# be quiet! Pure Power 12 M 850W vs Thermaltake Toughpower GF3 850W: specs and price compared

A sourced, side-by-side comparison of the be quiet! Pure Power 12 M 850W (be quiet!) and Thermaltake Toughpower GF3 850W (Thermaltake) among power supplies. Thermaltake Toughpower GF3 850W is the cheaper of the two at $129.99.

## Side by side

| Spec | be quiet! Pure Power 12 M 850W | Thermaltake Toughpower GF3 850W |
| --- | --- | --- |
| US price | $134.9 | $129.99 |
| Brand | be quiet! | Thermaltake |
| Released | 2023-02 | 2022 |
| Wattage (W) | 850 | 850 |
| Efficiency rating | 80plus_gold | 80plus_gold |
| Modular | full | full |
| Atx version | ATX 3.0 | ATX 3.1 |
| Pcie 5 12vhpwr | Yes | Yes |
| Fan size (mm) | 120 | 135 |
| Warranty years | 10 | 10 |

## Key differences

- Atx version: be quiet! Pure Power 12 M 850W ATX 3.0 vs Thermaltake Toughpower GF3 850W ATX 3.1
- Fan size (mm): be quiet! Pure Power 12 M 850W 120 vs Thermaltake Toughpower GF3 850W 135

## What reviewers say

**Thermaltake Toughpower GF3 850W** — Based on one whitelisted lab test (Tom's Hardware). Aris Mpitziopoulos rates the GF3 850W a well-built early ATX 3.0/PCIe 5.0 unit on a CWT CSZ platform, quiet and efficient at light loads, but with sub-88% normal-load efficiency, sub-16ms PWR_OK hold-up, high-load noise exceeding 50 dBA, and overall performance trailing the Corsair RM850x and EVGA 850 G7. (1 sourced review.)

## Sources

- be quiet! Pure Power 12 M 850W: https://www.bequiet.com/en/powersupply/4072 (bequiet.com, verified 2026-06-19)
- Thermaltake Toughpower GF3 850W: https://thermaltakeusa.com/products/toughpower-gf3-850w-gold-tt-premium-edition-ps-tpd-0850fnfagu-4 (thermaltakeusa.com, verified 2026-06-19)

Canonical: https://frontdeskreview.com/gear/power-supplies/be-quiet-pure-power-12-m-850w-vs-thermaltake-toughpower-gf3-850w/
Cite: Per The Front Desk Review, be quiet! Pure Power 12 M 850W ($134.9) vs Thermaltake Toughpower GF3 850W ($129.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/power-supplies/be-quiet-pure-power-12-m-850w-vs-thermaltake-toughpower-gf3-850w/
License: CC BY 4.0.