Head-to-head · Best 850w Power Supplies

Corsair HX850 vs EVGA SuperNOVA 850 G7

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

Corsair HX850 comes out ahead by a narrow margin (4.6 vs 4.4). The gap is mostly about fit for purpose — read the strengths below before deciding.

Higher ratedRanked #1 in Best 850w Power Supplies

Corsair HX850

4.6

The Corsair HX850 is a high-performance power supply that delivers excellent efficiency and silent operation, particularly at low loads thanks to its ZeroRPM mode. Tom's Hardware praised its ability to maintain full power at 46°C and noted its superior noise reduction compared to competitors like the EVGA 850 G3 and Seasonic FOCUS PLUS. KitGuru highlighted its 80 Plus Platinum certification, fully modular design, and robust build quality. However, reviewers noted some drawbacks including OCP issues at 5VSB and bulky cable configurations. This PSU is ideal for enthusiasts seeking reliable, quiet power delivery but may not suit users prioritizing minimal cable clutter.

Strengths

— Full power at 46°C ambient temperature
— 90% efficiency at real-world load conditions
— ZeroRPM mode for fanless operation at low loads

Watch-outs

— OCP at 5VSB
— Bulky ATX, EPS and PCIe cables

Buy at ebay.com Full review →

Ranked #3 in Best 850w Power Supplies

EVGA SuperNOVA 850 G7

4.4

The EVGA SuperNOVA 850 G7 delivers high performance in a compact form factor, according to Tom's Hardware and Hardware Busters reviews. It offers excellent efficiency and build quality while maintaining reliable operation under load. However, it lacks PCIe 5.0 support and suffers from high inrush currents. This PSU is ideal for gamers seeking a powerful yet space-saving solution, though those requiring latest-generation PCIe connectors may need to look elsewhere.

Strengths

— Full power at 47 degrees Celsius
— Top overall performance
— Good build quality

Watch-outs

— No PCIe 5.0 connectors
— High inrush currents

Buy at shi.com Full review →

Specs side-by-side

Spec	Corsair HX850	EVGA SuperNOVA 850 G7
Wattage	850W	850W
Efficiency	80 Plus Platinum	Cybenetics Platinum (89-91%), 80 PLUS Gold
Form Factor	ATX	ATX12V v2.52
Modularity	Fully Modular	Fully modular
Fan Size	135mm fluid dynamic bearing	120mm
Warranty	10 years	10-year
Connectors	2x EPS, 6x PCIe 6+2 pin, 16 SATA, 1x FDD, 1x ATX	2x EPS, 6x PCIe 6+2 pin, 9 SATA, 4x Molex, 1x FDD

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