NZXT C850 SFX Gold - 850W SFX ATX 3.1 Power Supply - 80 Plus Gold - Cybenetics P vs CORSAIR RM1200x SHIFT Fully Modular ATX Power Supply - 80 PLUS Gold - ATX 3.1 -

Price Comparison

When considering the price, the NZXT C850 SFX Gold is significantly more affordable at £129.98 compared to the CORSAIR RM1200x SHIFT, which retails for £174.98. This represents a difference of £45.00, making the NZXT model a more budget-friendly option for those looking to power their systems without overspending.

The cost disparity between the two units may influence buyers who are focused on value, especially in the current climate where many are looking to optimise their hardware investments. The lower price of the NZXT does not necessarily indicate inferior quality; it offers solid features for compact builds.

Form Factor and Design

The NZXT C850 SFX Gold is designed specifically for compact builds, featuring an SFX form factor that maximises space efficiency. This makes it ideal for small form factor (SFF) cases, where space is at a premium. In contrast, the CORSAIR RM1200x SHIFT follows a traditional ATX form factor, which is larger and may not fit into smaller cases.

This difference in design will cater to distinct markets; gamers and professionals seeking to build compact systems will likely favour the NZXT model, while those with more room in their cases may prefer the CORSAIR. Ultimately, the choice depends on the specific requirements of your build.

Power Delivery and Efficiency

In terms of power delivery, both units boast 80 PLUS Gold certifications, ensuring high efficiency with minimal energy waste. The NZXT C850 SFX Gold provides a reliable 850W output, making it capable of delivering dependable power for modern graphics cards, thanks to its ATX 3.1 certification and a 600W 12V-2x6 connector.

On the other hand, the CORSAIR RM1200x SHIFT offers a higher wattage of 1200W, providing even more headroom for power-hungry components. This makes it particularly suitable for high-performance builds where multiple GPUs may be in use. However, for most standard gaming or office setups, the NZXT's power output is likely to be more than sufficient.

Cooling Features

Cooling is an essential aspect of any power supply, and both models incorporate effective cooling solutions. The NZXT C850 SFX Gold is equipped with a 92mm fluid dynamic bearing (FDB) fan that operates quietly, especially in Zero RPM mode, which is beneficial for users who prioritise silent operation.

Conversely, the CORSAIR RM1200x SHIFT features a larger 140mm fluid dynamic bearing fan that utilises a specially calculated fan curve for optimal performance and low noise. This larger fan may provide better airflow and cooling efficiency, especially in high-demand scenarios. Ultimately, both designs aim to reduce noise while maintaining effective cooling, though the choice may boil down to personal preference regarding noise levels and cooling requirements.

Modular Design

The modular design feature of both power supplies enhances cable management, but their implementations differ. The NZXT C850 SFX Gold does not specify a fully modular design, which may lead to a more cluttered build if not managed well. However, it does ensure that essential power delivery remains reliable and efficient.

In contrast, the CORSAIR RM1200x SHIFT boasts a fully modular design with micro-fit PSU connectors. This allows users to connect only the cables they need, reducing clutter and potentially improving airflow within a case. For builders who value cleanliness and ease of installation, the modularity of the CORSAIR model presents a significant advantage.

Reliability and Component Quality

Reliability in power supplies is often determined by the quality of internal components. The NZXT C850 SFX Gold features a Cybenetics Platinum efficiency rating, which indicates a high level of performance and reliability. Additionally, it emphasises low ripple noise and tight voltage regulation, contributing to uninterrupted system performance.

On the other hand, the CORSAIR RM1200x SHIFT comes equipped with 100% 105°C-rated Japanese electrolytic capacitors, which are renowned for their longevity and stability. This premium component quality ensures unwavering power delivery, making it a strong contender for users who require high reliability in demanding environments. The choice between these two units may hinge on whether a user prioritises efficiency ratings or premium internal components.

Certification Standards

Both power supplies conform to the ATX 3.1 certification, indicating they meet the latest industry standards for power supply units. This certification is particularly important for compatibility with the latest hardware, such as PCIe Gen 5.1 platforms, which are becoming increasingly standard in high-performance builds.

The emphasis on compliance with ATX 3.1 across both models alleviates concerns regarding compatibility with modern components. Users can rest assured that either power supply will support the latest technology, making them suitable for contemporary builds.

Which should you buy?

Choosing between the NZXT C850 SFX Gold and the CORSAIR RM1200x SHIFT ultimately depends on your specific needs and budget. If you are building a compact system and looking for a reliable, efficient power supply at a lower price point, the NZXT C850 SFX Gold at £129.98 is an excellent choice. However, if you require higher wattage and a fully modular design for a larger system, the CORSAIR RM1200x SHIFT at £174.98 may be worth the investment. Consider your build requirements, budget, and personal preferences for cooling and cable management when making your decision.