Cooler Master V850 SFX Gold vs CORSAIR RM850x Fully Modular Low-Noise ATX Power Supply

Price Comparison

The Cooler Master V850 SFX Gold is priced at £134.56, while the CORSAIR RM850x is slightly more affordable at £124.40. The price difference of £10.16 could be a deciding factor for budget-conscious consumers. Both power supplies offer great value for their respective features, but the lower price of the RM850x may appeal to those seeking a high-quality product without breaking the bank.

Form Factor

When considering form factor, the Cooler Master V850 SFX Gold is specifically designed for small form factor (SFF) mini-ITX PC cases, with compact dimensions of 100 x 125 x 63.5 mm. This makes it an excellent choice for users looking to build compact systems. In contrast, the CORSAIR RM850x is an ATX power supply, adhering to standard dimensions and compatibility, making it suitable for larger builds. Thus, if space is a concern, the V850 SFX Gold is the optimal choice, but for standard builds, the RM850x offers more versatility.

Efficiency Ratings

Efficiency is a critical factor in power supplies, and both units excel in this area. The Cooler Master V850 SFX Gold boasts an 80 PLUS Gold certification, ensuring up to 90% efficiency under typical loading conditions. This high efficiency translates to lower utility costs and reduced heat generation. Meanwhile, the CORSAIR RM850x, while slightly less efficient with a Cybenetics Gold certification, still achieves up to 91% efficiency. The RM850x may offer marginally better energy savings, making it an attractive option for those prioritising maximum efficiency.

Cable Management

In terms of cable management, the Cooler Master V850 SFX Gold features fully modular cabling, which allows users to connect only the cables necessary for their build. This not only simplifies installation but also aids in maintaining clean internal airflow. Similarly, the CORSAIR RM850x is also fully modular, enabling users to connect only the required cables. Both power supplies excel in this regard, but the RM850x’s emphasis on reliability and efficiency in its cabling may provide a slight edge in terms of user experience.

Noise Levels

When it comes to noise levels, the Cooler Master V850 SFX Gold is equipped with a 92mm fluid dynamic bearing fan that operates quietly and includes a semi-fanless mode when under 15% load. This feature contributes to a quieter computing experience, especially during lighter tasks. The CORSAIR RM850x, being a low-noise power supply, is designed to operate quietly as well, but specific details on its noise levels are less defined. For users prioritising silent operation, the V850 SFX Gold may present a more appealing option due to its specific noise reduction features.

Compatibility and Features

The Cooler Master V850 SFX Gold is compatible with both SFF and ATX cases through the included SFX-to-ATX bracket, making it versatile for various builds. It includes a comprehensive range of cables such as ATX 24 Pin, EPS 4+4, and PCI-e connectors, ensuring compatibility with a wide array of components. On the other hand, the CORSAIR RM850x is ATX 3.1 compliant, supporting the latest standards and ensuring compatibility with newer graphics cards without the need for adapters. The presence of the native 12V-2x6 connector also provides a direct connection, enhancing compatibility with modern systems. Users looking for future-proofing may find the RM850x's features more appealing.

Build Quality and Warranty

The Cooler Master V850 SFX Gold is built with high-quality components, including 100% Japanese capacitors, which are known for their durability and performance. This power supply also comes with a commendable 10-year warranty, giving users confidence in its long-term reliability. Meanwhile, the RM850x also promises a solid build quality, although specific details about its components are less highlighted. While both power supplies are built to last, the V850 SFX Gold’s longer warranty provides additional assurance for potential buyers.

Which should you buy?

In conclusion, choosing between the Cooler Master V850 SFX Gold and the CORSAIR RM850x largely depends on your specific needs. If you're building a compact system and value features like high efficiency, quiet operation, and a lengthy warranty, the V850 SFX Gold could be the better fit at £134.56. Conversely, if you're looking for a more affordable option with excellent efficiency and modern compatibility features, the CORSAIR RM850x at £124.40 stands out. Ultimately, both power supplies are excellent choices, but your particular setup and preferences will guide your decision.