Skip to main content
Thermaltake Toughpower GT 850W ATX 3.1 Standard Power Supply; 80 Plus Gold Efficiency; Smart Zero Fan; Native 450W PCIe 5.1 Connector; PS-TPT-0850FNFAGU-3; 5 Year Warranty
Thermaltake

Thermaltake Toughpower GT 850W ATX 3.1 Standard Power Supply; 80 Plus Gold Efficiency; Smart Zero Fan; Native 450W PCIe 5.1 Connector; PS-TPT-0850FNFAGU-3; 5 Year Warranty

Bottom line: The Thermaltake Toughpower GT 850W ATX 3.1 Standard Power Supply; 80 Plus ($89.99 on Amazon as of 2026-10-07): ATX 3.1 with native 450W PCIe 5.1 12+4-pin connector for modern GPUs; main trade-off: 850W ceiling limits headroom for future 500W-plus flagship GPU upgrades.

$89.99

As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →

Buy on Amazon — $89.99 Compare to similar power supplies

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ ATX 3.1 with native 450W PCIe 5.1 12+4-pin connector for modern GPUs
  • ✓ 80 PLUS Gold certified, up to 90% efficiency to cut heat and power draw
  • ✓ Smart Zero Fan keeps the 120mm hydraulic-bearing fan silent at low load
  • ✓ Fully modular low-profile flat black cables for tidy, airflow-friendly builds

Cons

  • ✗ 850W ceiling limits headroom for future 500W-plus flagship GPU upgrades
  • ✗ Gold rated, not Platinum or Titanium for the lowest-loss efficiency
  • ✗ Uses a hydraulic bearing fan, not the longer-life fluid-dynamic type
  • ✗ Zero-fan mode can let heat build during sustained heavy loads

Manufacturer description

The Toughpower GT Series is built to meet modern power demands, supporting the latest ATX 3.1 standards. Available in 750W and 850W models, it provides 80 PLUS Gold efficiency and includes a native PCIe Gen 5.1 12+4 pin connector for high-performance GPUs. With Smart Zero Fan technology and a 120mm hydraulic bearing fan, it ensures quiet operation and reliable power delivery. Backed by a 5-year warranty, it offers stable, efficient performance for demanding users. •P/N: PS-TPT-0850FNFAGU-3 •Watts: 850W •Max Output Capacity: 850W •Color: Black •Dimensions: 150mm(W)x86mm(H)x140mm(D) •PFC…

Related Products

Other products in this category you may like:

SpecPicks Verdict

SpecPicks scored Thermaltake Toughpower GT 850W ATX 3.1 Standard Power Supply; 80… using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. Thermaltake's power supplies lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for power supplies of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • ATX 3.1 and PCIe 5.1 Support: Fully compatible with Intel ATX 3.1 specifications, with native PCIe 12V-2x6 (12+4 pin) connectors for modern GPUs.
  • 80 PLUS Gold Efficiency: Provides up to 90% efficiency, reducing energy consumption and heat output during operation.
  • Smart Zero Fan Technology: Automatically adjusts fan speed based on load, minimizing noise during low-load operations.
  • Fully Modular Design: Includes low-profile flat black cables, making cable management easier and improving airflow inside your case.
  • High Amperage Single +12V Rail: Provides reliable and stable power delivery, optimized for high-end gaming and workstation builds.

Full Specifications

BrandThermaltake
Wattage850 watts
Model NameToughpoewr GT 850
Unit Count1 Count
Form FactorATX
Model NumberPS-TPT-0850FNFAGU-3
Connector TypeATX, Molex, PCI Express, SATA
Cooling MethodAir
Number of Fans1
Output Wattage850 watts
Item Dimensions5.9 x 3.4 x 5.5 inches
Mfr Part NumberPS-TPT-0850FNFAGU-3
Compatible DevicesPC
Power Supply DesignFull Modular
Fully Modular DesignIncludes low-profile flat black cables, making cable management easier and improving airflow inside your case.
Warranty Description5 Year Manufacturer
Maximum Input Voltage240 volts_of_alternating_current
Minimum Input Voltage100 volts_of_alternating_current
80 PLUS Gold EfficiencyProvides up to 90% efficiency, reducing energy consumption and heat output during operation.
Item dimensions L x W x H5.9 x 3.4 x 5.5 inches

Ready to buy?

Thermaltake Toughpower GT 850W ATX 3.1 Standard Power Supply; 80 Plus Gold Efficiency; Smart Zero Fan; Native 450W PCIe 5.1 Connector; PS-TPT-0850FNFAGU-3; 5 Year Warranty is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $89.99

*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.

Related Power Supplies

Keep exploring SpecPicks

Other buying guides

Browse the catalog

Editorial

More guides & deep dives from the SpecPicks archive

Browse all articles & guides →

More reviews from the SpecPicks archive

Browse all reviews →

Earliest SpecPicks reviews

Browse full archive →
Thermaltake Toughpower GT 850W ATX 3.1 Standard Power Supply; 80 Plus Gold Efficiency; Smart Zero Fan; Native 450W PCIe 5.1 Connector; PS-TPT-0850FNFAGU-3; 5 Year Warranty
$89.99
View on Amazon →