Head-to-head · Best 850w Power Supplies

EVGA SuperNOVA 850 G7 vs Seasonic Focus GX-850

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

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The short answer

EVGA SuperNOVA 850 G7 comes out ahead by a clear margin (4.5 vs 3.9). The gap is mostly about Gaming enthusiasts seeking high-efficiency and reliability — read the strengths below before deciding.

Higher ratedRanked #1 in Best 850w Power Supplies

EVGA SuperNOVA 850 G7

4.5

5 sources1 derived

Tom's Hardware reviewed the EVGA SuperNOVA 850 G7 as an 80 Plus Gold certified power supply delivering 92% efficiency or higher under typical loads. The unit features 100% Japanese capacitors, full modularity for improved airflow, and a fluid dynamic bearing fan with Eco mode for quiet operation and longevity. EVGA backs it with a 10-year limited warranty, positioning it as a reliable choice for gaming rigs, content creation workstations, or general builds requiring stable power delivery. This PSU is ideal for users seeking high-quality, efficient power with extended warranty coverage.

Strengths

— 80 Plus Gold certified with 92% efficiency or higher under typical loads
— 100% Japanese capacitors for top-notch reliability and performance
— Fully modular design for improved airflow and reduced cable clutter

Watch-outs

Check Price on Amazon Full review →

Ranked #6 in Best 850w Power Supplies

Seasonic Focus GX-850

3.9

4 sources1 derived$159.99as of Sep 15

The Seasonic Focus GX-850 is a compact, fully modular 850W power supply designed for modern systems with ATX v3.1 and PCIe 5.1 support. It features a 10-year warranty and efficient operation with 80+ Gold certification. However, some users have reported fan noise issues, particularly under light load gaming conditions. This PSU is ideal for mid-tower builds and high-performance systems requiring reliable power delivery.

Strengths

— Fully modular design with 80+ Gold efficiency
— Compact dimensions (140mm depth) suitable for mid-towers
— 10-year warranty support

Watch-outs

— Fan noise reported as excessive under light load
— May be too loud during GPU-intensive tasks

$159.99 · Check Price on Amazon Full review →

Derived means the reviewer published no score, so one was inferred from their written verdict. Everything else is a number the publisher printed. How we rank.

How they stack up

EVGA SuperNOVA 850 G7

The EVGA SuperNOVA 850 G7 outperforms the Corsair RM850x with 100% Japanese capacitors and a more advanced Eco mode, while also offering better efficiency ratings. Unlike the Seasonic Focus GX-850, it avoids fan noise issues and provides a more reliable build quality, though it lacks the 10-year warranty of the Corsair RM850x.

Seasonic Focus GX-850

The Seasonic Focus GX-850 is more compact than the Corsair RM850x but suffers from excessive fan noise under light loads, unlike the Corsair's fluid dynamic bearing fan. It matches the EVGA SuperNOVA 850 G7 in 10-year warranty and efficiency, but lacks the latter's Japanese capacitors and superior fan control features.

Specs side-by-side

Spec	EVGA SuperNOVA 850 G7	Seasonic Focus GX-850
Wattage	850W	850W
Efficiency	80 Plus Gold	80+ Gold
Modularity	Fully Modular	Fully modular
Form Factor	ATX12V v2.52	Compact
Fan Type	Fluid Dynamic Bearing	135mm Fluid Dynamic Bearing Fan
Warranty	10 years	10-year
Dimensions	150 x 85 x 130mm	150 mm x 85 mm x 140mm
Connectors	2x EPS, 6x PCIe 6+2 pin, 9 SATA, 4x 4-pin Molex, 1x FDD adapter	2x EPS, 3x PCIe 6+2 pin, 1x PCIe 12+4 pin, 8x SATA, 3x 4-pin Molex

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