The Thermaltake Toughpower GT 850W is a standard-size ATX power supply for a modern gaming or work PC. Thermaltake builds it to the ATX 3.1 specification, certifies it 80 PLUS Gold and makes every cable detachable, so only the leads your build needs go into the case. It carries a native 12V-2×6 (12+4 pin) cable for graphics cards that use the newer power connector, a single +12V rail rated at 70.8A, and a 120mm hydraulic-bearing fan controlled by Thermaltake’s Smart Zero Fan logic. This is the ATX 3.1 model, part number PS-TPT-0850FNFAG*-3, black.
Table of Contents
What ATX 3.1 means in practice
ATX 3.1 is Intel’s current power supply standard, and Thermaltake says the Thermaltake Toughpower GT 850W is fully compatible with it. The headline requirement is tolerance of power excursions: brief spikes in demand that modern graphics cards produce for fractions of a second. Thermaltake states the series supports total power excursion of up to 200%, reaches at least 60% efficiency at low load, and meets the timing rules the standard sets for power-good and hold-up signals. Its spec sheet lists a power-good signal of 100–250 ms and hold-up time above 17 ms at 80% load. For the owner, the practical result is fewer unexplained shutdowns when a demanding game loads a new scene.
Native 12V-2×6 cable for current GPUs
Instead of an adapter that merges several 8-pin leads, the Thermaltake Toughpower GT 850W comes with one native PCIe 12V-2×6 (12+4 pin) cable, 600 mm long, which plugs straight into graphics cards with that socket. Thermaltake notes that the wattage marked on the 12+4 pin plug is a recommended figure based on Intel’s design guideline, and asks buyers to follow the power recommendation of their graphics card maker before using it. For older cards there are also four PCIe 6+2 pin connectors spread over two cables, each 600 mm plus 150 mm to the second plug.
Cables and connectors in the box
Every cable is modular and low-profile, which makes routing behind the motherboard tray easier. Thermaltake lists one 24-pin main cable (550 mm), two 4+4 pin ATX12V CPU cables (700 mm each), four PCIe 6+2 pin plugs on two cables, one 12+4 pin PCIe cable, six SATA plugs on two cables and four 4-pin peripheral plugs on one cable. That is enough for one high-end graphics card, a CPU board with dual EPS sockets and several drives. Use only the cables that came with this unit: modular pinouts differ between brands and even between series.
Efficiency, rail and electrical figures
The Thermaltake Toughpower GT 850W is certified 80 PLUS Gold; Thermaltake notes the certification is met at 115 V AC input and quotes efficiency of up to 90%. Total output is 850W, of which the single +12V rail can deliver up to 70.8A (849.6W); the +3.3V and +5V rails share 100W, with 3A on +5VSB. Input is 100–240 V AC at 50–60 Hz, 10A maximum, with active PFC, so it runs on UAE 230 V mains directly. Thermaltake uses an LLC and DC-to-DC design for voltage regulation and rates MTBF at 100,000 hours minimum.
Cooling, noise and protections
A 120mm hydraulic-bearing fan cools the unit. Smart Zero Fan adjusts the fan speed to cut unnecessary noise; Thermaltake does not publish the exact load or temperature at which the fan starts or stops, nor a decibel figure. Six protections are built in: over-current (OCP), over-voltage (OVP), under-voltage (UVP), over-power (OPP), short-circuit (SCP) and over-temperature (OTP). Rated operating temperature is 0–40°C at 5–85% non-condensing humidity, so a case with reasonable airflow matters in a warm room. Thermaltake also notes the 850W model comes in two authentic hardware versions, A and B.
Who the Thermaltake Toughpower GT 850W suits
It suits someone building or upgrading a single-GPU gaming PC who wants the native 12V-2×6 cable without adapters, a builder who prefers fully modular cables for a tidy case, and anyone replacing an older ATX 2.x unit that trips under modern graphics card spikes. The standard 150 × 86 × 140 mm body fits mid-tower and full-tower cases that take ATX power supplies. Always check your graphics card maker’s recommended PSU wattage against your CPU and the rest of the system before choosing 850W.
Who This Is Not For
The Thermaltake Toughpower GT 850W is not for small-form-factor cases that only accept SFX or SFX-L units: it is a full ATX body, 140 mm deep. It is not for systems with two high-end graphics cards, or for a card whose maker recommends more than 850W. Thermaltake does not publish a fan noise figure or the Smart Zero Fan switching point, and it has no RGB lighting or digital monitoring. It is also more than an office PC without a graphics card needs.
Ordering from Totot
Totot sells the Thermaltake Toughpower GT 850W brand-new and genuine in its sealed box, backed by a 1-year warranty from Totot. Delivered across the UAE in up to 3 business days, free on orders from AED 300, with cash on delivery or instalments via Tabby and Tamara. Items that arrive defective or not as ordered can be returned within 14 days, and any shipping damage should be reported within 48 hours of delivery. Browse more in our Power Supplies range, or see the official Thermaltake Toughpower GT 850W (ATX 3.1) page.
Thermaltake Toughpower GT 850W Specifications
- Model: Thermaltake Toughpower GT 850W (ATX 3.1), P/N PS-TPT-0850FNFAG*-3
- Maximum output: 850W total; +12V single rail 70.8A (849.6W)
- Other rails: +3.3V 20A and +5V 20A (100W combined), −12V 0.3A, +5VSB 3A
- Standard: ATX 3.1, PCIe Gen 5.1 ready
- Efficiency: 80 PLUS Gold (met at 115 V AC input), up to 90%
- GPU connector: 1 × native PCIe 12V-2×6 (12+4 pin), 600 mm
- Other connectors: 1 × 24-pin; 2 × 4+4 pin ATX12V; 4 × PCIe 6+2 pin; 6 × SATA; 4 × 4-pin peripheral
- Cables: Fully modular, low-profile
- Fan: 120mm hydraulic bearing, Smart Zero Fan
- AC input: 100–240 V AC, 50–60 Hz, 10A max, active PFC
- Hold-up time: More than 17 ms at 80% load
- Protections: OVP, UVP, OCP, OPP, OTP, SCP
- MTBF: 100,000 hours minimum
- Operating temperature: 0–40°C
- Dimensions: 150 (W) × 86 (H) × 140 (D) mm
- Weight: Not published by Thermaltake
- Colour: Black
- Warranty: 1-year warranty from Totot
Thermaltake Toughpower GT 850W FAQ
Does the Thermaltake Toughpower GT 850W need an adapter for a 12V-2×6 graphics card?
No. It includes a native 12V-2×6 (12+4 pin) modular cable that plugs straight into the card.
Is the Thermaltake Toughpower GT 850W fully modular?
Yes. Every cable, including the 24-pin main lead, detaches from the unit.
Will it work on UAE mains power?
Yes. The input range is 100–240 V AC at 50–60 Hz, which covers UAE 230 V sockets.
How much does the Thermaltake Toughpower GT 850W weigh?
Thermaltake does not publish the weight on its specification page.
What size is it?
150 × 86 × 140 mm, a standard ATX power supply size.
Why is the fan not spinning at idle?
Smart Zero Fan reduces or stops fan activity at light load; Thermaltake does not publish the exact switching point.
Is it genuine?
Yes. We sell the genuine Thermaltake Toughpower GT 850W, brand-new in its sealed box.
How long does delivery take?
Up to 3 business days anywhere in the UAE, free on orders from AED 300; any current delivery fee for your order is shown at checkout.
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