Overview

  • 80 PLUS Gold Efficiency and ATX 3.1 Compliance
    The Toughpower GT Series complies with the latest ATX 3.1 standards, delivering up to 90% efficiency under real-world conditions. This ensures stable power for modern systems, reducing energy consumption and heat output for extended PSU lifespan.
  • Fully Modular Design
    With fully modular low-profile flat cables, users can install only the cables they need, reducing clutter and improving airflow inside the case, which helps with cooling.
  • Native PCIe 5.1 Support
    The PSU comes equipped with a native PCIe Gen 5.1 connector, including a 12V-2×6 (12+4 pin) cable, making it compatible with the latest graphics cards and ensuring high performance.
  • Smart Zero Fan with Quiet Operation
    Equipped with a 120mm hydraulic bearing fan, the Smart Zero Fan stays off during low loads for silent operation and activates only when needed, providing quiet yet efficient cooling for your system.
  • High Amperage Single +12V Rail
    The single +12V rail design delivers stable and continuous power to high-end GPUs and CPUs, ensuring reliable performance under heavy workloads.
  • DC-DC and LLC Circuit Design
    Advanced DC-DC and LLC circuits provide precise voltage regulation and stable power output, minimizing voltage fluctuations and improving overall system reliability.
  • Comprehensive Protection Features
    The PSU is equipped with multiple protection mechanisms, including OCP (Over Current Protection), OVP (Over Voltage Protection), UVP (Under Voltage Protection), OPP (Over Power Protection), OTP (Over Temperature Protection), and SCP (Short Circuit Protection).
  • ErP and Energy Star Ready
    Fully compliant with Energy Star 5.0 and ErP Lot 6 standards, the Toughpower GT minimizes energy consumption in standby mode, making it eco-friendly and cost-efficient.
  • Compact Size and Easy Installation
    With compact dimensions of 150mm x 86mm x 140mm, this PSU fits easily in a wide range of cases, offering flexible installation options in both standard and compact builds.
  • 5-Year Warranty for Peace of Mind
    Backed by a 5-year warranty, the Toughpower GT series provides long-term reliability and support for users seeking stability and performance.

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Specifications

Capacity & configuration

Cooling Fan Type
12cm Hydraulic bearing fan

Dimensions & weight

Product Name
Toughpower GT 850W 80+ Gold ATX 3.1 Power Supply
Product Height
86 millimeters
Product Width
150 millimeters
Product Length
140 millimeters
Product Weight
70.4 ounces

Features

Brand
Thermaltake
Color
Black
Modular
Fully modular
Energy Efficiency
80 PLUS Gold
ATX Connector
24pin Main connector (550mm) x 1
PCIe Connector
PCI-E 12+4Pin connectors (600mm) x 1. 4 x PCI-E 6+2Pin connectors (600mm + 150mm) x 2
Peripheral Connector
4 x Peripheral connectors (400mm + 150mm + 150mm + 150mm) x 1
SATA Connector
6 x SATA connectors (450mm + 150mm + 150mm) x 2
EPS12V Connector
2 x ATX 12V 4+4Pin (700mm) x 2
PCI Express Version
PCI Express 5.0
Form Factor
ATX
Cooling System
Air
Number of Fans Included
1
UPC
841163097465, 841163097397, 840480304133

Power & warranty

Wattage
850 watts, 750 watts, 1200 watts, 1000 watts
Model Number
PS-TPT-0850FNFAGU-3
Power Cord Included
Yes
Warranty - Parts
5 years
Warranty - Labor
5 Years

Warranty & protection

Included manufacturer warranty

See manufacturer documentation.

Register your product with the manufacturer within 30 days of delivery.

Warranty service

Manufacturer warranty claims are handled by the manufacturer. We are happy to help you find the right contact: (888) 419-6820.

Customer reviews

Write a review
DerekESep 26, 2026 · Verified purchase ★★★★★

Toughpower GT 850W - This is a great powersupply for any build, it is so quiet and powerful, doesn't even strain when I put a huge work load on it. Would definitely recommend!!!

CodyMay 23, 2026 · Verified purchase ★★☆☆☆

Best Buy has the worst shipping - The product itself is fine enough. The product arrived in box too big for the item box. No padding in the package whatsoever. I’m talking a HUGE box for the power supply. No idea who messed that up but it also shipped from across the country and took longer than expected. On top of poor packaging. Completely ridiculous. Customer support did nothing as well. I recommend buying from microcenter. Save yourself the frustration and don’t order from Best Buy.

CoryfacehammerFeb 20, 2026 · Verified purchase ★★★★★

Power supply - Great product, love the price and modularity. Packaged nicely.

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Questions & answers

Ask a question

Email [email protected] or call (888) 419-6820 during business hours.

Free U.S. shippingOn every order. Leaves our store in 1–2 business days, arrives in 3–5 business days.
Free returns for 30 daysNo restocking fee. We email you a prepaid return label.
We can install it tooOptional in-home delivery, installation and haul-away on large appliances.
Talk to our team(888) 419-6820 · Mon–Sat