Corsair SF1000L

1000 W · Gold

91
/ 100
From $299
Specdex verdict

Corsair SF1000L takes it — here’s why.

In our weighted Specdex score, Seasonic Focus GX-850 lands at 88 and Corsair SF1000L at 91. That puts Corsair SF1000L ahead by 3 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 SF1000L if…

  • Modular cabling on most
  • ATX 3.1 / 12V-2x6 support
  • 10-year warranty on many
Seasonic Focus GX-850 88
vs
91 Corsair SF1000L

Score breakdown

Seasonic Focus GX-850
88
efficiency 88
noise 86
cables 86
value 84
Corsair SF1000L
91
efficiency 91
noise 86
cables 86
value 84

Specs side-by-side

Seasonic Focus GX-850 versus Corsair SF1000L — full spec comparison
Spec Seasonic Focus GX-850 Corsair SF1000L
Wattage
850 W
1000 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 SF1000L

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 SF1000L

Which is better, Seasonic Focus GX-850 or Corsair SF1000L? +

Corsair SF1000L scores 91 on our weighted rubric — ahead by 3. 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 SF1000L worth the price? +

At $299, Corsair SF1000L delivers a Specdex score of 91 — strongest in efficiency.

Does Seasonic Focus GX-850 or Corsair SF1000L 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.