NZXT C850 SFX Gold - 850W SFX ATX 3.1 Power Supply - 80 Plus Gold - Cybenetics P vs Corsair HX1000i Fully Modular Ultra-Low Noise ATX Power Supply - ATX 3.1 & PCIe

Overview of the NZXT C850 SFX Gold and Corsair HX1000i

The NZXT C850 SFX Gold and Corsair HX1000i are both high-quality power supplies designed for modern computing needs, but they cater to different market segments. The NZXT C850 is priced at £129.98, making it a more budget-friendly option, while the Corsair HX1000i is available for £169.99, targeting users seeking premium features and performance.

The NZXT C850 is designed specifically for compact builds with its SFX form factor, optimising space without sacrificing power. In contrast, the Corsair HX1000i, with its fully modular cabling and ATX form factor, appeals to those looking for flexibility and ease of installation in larger cases. With each power supply offering unique benefits, potential buyers must assess which features align best with their needs.

Design and Build Quality

In terms of design and build quality, the NZXT C850 SFX Gold is ideal for small form factor cases, ensuring efficient use of space while maintaining full-power capabilities. The compact design allows for integration into tighter areas without compromising on performance. The quality is further enhanced by its ATX 3.1 certification, which signifies a reliable and modern power delivery system.

On the other hand, the Corsair HX1000i boasts a fully modular design that enables users to connect only the cables they need, promoting a clean and organised build. Its larger 140mm Fluid Dynamic Bearing (FDB) fan not only contributes to efficient cooling but also ensures longevity. Both power supplies reflect a commitment to quality, but the choice between compactness versus modularity will depend on individual system requirements.

Efficiency Ratings

The efficiency ratings of both power supplies are noteworthy, with the NZXT C850 holding an 80 PLUS Gold certification, ensuring premium efficiency and reduced heat output. This rating is complemented by Cybenetics Platinum efficiency, making it a solid choice for energy-conscious users.

Conversely, the Corsair HX1000i also adheres to the ATX 3.1 power standard, which is crucial for supporting the latest hardware while resisting transient power spikes. Although specific efficiency ratings beyond standard compliance are not detailed, the reputation of Corsair in this domain suggests reliable performance. The NZXT C850’s emphasis on both efficiency and quiet operation may appeal more to users focused on energy savings.

Noise Levels

When it comes to noise levels, the NZXT C850 features a Cybenetics A- noise rating, indicating that it operates quietly during standard usage. Its 92mm FDB fan includes a Zero RPM mode, allowing for silent operation at low loads, which is particularly beneficial for users prioritising a quieter computing environment.

In comparison, the Corsair HX1000i also includes a Zero RPM Fan Mode, enabling the fan to switch off entirely under low and medium loads for near-silent operation. Its larger 140mm FDB fan contributes to quieter performance, especially under heavier loads. Both power supplies excel in minimising noise, yet the choice may hinge on the specific cooling requirements of the user’s build.

Power Delivery and Stability

Power delivery is a critical aspect of any power supply, and the NZXT C850 ensures reliable GPU power with its 600W 12V-2x6 connector, which is essential for modern graphics cards. Additionally, the power supply features low ripple noise and tight voltage regulation, helping to protect components and maintain system stability.

The Corsair HX1000i excels in this area as well, being Intel ATX 3.1 certified and designed to support the PCIe Gen 5.1 platform. Its advanced features, including the capability to toggle between single to multi-rail overcurrent protection (OCP) via CORSAIR iCUE software, provide users with real-time control over their power settings. While both options deliver strong performance, the Corsair offers a level of customisation that may be appealing for more advanced users.

Cooling Solutions

Cooling is a vital consideration for power supplies, and both the NZXT C850 and Corsair HX1000i provide effective solutions. The NZXT model is equipped with a 92mm FDB fan, which operates efficiently and includes a Zero RPM mode for silent operation during low loads.

In contrast, the Corsair HX1000i features a larger 140mm FDB fan that promises quieter performance and longevity. The fan’s size allows for improved airflow, which can be beneficial during high-performance scenarios. Users who prioritise a cooling solution that can handle larger systems may find the Corsair's cooling capabilities more appealing, while those with compact builds might opt for the NZXT.

Price Comparison

Pricing is a notable differentiator between the two models. The NZXT C850 is priced at £129.98, making it a more accessible option for users on a budget or those seeking a power supply for a compact build. This competitive pricing, combined with its efficient performance, makes it an attractive choice for many.

The Corsair HX1000i, on the other hand, commands a higher price of £169.99. This premium cost reflects its advanced features, modular design, and enhanced performance capabilities. Users who require a top-tier power supply with extensive customisation options may justify the higher price, while budget-conscious buyers might lean towards the NZXT.

Which should you buy?

Ultimately, the choice between the NZXT C850 SFX Gold and the Corsair HX1000i hinges on individual needs and system requirements. The NZXT C850 is an excellent option for those seeking an efficient, compact power supply at a lower price point, ideal for small form factor builds. In contrast, the Corsair HX1000i offers advanced features and flexibility, making it better suited for larger systems or users who demand high performance and customisation. Assess your specific requirements carefully to determine which power supply aligns best with your computing setup.