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Thermaltake Toughpower GX3 850W; ATX 3.1; Native PCIe 5.1 12V-2x6; Flat Cables; 120mm Fan; 80 Plus Gold Certified; 5 Year Warranty; Black; PS-TPD-0850NNFAGU-3
Thermaltake

Thermaltake Toughpower GX3 850W; ATX 3.1; Native PCIe 5.1 12V-2x6; Flat Cables; 120mm Fan; 80 Plus Gold Certified; 5 Year Warranty; Black; PS-TPD-0850NNFAGU-3

Bottom line: The Thermaltake Toughpower GX3 850W; ATX 3.1; Native PCIe 5.1 12V-2x6;: Native PCIe 5.1 12V-2x6 connector powers current GPUs without adapters; main trade-off: non-modular design means every unused cable stays in the case.

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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.

Pros & Cons

Pros

  • ✓ Native PCIe 5.1 12V-2x6 connector powers current GPUs without adapters
  • ✓ Full ATX 3.1 compliance handles modern transient power spikes
  • ✓ 80 PLUS Gold efficiency plus C6/C7 low-power state support
  • ✓ 120mm fluid dynamic bearing fan runs quiet and lasts longer than sleeve bearings

Cons

  • ✗ Non-modular design means every unused cable stays in the case
  • ✗ Flat sleeved cables are fixed-length, complicating large or reverse-layout builds
  • ✗ Single 12V-2x6 connector limits you to one high-draw GPU
  • ✗ No specified fan-stop or zero-RPM mode in the product details

Manufacturer description

Toughpower GX3 series is 80 PLUS Gold certified non-modular PSU. The GX3 series is compatible with Intel’s ATX 3.1 specifications. Designed with a native PCIe Gen 5.1 connector, it can power up next-gen technology with one new 12VHPWR cable. Featuring a 120mm Fluid Dynamic Bearing Fan to keep friction at really low levels. To protect the hardware, GX3 is built with industry grade protections. Non modular soft black cables come with sleeve cabling design to make cable installation an easy task while powering the system at an advantageous voltage. •P/N: PS-TPD-0850NNFAGU-3 •MODEL…

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SpecPicks Verdict

SpecPicks scored Thermaltake Toughpower GX3 850W; ATX 3.1; Native PCIe 5.1 12V-2x6… 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

  • Power Up the Next Generation Hardware with PCIe Gen. 5 ready GX3 850W
  • Fully Compatible with Intel ATX 3.1 Standards
  • Ultra Quiet 120mm Fluid Dynamic Bearing Fan
  • Built-in Industrial Grade Protection
  • 80 PLUS Gold Certified and C6/C7 States Ready

Full Specifications

BrandThermaltake
Wattage850 watts
Fan Size12 centimeters
Model NameGX3
Unit Count1 Count
Form FactorATX
Model NumberPS-TPD-0850NNFAGU-3
Connector TypeATX, Molex, PCI Express, SATA
Cooling MethodAir
Number of Fans1
Output Wattage850
Item Dimensions5.9 x 5.5 x 3.4 inches
Mfr Part NumberPS-TPD-0850NNFAGU-3
Number of Items1
Number of Packs1
Compatible DevicesPersonal Computer
Power Supply DesignNon-Modular
Warranty Description5 Year Manufacturer
Maximum Input Voltage240 volts_of_alternating_current
Minimum Input Voltage115 volts

Ready to buy?

Thermaltake Toughpower GX3 850W; ATX 3.1; Native PCIe 5.1 12V-2x6; Flat Cables; 120mm Fan; 80 Plus Gold Certified; 5 Year Warranty; Black; PS-TPD-0850NNFAGU-3 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.

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Thermaltake Toughpower GX3 850W; ATX 3.1; Native PCIe 5.1 12V-2x6; Flat Cables; 120mm Fan; 80 Plus Gold Certified; 5 Year Warranty; Black; PS-TPD-0850NNFAGU-3
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