NZXT C850 SFX Gold - 850W SFX ATX 3.1 Power Supply - 80 Plus Gold - Cybenetics P vs CORSAIR RM1000e

Price Comparison

The NZXT C850 SFX Gold is priced at £129.98, while the CORSAIR RM1000e costs £149.88. This makes the NZXT model £19.90 cheaper than its Corsair counterpart. When considering budget constraints for power supplies, the lower cost of the NZXT C850 SFX Gold may attract users looking for a high-quality unit without breaking the bank. However, the price difference also reflects the specific features and capabilities of each model, which are essential to evaluate for making an informed choice.

Power Output and Efficiency

The NZXT C850 SFX Gold offers an 850W output and boasts an 80 PLUS Gold efficiency rating, ensuring that it provides reliable power with minimal waste. In contrast, the CORSAIR RM1000e provides a higher output of 1000W but retains the same 80 PLUS Gold efficiency rating. This difference in wattage makes the RM1000e suitable for users with significantly demanding systems, particularly those with multiple high-end graphics cards. While both models ensure efficient power delivery, the choice largely depends on the specific power requirements of your build.

Form Factor and Compatibility

The NZXT C850 SFX Gold is designed with an SFX form factor, making it ideal for compact builds where space is at a premium. This design allows it to deliver full power capabilities in smaller cases, which is a significant advantage for users with limited space. On the other hand, the CORSAIR RM1000e follows the standard ATX form factor, which offers broader compatibility with a variety of mid to full-tower cases. If you're building a small form factor (SFF) system, the NZXT's compact design may be the better option, whereas the Corsair is more suitable for traditional builds.

Noise Levels

The NZXT C850 SFX Gold operates with a 92 mm fluid dynamic bearing fan that features a Zero RPM mode, allowing for silent operation under low loads. This ensures that users can maintain a quiet environment, particularly beneficial for those who prioritise acoustics in their builds. Conversely, the CORSAIR RM1000e is equipped with a 120mm rifle bearing fan, designed to keep noise levels down even under full load. While both power supplies excel in maintaining low noise levels, the NZXT's dedicated silent mode may appeal more to users who want absolute silence during less demanding tasks.

Cable Management

The NZXT C850 SFX Gold does not explicitly mention modularity, suggesting a semi-modular or non-modular design. This could potentially lead to a more cluttered build if excess cables are not managed properly. In contrast, the CORSAIR RM1000e is fully modular, allowing users to connect only the cables necessary for their specific builds. This feature simplifies cable management, leading to a cleaner and more organised system. For those who value aesthetics and ease of installation, the fully modular nature of the Corsair RM1000e provides a distinct advantage.

Certification and Reliability

Both power supplies are certified under the ATX 3.1 standard, which guarantees compliance with the latest power supply requirements, ensuring reliability and efficiency. The NZXT C850 SFX Gold's ATX 3.1 certification includes a dedicated 600W 12V-2x6 connector for modern graphics cards, highlighting its focus on reliable GPU power delivery. Meanwhile, the CORSAIR RM1000e also supports PCIe 5.1, which accommodates high transient power demands. Both units are designed to deliver steady and dependable power, but the specific certifications and features may cater to different user needs based on their hardware configuration.

Component Protection

The NZXT C850 SFX Gold features low ripple noise, tight voltage regulation, and a long hold-up time, all contributing to the protection of system components. This is crucial for maintaining system stability and longevity, particularly in high-performance builds. The CORSAIR RM1000e is equipped with 105°C-rated capacitors, which ensure reliable electrical performance under various operating conditions. While both power supplies offer protection for components, the NZXT’s focus on ripple noise and voltage regulation may appeal to users who wish to ensure maximum stability in their systems.

Which should you buy?

Ultimately, the choice between the NZXT C850 SFX Gold and the CORSAIR RM1000e will depend on your specific needs and preferences. If you're building a compact system and are budget-conscious, the NZXT C850 SFX Gold offers excellent efficiency and silent operation at a lower price point. However, if you require higher wattage and appreciate modular cabling for a cleaner build, the CORSAIR RM1000e is worth the extra £19.90. Both power supplies are excellent in their own right, but aligning their features with your system requirements will lead to the best decision for your setup.