# Corsair RM850x (2024) vs Thermaltake Toughpower GF3 850W: specs and price compared

A sourced, side-by-side comparison of the Corsair RM850x (2024) (Corsair) 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 | Corsair RM850x (2024) | Thermaltake Toughpower GF3 850W |
| --- | --- | --- |
| US price | $169.99 | $129.99 |
| Brand | Corsair | Thermaltake |
| Released | 2024 | 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) | 140 | 135 |
| Warranty years | 10 | 10 |

## Key differences

- Fan size (mm): Corsair RM850x (2024) 140 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

- Corsair RM850x (2024): https://www.corsair.com/us/en/p/psu/cp-9020270-na/rmx-series-rm850x-fully-modular-power-supply-cp-9020270-na (corsair.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/corsair-rm850x-2024-vs-thermaltake-toughpower-gf3-850w/
Cite: Per The Front Desk Review, Corsair RM850x (2024) ($169.99) vs Thermaltake Toughpower GF3 850W ($129.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/power-supplies/corsair-rm850x-2024-vs-thermaltake-toughpower-gf3-850w/
License: CC BY 4.0.