NZXT C850 SFX Gold - 850W SFX ATX 3.1 Power Supply - 80 Plus Gold - Cybenetics P vs CORSAIR RM1000x SHIFT

Overview of the Products

The NZXT C850 SFX Gold and the CORSAIR RM1000x SHIFT are both power supplies aimed at providing reliable power to modern PC components. The NZXT C850 SFX Gold is priced at £129.98, while the CORSAIR RM1000x SHIFT comes in at a higher price of £164.99. Despite the price differences, each power supply presents unique features tailored to specific user needs.

The NZXT C850 SFX Gold is designed for compact builds, offering full-power capabilities in a smaller size, ideal for small form factor cases. The CORSAIR RM1000x SHIFT, on the other hand, focuses on innovative cable management with a side connection position. Both power supplies are well-suited for gaming and high-performance PCs, but their design philosophies differ significantly.

Design and Form Factor

When it comes to design, the NZXT C850 SFX Gold excels with its SFX form factor, making it a prime choice for those looking to maximise space in compact builds. This power supply is engineered to deliver full-power capabilities while occupying a minimal footprint, perfect for small form factor cases.

Conversely, the CORSAIR RM1000x SHIFT adopts a more traditional ATX form factor but innovates with its easy-access connection position on the side of the PSU. This design choice simplifies cable management and allows for cleaner builds, catering to users who prioritise aesthetics as much as performance.

Power Delivery and Efficiency

Power delivery is a crucial aspect of any power supply, and both the NZXT C850 SFX Gold and the CORSAIR RM1000x SHIFT hold their ground here. The NZXT C850 SFX Gold boasts an ATX 3.1 certification along with a robust 600W 12V-2x6 connector, ensuring safe and dependable power delivery for modern graphics cards.

In comparison, the CORSAIR RM1000x SHIFT features a native 12V-2x6 GPU cable designed to easily power the latest graphics cards, including the NVIDIA GeForce RTX 50 Series. Both power supplies offer solid efficiency, but the choice may depend on the specific components in your build.

Noise Levels and Cooling

Noise levels are often a concern for PC builders seeking a quiet operation. The NZXT C850 SFX Gold features a Cybenetics A- noise rating, which signifies quieter system performance. It employs a 92 mm fluid dynamic bearing (FDB) fan with a Zero RPM mode, allowing for silent operation during low-load scenarios.

On the flip side, the CORSAIR RM1000x SHIFT includes a 140mm fluid dynamic bearing fan that also prioritises low noise. The fan curve is specially calculated for high performance while maintaining superior reliability. Both power supplies aim for quiet operation, but the NZXT offers an additional feature for complete silence under low loads.

Cable Management and Modularity

In terms of cable management, the CORSAIR RM1000x SHIFT shines with its fully modular connectors, allowing users to connect only the cables they need. Its Type-5 PSU cables are designed to be smaller, creating more room for routing and overall improving cable management. This is further enhanced by the included debossed PVC cable kit which promotes a neater appearance.

While the NZXT C850 SFX Gold does not specify modularity features, its compact design contributes to easier cable management in small builds. However, it may not offer the same level of flexibility as the CORSAIR's modular approach, particularly for users who value extensive cable management options.

Reliability and Performance

Reliability is essential when selecting a power supply, and both the NZXT C850 SFX Gold and the CORSAIR RM1000x SHIFT do not disappoint. The NZXT model features low ripple noise, tight voltage regulation, and a long hold-up time, all of which contribute to protecting components and maintaining system stability.

The CORSAIR RM1000x SHIFT also prioritises reliability, utilising a specially calculated fan curve to ensure high performance and durability. While both power supplies are rated for efficiency and reliability, the choice may depend on whether you prioritise compactness or advanced cable management.

Pricing and Value

When comparing pricing, the NZXT C850 SFX Gold is the more economical option at £129.98, while the CORSAIR RM1000x SHIFT is priced at £164.99. The higher price of the CORSAIR power supply reflects its advanced features, including innovative cable management and a robust modular design.

Despite the price difference, both products offer commendable value based on their features and performance. However, users on a budget or those building compact systems may find the NZXT C850 SFX Gold to be the better option without sacrificing quality or performance.

Which should you buy?

The decision between the NZXT C850 SFX Gold and the CORSAIR RM1000x SHIFT ultimately hinges on your specific needs and preferences. If you require a compact power supply with excellent efficiency and quieter operation, the NZXT C850 SFX Gold at £129.98 is a compelling choice. It excels in small builds while providing reliable power delivery.

However, if you prioritise advanced cable management and are willing to invest more, the CORSAIR RM1000x SHIFT at £164.99 offers features that enhance overall build aesthetics and flexibility. Each power supply has its strengths, making the right choice dependent on your particular requirements and budget.