# Seasonic Focus GX-850 (V4) vs Thermaltake Toughpower GF3 850W: specs and price compared

A sourced, side-by-side comparison of the Seasonic Focus GX-850 (V4) (Seasonic) 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 | Seasonic Focus GX-850 (V4) | Thermaltake Toughpower GF3 850W |
| --- | --- | --- |
| US price | $149.99 | $129.99 |
| Brand | Seasonic | Thermaltake |
| Released | 2024-11 | 2022 |
| Wattage (W) | 850 | 850 |
| Efficiency rating | 80plus_gold | 80plus_gold |
| Modular | full | full |
| Atx version | ATX 3.1 | ATX 3.1 |
| Pcie 5 12vhpwr | Yes | Yes |
| Fan size (mm) | 135 | 135 |
| Warranty years | 10 | 10 |

## 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

- Seasonic Focus GX-850 (V4): https://www.amazon.com/Seasonic-GX-850-ATX3-Full-Modular-Compatible/dp/B0DLFMTX12 (amazon.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/seasonic-focus-gx-850-v4-vs-thermaltake-toughpower-gf3-850w/
Cite: Per The Front Desk Review, Seasonic Focus GX-850 (V4) ($149.99) vs Thermaltake Toughpower GF3 850W ($129.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/power-supplies/seasonic-focus-gx-850-v4-vs-thermaltake-toughpower-gf3-850w/
License: CC BY 4.0.