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Head-to-head · Best 850w Power Supplies

EVGA SuperNOVA 850 G7 vs Seasonic Focus PX-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

Seasonic Focus PX-850 comes out ahead by a clear margin (4.4 vs 4.9). The gap is mostly about fit for purpose — read the strengths below before deciding.

EVGA SuperNOVA 850 G7
Ranked #3 in Best 850w Power Supplies
EVGA SuperNOVA 850 G7
4 sources2 derived

Tom's Hardware and Hardware Busters both rate the EVGA SuperNOVA 850 G7 highly for the performance it packs into a compact body. Efficiency and build quality hold up, and it stays reliable under load. What it lacks is PCIe 5.0 support, and reviewers measured high inrush currents. Gamers who need power in a space-saving footprint should buy; anyone who needs latest-generation PCIe connectors should 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 walmart.comFull review →
Seasonic Focus PX-850
Higher ratedRanked #1 in Best 850w Power Supplies
Seasonic Focus PX-850
3 sources$413as of Aug 1

The Seasonic Focus PX-850 is a Platinum-rated 850W unit that runs efficiently and holds up over time. RelaxedTech praised the fully modular design, the high-grade Japanese capacitors, and the Fluid Dynamic Bearing fan with customizable cooling modes. A single +12V rail handles 70A, and the 10-year warranty puts it ahead of most competitors. At around $140 the price is competitive but still above budget alternatives. Enthusiasts and professionals who want premium build quality and long-term reliability should buy; budget-conscious users can find better value.

Strengths
  • — 80+ Platinum efficiency rating with 92% efficiency at 50% load
  • — Fully modular design with flat black cables for improved airflow
  • — Fluid Dynamic Bearing (FDB) fan with three operational stages: Fanless, Silent, and Cooling Mode
Watch-outs
  • — Price is still higher than budget Gold-class alternatives, even though it undercuts rival Platinum units by $20-$40
  • — Small 140mm footprint may not fit all cases with tight space constraints
$413 · Buy at newegg.caFull 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.

Specs side-by-side

SpecEVGA SuperNOVA 850 G7Seasonic Focus PX-850
Wattage850W850W
EfficiencyCybenetics Platinum (89-91%), 80 PLUS Gold80+ Platinum
Form FactorATX12V v2.52Intel ATX 12 V
ModularityFully modularFully Modular
Fan Size120mm120mm FDB
Warranty10-year10 Years
Compliance80 PLUS GoldEnergy Star, RoHS, WEEE, ErP Lot 6, REACH
Connectors2x EPS, 6x PCIe 6+2 pin, 9 SATA, 4x Molex, 1x FDD20+4Pin, 2 x 4/8 Pin CPU, 6 x 6+2 pin PCIe, 10 x SATA
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