Thermaltake
Thermaltake GF1 Fully Modular ATX 850W Power Supply (PS-TPD-0850FNFAGU-P)
Status: Thermaltake GF1 Fully Modular ATX 850W Power… (850W 80 Plus Gold fully modular ATX power supply): Unavailable on Amazon as of . Closest in-stock match (same 850W 80 Plus Gold fully modular ATX power supply): Thermaltake Toughpower GF A3 Snow Edition 850W…, $125.72 on Amazon as of 2026-10-21 16:26 UTC (price may vary). eBay sellers may still list this model new or used.
Bottom line: The Thermaltake GF1 Fully Modular ATX 850W Power Supply: 80 Plus Gold efficiency cuts wasted heat at typical gaming loads; main trade-off: 150mm length can be tight in some small form factor cases.
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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives with matching specs:
Same 850W 80 Plus Gold fully modular ATX power supply: Thermaltake Toughpower GF A3 Snow Edition 850W… — $125.72 on Amazon as of 2026-10-21 16:26 UTC (price may vary).
Same 850W 80 Plus Gold fully modular ATX power supply: be quiet! Pure Power 13 M 850W — $109.90 on Amazon as of 2026-10-21 04:20 UTC (price may vary).
Same 850W 80 Plus Gold fully modular ATX power supply: NZXT C850 Gold ATX 3.1-850W Fully Modular Power… — $124.99 on Amazon as of 2026-10-21 10:19 UTC (price may vary).
Pros & Cons
Pros
- ✓ 80 Plus Gold efficiency cuts wasted heat at typical gaming loads
- ✓ Fully modular: connect only the cables your build uses
- ✓ Smart Zero Fan keeps it silent at light loads
- ✓ Single high-amperage +12V rail with DC-to-DC design
- ✓ 10-year warranty on the Toughpower GF1 series
Cons
- ✗ 150mm length can be tight in some small form factor cases
- ✗ No native 12VHPWR / 12V-2x6 connector listed in the product specs
- ✗ ATX 3.0 / 3.1 compliance not stated in the listing
- ✗ Fan spins up under heavier loads, so Zero RPM only helps at idle
Manufacturer description
The Thermaltake Toughpower GF1 850W is a fully modular ATX power supply for gaming and workstation builds that need steady power and quiet operation. It is 80 Plus Gold certified, so less energy is lost as heat at typical loads. It is also Intel C6/C7 state and ErP Ready, which means it handles low-power idle states on modern platforms. You get a high-amperage single +12V rail with DC-to-DC conversion, so power is delivered from one rail rather than split across several. Thermaltake's Smart Zero Fan mode keeps the fluid bearing fan stopped until the load passes a set threshold. That means a…
SpecPicks Verdict
SpecPicks scored Thermaltake GF1 Fully Modular ATX 850W Power Supply 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.
Frequently Asked Questions
What are the dimensions of the Thermaltake GF1 850W?
It measures 140mm (D) x 86mm (H) x 150mm (L). Check your case's PSU clearance, allowing for modular cable bends at the rear.
Is the Toughpower GF1 850W fully modular?
Yes. Every cable is detachable, so you install only the leads your build needs, which makes cable management easier.
How long is the warranty on the Thermaltake GF1?
Thermaltake lists a 10-year warranty for the Toughpower GF1 series. Confirm current terms and registration requirements with Thermaltake before you buy.
Does the fan run all the time?
No. The Smart Zero Fan feature keeps the fluid bearing fan stopped until the load passes a set percentage, so it runs silently at light loads.
Does the GF1 850W have a 12VHPWR connector for RTX 40/50 series GPUs?
The listing does not mention a native 12VHPWR or 12V-2x6 connector. Check Thermaltake's spec sheet for the included cables before pairing it with a GPU that needs one.
Key Features
- 80Plus Gold certified and Intel C6/C7 state and ErP Ready
- Smart Zero Fan: minimizes undesired noise
- Ultra quiet 140mm fluid bearing fan
- High amperage single plus 12V rail with DC to DC design
- Built-in industrial grade protections
Full Specifications
| Brand | Thermaltake |
|---|---|
| Wattage | 850 watts |
| Fan Size | 14 centimeters |
| Model Name | GF1 850 |
| Unit Count | 1 Count |
| Form Factor | ATX |
| Model Number | TPD-850AH2FLG |
| Connector Type | ATX |
| Cooling Method | Air |
| Number of Fans | 1 |
| Output Wattage | 850 watts |
| Smart Zero Fan | minimizes undesired noise |
| Item Dimensions | 5.9 x 5.5 x 3.4 inches |
| Mfr Part Number | PS-TPD-0850FNFAGU-P |
| Compatible Devices | Personal Computer |
| Power Supply Design | Full Modular |
| Warranty Description | 10 Year Manufacturer |
| Maximum Input Voltage | 240 volts_of_alternating_current |
| Minimum Input Voltage | 100 volts |
| Item dimensions L x W x H | 5.9 x 5.5 x 3.4 inches |
| Full listing title | Thermaltake GF1 Fully Modular ATX 850W Power Supply - 80 Plus Gold - Ultra Quiet - Zero RPM, PS-TPD-0850FNFAGU-P |
Ready to buy?
Amazon shows no buyable offer for Thermaltake GF1 Fully Modular ATX 850W Power… at the last check. The closest in-stock match with the same 850W 80 Plus Gold fully modular ATX power supply is Thermaltake Toughpower GF A3 Snow Edition 850W…. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
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