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Head-to-head · Best 850w Power Supplies

Corsair RM850e 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.

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The short answer

Thermaltake Toughpower GF3 850W comes out ahead by a narrow margin (4.2 vs 4.1). Thermaltake Toughpower GF3 850W is best for: Users prioritizing efficiency and warranty over noise control. Read the strengths below before deciding.

Corsair RM850e
Ranked #3 in Best 850w Power Supplies
Corsair RM850e
2 sources$115.99as of Oct 21

The Corsair RM850e delivers reliable performance as part of Corsair's new RM series, offering fully modular cabling and native 12V-26 connectors for modern GPU support. Reviewers noted its efficient Cybenetics Gold-Certified design and quiet operation with zero RPM fan mode. While it provides solid power delivery and build quality, it trails competitors in warranty length, though KitGuru found only a £10 UK price difference over the 750W model. This PSU suits enthusiasts seeking a balance of efficiency and reliability without the premium warranty of flagship models.

Strengths
  • — Fully modular cabling allows for clean and customizable builds
  • — Native 12V-26 connector supports latest high-end graphics cards without adapters
  • — Efficient Cybenetics Gold-Certified design delivers up to 90% efficiency
Watch-outs
  • — KitGuru notes the 7-year warranty falls short of leading competitors' 12-year warranties
$115.99 · Check Price on AmazonFull review →
Thermaltake Toughpower GF3 850W
Higher ratedRanked #4 in Best 850w Power Supplies
Thermaltake Toughpower GF3 850W
1 source$123.99as of Oct 11

The Thermaltake Toughpower GF A3 850W is a high-end PSU with Platinum efficiency certification and full ATX v3.0/PCIe 5.0 compatibility. It features a 160mm depth design, fully modular cabling, and semi-passive operation. It offers excellent efficiency and a decade-long warranty, and Tom's Hardware lists a 135mm fluid dynamic bearing fan.

Strengths
  • — Platinum certified efficiency rating of 89-91% at 115V
  • — 10-year warranty coverage, per Tom's Hardware
  • — Supports ATX v3.0 and PCIe 5.0 standards with 12VHPWR connector
Watch-outs
  • — Fan becomes more noticeable at around 70% load
$123.99 · Check Price on AmazonFull review →

How they stack up

Corsair RM850e

The Corsair RM850e offers a more affordable entry point into the RM series compared to the RM850x, but lacks the 10-year warranty and fluid dynamic bearing fan. It's less efficient than the EVGA SuperNOVA 850 G7 and doesn't match the premium build quality of the be quiet! Dark Power Pro 12 850W, though it does provide native 12V-26 support like the latter.

Thermaltake Toughpower GF3 850W

The Thermaltake Toughpower GF3 850W offers Platinum efficiency and a 10-year warranty, and, like the Corsair RM850x and EVGA SuperNOVA 850 G7, it uses a fluid dynamic bearing fan (135mm, per Tom's Hardware). It's less efficient than the be quiet! Dark Power Pro 12 850W and lacks the premium features of the ASUS ROG Strix 850G Aura.

Specs side-by-side

SpecCorsair RM850eThermaltake Toughpower GF3 850W
Wattage850W850W
Efficiency80 Plus Gold (up to 90%)Platinum (89-91%)
ModularityFull ModularFully modular
Fan Type120mm rifle bearing with zero RPM mode135mm Fluid Dynamic Bearing
Warranty7 years10 years
ConnectorsFully modular with 12V-26PCIe 6+2Pin X 4, PCIe 12+4Pin X 1
Dimensions140 x 150 x 86 mm150mm(W) x 86mm(H) x 160mm(D)
Form FactorATX 3.1ATX 3.1
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