Cooler Master V850 SFX Gold vs CORSAIR RM650e

Overview of the Cooler Master V850 SFX Gold and CORSAIR RM650e

The Cooler Master V850 SFX Gold is designed for small form factor builds, while the CORSAIR RM650e offers a versatile solution for a broader range of applications. At £134.56, the Cooler Master is more expensive, reflecting its high efficiency and compact form. In contrast, the RM650e is priced at £71.57, making it an attractive option for budget-conscious users.

Design and Form Factor

The Cooler Master V850 SFX Gold boasts compact dimensions of 100 x 125 x 63.5 mm, making it ideal for mini-ITX PC cases. This small form factor does not come at the expense of versatility, as it can also be installed in ATX cases. On the other hand, the CORSAIR RM650e, while not as compact, is designed to fit standard ATX cases, appealing to users who may not require a small footprint. Its fully modular design facilitates efficient cable management, a feature both models share for improved aesthetics and airflow.

Efficiency and Certifications

In terms of efficiency, the Cooler Master V850 SFX Gold is rated 80 PLUS Gold, achieving up to 90% efficiency under typical loads. This high efficiency translates to lower energy costs and reduced heat generation, which is crucial for compact systems. The CORSAIR RM650e, while not rated as highly, is Intel ATX 3.1 certified, supporting PCIe 5.1 and capable of handling transient power excursions from GPUs. This means that while it may not be as efficient as the V850, it is still designed to meet modern power demands.

Cooling Performance

The Cooler Master V850 SFX Gold features a 92mm fluid dynamic bearing fan that operates quietly and includes a semi-fanless mode under low loads. This ensures that users experience minimal noise during operation, particularly in quieter environments. In comparison, the RM650e utilises a 120mm rifle bearing fan, which is also designed to keep noise levels down even under full load. While the Cooler Master has a more advanced fan design, the RM650e’s larger fan may provide better cooling performance, particularly in larger builds.

Build Quality and Reliability

Durability is a key consideration when choosing a power supply. The Cooler Master V850 SFX Gold is built with 100% Japanese capacitors that enhance its longevity and reliability. It also comes with a 10-year warranty, providing users with additional peace of mind regarding its performance over time. Conversely, the RM650e is equipped with 105°C-rated capacitors, ensuring steady power delivery and dependable electrical performance. However, it does not specify a warranty period, which may be a consideration for users prioritising long-term reliability.

Noise Levels

Noise considerations are essential, especially for builds intended for quiet operation. The Cooler Master V850 SFX Gold’s fluid dynamic bearing fan and semi-fanless mode contribute to its quiet operation, particularly under low loads. The RM650e’s 120mm rifle bearing fan is also designed to maintain a low noise profile, but operating at full load may produce more noise compared to the V850. Ultimately, users seeking a whisper-quiet experience may prefer the advanced fan technology of the Cooler Master.

Cable Management

Cable management is crucial for maintaining an organised and efficient build. The Cooler Master V850 SFX Gold offers fully modular cabling, allowing users to connect only the cables necessary for their system, which improves airflow and aesthetics. Similarly, the CORSAIR RM650e also features fully modular cabling, ensuring that users can achieve a clean build with minimal clutter. Both power supplies excel in this area, making them suitable for users who prioritise tidy and efficient setups.

Which should you buy?

Choosing between the Cooler Master V850 SFX Gold and the CORSAIR RM650e ultimately depends on your specific needs and budget. If you require a compact power supply that excels in efficiency and has advanced cooling features, the V850 is worth the higher price of £134.56. However, if you are looking for a reliable, cost-effective option that still offers solid performance for a standard ATX build, the RM650e at £71.57 presents a compelling choice. Each power supply has its strengths, making them suitable for different types of users; your decision should reflect your priorities in terms of performance, noise level, and budget.