Head-to-head · Best 850w Power Supplies

EVGA SuperNOVA 850 G6 vs Thermaltake Toughpower GF3 850W

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Thermaltake Toughpower GF3 850W comes out ahead by a narrow margin (4.1 vs 4.3). The gap is mostly about fit for purpose — read the strengths below before deciding.

Ranked #5 in Best 850w Power Supplies

EVGA SuperNOVA 850 G6

4.1

$269.99as of Jul 8

The EVGA SuperNOVA 850 G6 is a solid 850W power supply that delivers good performance and build quality, according to Tom's Hardware. It features full modularity, a compact design, and strong voltage regulation, though reviewers noted issues with fan behavior and efficiency at typical loads. While it offers a 10-year warranty and is well-suited for high-end builds, it faces stiff competition in its class.

Strengths

— Full power at 47 degrees Celsius
— Good build quality
— Tight load regulation at 12V

Watch-outs

— Fan speed profile could be smoother
— Efficiency at normal and light loads could be higher
— High inrush current with 230V

$269.99 · Check Price on Amazon Full review →

Higher ratedRanked #4 in Best 850w Power Supplies

Thermaltake Toughpower GF3 850W

4.3

$109.99as of Jul 8

The Thermaltake Toughpower GF A3 850W is a Platinum-certified ATX v3.0 and PCIe 5.0 compatible power supply with a 12VHPWR connector rated at 450W. Hardware Busters praised its efficiency, quiet operation, and fully modular design, though noted the use of sleeve bearing fans instead of fluid dynamic bearings. Tom's Hardware called it one of the first ATX v3.0 PSUs with decent performance and quiet operation, though it lacks peak efficiency and has high inrush current at 230V. This PSU is ideal for users seeking reliable v3.0 compatibility with a 10-year warranty, but those wanting the absolute best in performance or fan quality may want to consider alternatives.

Strengths

— ATX v3.0 and PCIe 5.0 compatible with 12VHPWR connector rated at 450W
— Fully modular design with 120mm sleeve bearing fan for quiet operation
— Semi-passive operation available and selectable

Watch-outs

— Uses sleeve bearing fan instead of fluid dynamic bearing fan like higher-tier models
— Average transient response at 12V rail
— High inrush current with 230V input

$109.99 · Check Price on Amazon Full review →

Specs side-by-side

Spec	EVGA SuperNOVA 850 G6	Thermaltake Toughpower GF3 850W
Wattage	850 W	850W
Efficiency	91% or higher (under typical load)	Platinum (89-91%)
Form Factor	ATX Form Factor	ATX
Modularity	Fully modular	Fully modular
Fan Size	1 x 135 mm	120mm Sleeve Bearing Fan
Warranty	10-year warranty	10 years
Connectors	—	PCIe 6+2Pin X 4, PCIe 12+4Pin X 1

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