CORSAIR RM850e vs Cooler Master V850 SFX Gold

Overview of the Power Supplies

The CORSAIR RM850e and the Cooler Master V850 SFX Gold are both high-quality power supplies designed for different needs. The CORSAIR RM850e is priced at £85.99, while the Cooler Master V850 SFX Gold is significantly more expensive at £134.56. Both units are fully modular, allowing for flexible cable management, but they cater to different form factors and efficiency requirements.

Design and Form Factor

The CORSAIR RM850e boasts a standard ATX form factor, making it suitable for a wide range of PC builds. In contrast, the Cooler Master V850 SFX Gold is specifically designed for small form factor (SFF) cases, measuring just 100 x 125 x 63.5 mm. This compact design allows the V850 SFX Gold to fit into mini-ITX cases while also being usable in standard ATX cases with an SFX-to-ATX bracket. The choice of form factor will greatly influence your decision, particularly if space is a concern in your build.

Efficiency Ratings

Efficiency is a critical factor when selecting a power supply, and here the Cooler Master V850 SFX Gold has the edge with an 80 PLUS Gold rating, achieving up to 90% efficiency under typical loading. This efficiency not only saves on utility costs but also reduces heat accumulation, which is essential for compact systems. The CORSAIR RM850e, while efficient and reliable, does not specify an efficiency rating in the provided data, making it difficult to compare directly. However, the emphasis on low-noise operation suggests it is designed with similar efficiency considerations.

Cooling Solutions

Cooling solutions differ significantly between the two power supplies. The CORSAIR RM850e features a 120mm rifle bearing fan designed to keep noise levels down even under full load. This is ideal for users seeking a quiet computing experience. On the other hand, the Cooler Master V850 SFX Gold employs a 92mm fluid dynamic bearing (FDB) fan, which not only reduces noise but also includes a semi-fanless mode for loads under 15%. This feature allows for silent operation during low usage, making it a compelling choice for those prioritising quiet performance.

Cable Management

Both power supplies offer fully modular cabling, which is essential for optimising airflow and aesthetics within a PC case. The CORSAIR RM850e allows users to connect only the cables needed for their specific setup, promoting a clean build. The Cooler Master V850 SFX Gold takes this further with a comprehensive selection of cables, including multiple SATA and PCI-e connectors, designed to meet the needs of high-performance components. This level of flexibility in cable management can be particularly beneficial for gamers and professionals with demanding setups.

Build Quality and Reliability

In terms of build quality, the Cooler Master V850 SFX Gold stands out with its commitment to using 100% Japanese capacitors, which are known for their longevity and reliability. This power supply also comes with a 10-year standard warranty, providing peace of mind for users concerned about durability. The CORSAIR RM850e, while it features 105°C-rated capacitors, does not specify the origin of its components or offer a warranty period, making it less appealing for those prioritising long-term reliability.

Pricing Considerations

The price difference between the two power supplies is notable, with the CORSAIR RM850e retailing for £85.99 and the Cooler Master V850 SFX Gold at £134.56. This represents a significant investment for the Cooler Master model, which may be justified by its premium features such as higher efficiency, compact design, and longer warranty. However, for users on a tighter budget or those who do not require the advanced features of the V850 SFX Gold, the CORSAIR RM850e presents a compelling value proposition.

Which should you buy?

Ultimately, the choice between the CORSAIR RM850e and the Cooler Master V850 SFX Gold will depend on your specific needs and budget. If you require a compact, high-efficiency power supply that excels in small form factor builds and offers superior cooling solutions, the Cooler Master V850 SFX Gold may be worth the higher price tag. However, if you are looking for a reliable power supply at a more affordable price and do not need the compact size or premium features, the CORSAIR RM850e is an excellent option.