NZXT C850 SFX Gold - 850W SFX ATX 3.1 Power Supply - 80 Plus Gold - Cybenetics P vs CORSAIR RM650e

Price Comparison

The NZXT C850 SFX Gold is priced at £129.98, while the CORSAIR RM650e is significantly more affordable at £79.99. This notable £50 difference makes the CORSAIR a compelling option for budget-conscious consumers seeking reliable power supply solutions. Both power supplies cater to different market segments; while the NZXT is aimed at users needing high efficiency and power for compact builds, the CORSAIR provides a cost-effective choice without sacrificing essential features.

Design and Form Factor

When it comes to design, the NZXT C850 SFX Gold is specifically designed for compact builds, boasting an SFX form factor that maximises space efficiency. This allows it to deliver full-power capabilities within small form factor cases, making it ideal for users with limited space. On the other hand, the CORSAIR RM650e features a standard ATX design, which fits into most modern cases but may not offer the same level of compactness. The choice between these two may hinge on the user’s case specifications and aesthetic preferences.

Efficiency Ratings

The NZXT C850 SFX Gold boasts impressive efficiency ratings, achieving an 80 PLUS Gold certification alongside Cybenetics Platinum efficiency. This high efficiency translates to reduced heat output and quieter operation, making it an excellent choice for users prioritising performance. Conversely, the CORSAIR RM650e also meets a high standard with Cybenetics Gold efficiency, ensuring reliable operation while being more affordable. However, the NZXT’s superior efficiency may appeal to those who require optimal performance under load.

Cooling Solutions

Cooling performance is another area where the two products differ significantly. The NZXT C850 SFX Gold features a 92 mm fluid dynamic bearing (FDB) fan, designed for durability and efficiency. It includes a Zero RPM mode that allows for silent operation during low loads, ensuring minimal noise in quiet environments. In contrast, the CORSAIR RM650e is equipped with a 120 mm articulating bearing fan, which keeps noise levels low even under full load. Users who prioritise silent operation may find the NZXT’s advanced cooling features particularly appealing.

Modular Cabling

For users seeking flexibility in cable management, the CORSAIR RM650e stands out with its fully modular design. This feature allows users to connect only the cables necessary for their system, reducing clutter and improving airflow within the case. The NZXT C850 SFX Gold, while not explicitly stated as modular, is designed to deliver reliable power without the same emphasis on cable management flexibility. Those building a custom PC may prefer the cable management advantages offered by the CORSAIR model.

Compatibility with Modern Hardware

Both power supplies are designed with modern hardware compatibility in mind. The NZXT C850 SFX Gold is ATX 3.1 certified and includes a 600W 12V-2x6 connector, ensuring it can deliver safe, dependable power for contemporary graphics cards. Similarly, the CORSAIR RM650e meets the ATX 3.1 standard and supports the PCIe 5.1 platform, making it suitable for the latest GPUs and hardware configurations. Users with high-performance gaming rigs or demanding workloads can trust either product to provide the necessary power.

Noise Levels

Noise levels are an important consideration for many users, particularly those who build quiet systems. The NZXT C850 SFX Gold is rated with a Cybenetics A- noise rating, indicating that it operates quietly under load. The incorporation of a Zero RPM mode in its fan design further contributes to its silent operation. The CORSAIR RM650e, while also designed for low noise, features a fan curve that ensures minimal noise even at full load. Users focused on maintaining a quiet environment will find that both options perform well, though the NZXT may have the edge in specific scenarios.

Which should you buy?

Choosing between the NZXT C850 SFX Gold and the CORSAIR RM650e ultimately depends on your specific needs and budget. The NZXT model is ideal for users who require high efficiency, compact design, and advanced cooling features, albeit at a higher price of £129.98. In contrast, the CORSAIR RM650e offers excellent value at £79.99, with a fully modular design and sufficient performance for most modern systems. If budget is a key factor and modularity is essential for your build, the CORSAIR RM650e is the clear winner. However, for those seeking top-tier efficiency and compactness, the NZXT C850 SFX Gold is a worthy investment.