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CORSAIR RM850x Fully Modular Low-Noise ATX Power vs Thermaltake Toughpower GX2 80+ Gold 600W

Updated August 2026 — CORSAIR RM850x Fully Modular Low-Noise ATX Power leads on modularity and compatibility.

The CORSAIR RM850x offers superior efficiency, modularity, and build quality, making it the better choice for high-performance builds. The Thermaltake Toughpower GX2 is a budget-friendly option with decent performance.

Why CORSAIR RM850x Fully Modular Low-Noise ATX Power is better

Efficiency

RM850x has 91% efficiency vs 90% for Toughpower GX2

Modularity

RM850x is fully modular, Toughpower GX2 is non-modular

Warranty

RM850x has a 10-year warranty vs 5 years for Toughpower GX2

Why Thermaltake Toughpower GX2 80+ Gold 600W is better

Price

Toughpower GX2 is $59.99, significantly cheaper than RM850x

Cooling Fan Size

Toughpower GX2 has a 120mm fan, adequate for its power

Basic Features

Toughpower GX2 offers essential features at a lower price

Overall score

CORSAIR RM850x Fully Modular Low-Noise ATX Power
85
Thermaltake Toughpower GX2 80+ Gold 600W
70

Specifications

SpecCORSAIR RM850x Fully Modular Low-Noise ATX PowerThermaltake Toughpower GX2 80+ Gold 600W
Efficiency Rating91%90%
ModularityFully ModularNon-Modular
Cooling Fan Size140mm120mm
Warranty10 years5 years
Power Output850W600W

Dimension comparison

CORSAIR RM850x Fully Modular Low-Noise ATX PowerThermaltake Toughpower GX2 80+ Gold 600W

Price Comparison

The CORSAIR RM850x is priced at $161.93, while the Thermaltake Toughpower GX2 is significantly cheaper at $59.99. This makes the Toughpower GX2 about 63% less expensive than the RM850x. If budget is your primary concern, the Toughpower GX2 offers substantial savings. However, the higher price of the CORSAIR RM850x can be justified by its features and efficiency ratings, making it a strong contender for those willing to invest more for better performance and reliability.

Efficiency Ratings

The CORSAIR RM850x boasts a Cybenetics Gold certification with an efficiency rating of up to 91%, ensuring lower power consumption and reduced heat generation. In comparison, the Thermaltake Toughpower GX2 is also certified Gold, but its efficiency is capped at 90%. This difference, though slight, means that the RM850x can provide slightly better performance in terms of energy savings over time. For users looking to maximize efficiency in their builds, the CORSAIR model may be the superior choice.

Modularity

A key distinguishing feature is the modularity of the power supplies. The CORSAIR RM850x is fully modular, allowing users to connect only the cables they need, which results in a cleaner build and better airflow. Conversely, the Thermaltake Toughpower GX2 is non-modular, meaning all cables are fixed, which can lead to clutter in the case and potentially restrict airflow. For builders who prioritize neatness and customization, the CORSAIR RM850x stands out as the better option.

Cooling Performance

The cooling performance of these two power supplies is noteworthy. The CORSAIR RM850x features a 140mm fluid dynamic bearing (FDB) fan designed for low noise operation, promoting a quiet computing experience. On the other hand, the Thermaltake Toughpower GX2 includes a 120mm dynamic bearing fan that also emphasizes silent operation. While both are designed to keep temperatures down, the larger fan on the RM850x may provide more effective cooling, especially under load, making it preferable for high-performance builds.

Build Quality and Reliability

The build quality of the CORSAIR RM850x is enhanced by 100% Japanese 105°C-rated electrolytic capacitors, which contribute to its overall reliability and longevity. The Toughpower GX2 also uses high-quality capacitors, but does not specify the same level of performance as the RM850x. Additionally, the RM850x is backed by a ten-year warranty, while the Toughpower GX2 comes with a five-year warranty. For users concerned about durability and long-term performance, the CORSAIR RM850x offers more peace of mind.

Compatibility and Features

In terms of compatibility, the CORSAIR RM850x is ATX 3.1 compliant and supports PCIe 5.1, making it suitable for the latest graphics cards without the need for adapters. This ensures seamless integration with modern hardware. The Thermaltake Toughpower GX2 is also compatible with a range of components, but lacks the cutting-edge support that the RM850x provides. Users looking to future-proof their systems may find the advanced compatibility features of the RM850x to be a significant advantage.

User Experience and Installation

User experience is greatly influenced by the installation process and cable management. The fully modular nature of the CORSAIR RM850x simplifies installation, allowing builders to only use the cables necessary for their configuration, thus reducing clutter. Conversely, the non-modular design of the Toughpower GX2 may complicate installation for some users, as they will have to manage unused cables. For those who value ease of installation and a tidy setup, the CORSAIR RM850x is likely the preferred choice.

Which should you buy?

In the battle between the CORSAIR RM850x and the Thermaltake Toughpower GX2, your decision ultimately depends on your specific needs and budget. If you are looking for a high-efficiency, fully modular power supply with advanced compatibility and superior cooling, the CORSAIR RM850x, priced at $161.93, is the clear winner. However, if you're on a tight budget and require a reliable power supply that still offers solid performance, the Thermaltake Toughpower GX2 at $59.99 provides excellent value for money. Consider your priorities in terms of price, efficiency, and installation to make the best choice for your build.