NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - 80 PLUS Gold - Cybenetics Plat vs Corsair HX1000i Fully Modular Ultra-Low Noise ATX Power Supply - ATX 3.1 & PCIe

Overview of the Products

In the power supply market, the NZXT C850 Gold Core and the Corsair HX1000i stand out as strong contenders. Both are ATX 3.1 certified, ensuring compatibility with the latest hardware, but they cater to slightly different needs and budgets. The NZXT C850 is priced at £89.99, making it a more affordable choice, while the Corsair HX1000i retails at £169.99, positioning it as a premium option.

The NZXT C850 offers 850W of power, which is ample for most gaming rigs and high-performance PCs. In contrast, the Corsair HX1000i provides 1000W, giving users the flexibility to support more demanding setups or future expansions. This difference in wattage could be a deciding factor for those planning to run multiple GPUs or high-powered components.

Efficiency Ratings

When it comes to efficiency, the NZXT C850 boasts an 80 PLUS Gold certification, indicating it operates at up to 90% efficiency at typical loads. This is ideal for users seeking to minimise energy costs and heat output. The Corsair HX1000i, however, takes it a step further with Intel ATX 3.1 certification and additional support for PCIe Gen 5.1, which helps it resist transient power spikes better than the NZXT model.

Both power supplies are designed to deliver stable performance under load, but the HX1000i's certification implies a more robust capability for handling power fluctuations, making it potentially more reliable for high-end systems. Users may value this extra assurance when investing in costly components.

Noise Levels

Noise performance is a critical consideration for many users, especially those who value a quiet computing environment. The NZXT C850 is Cybenetics noise certified, achieving a rating of A++ for noise levels below 15 dBA during operation. This means it operates quietly, making it suitable for systems where noise is a concern.

Meanwhile, the Corsair HX1000i also features a Zero RPM Fan Mode, which means the fan completely stops at low and medium loads for silent operation. However, its 140mm Fluid Dynamic Bearing fan is designed to provide extremely quiet performance, albeit with potentially higher noise levels when under heavy load compared to the NZXT. Thus, users who prioritise silence might lean towards the NZXT C850.

Modularity

Modularity can significantly impact the ease of installation and cable management within a PC build. The NZXT C850 is not explicitly described as fully modular, which may imply that some cables are fixed, potentially complicating cable management for certain users. In contrast, the Corsair HX1000i is fully modular, allowing users to connect only the cables necessary for their specific build. This feature simplifies installation and enhances airflow within the case.

For those who appreciate a tidy build, the modular design of the Corsair HX1000i offers a clear advantage, making it easier to maintain a clean aesthetic and optimal airflow. This distinction could be crucial for users who frequently upgrade or modify their systems.

Fan Technology

Both power supplies employ advanced fan technologies to ensure efficient cooling. The NZXT C850 utilises a 135mm fluid dynamic bearing fan, which not only contributes to quieter operation but also enhances longevity. The fan features a Zero RPM mode, which means it operates silently during light workloads.

Conversely, the Corsair HX1000i’s 140mm Fluid Dynamic Bearing fan is engineered for durability and quiet performance as well. The added benefit of the CORSAIR iCUE software allows users to create custom fan curves and monitor their power settings, which adds a layer of control not available with the NZXT. This aspect may appeal to users who want to fine-tune their cooling preferences.

Compatibility with GPUs

Compatibility with modern GPUs is essential for any power supply, especially with the increasing requirements of high-end graphics cards. The NZXT C850 is designed to support next-gen GPUs, featuring a dual-colour 12V-2x6 connector and the ability to connect up to three 8-pin PCIe cables. This makes it well-suited for contemporary NVIDIA graphics cards and offers flexibility for various setups.

The Corsair HX1000i is also compatible with the latest GPUs, supporting the PCIe Gen 5.1 standard, which is crucial for future-proofing. Both power supplies support a range of GPUs, but the HX1000i's compliance with newer standards may provide a slight edge for users looking to invest long-term in high-performance graphics solutions.

Price Comparison

Price is often a decisive factor in product comparisons, and there's a clear distinction between the two options here. The NZXT C850 is priced at £89.99, making it an economical choice for those who need a reliable power supply without breaking the bank. In contrast, the Corsair HX1000i is significantly more expensive at £169.99.

While the higher price of the Corsair does reflect its premium features and enhanced capabilities, budget-conscious consumers may find the NZXT C850 to be a more appealing option without sacrificing essential performance. This price difference will undoubtedly influence which product users choose, based on their financial constraints and performance needs.

Which should you buy?

Choosing between the NZXT C850 Gold Core and the Corsair HX1000i ultimately depends on your specific needs and budget. If you're looking for a cost-effective, efficient, and quiet power supply suitable for standard gaming builds, the NZXT C850 at £89.99 is a strong contender. However, if you require a high-capacity, fully modular power supply with advanced features like customisable fan curves and superior transient power spike resistance, the Corsair HX1000i, despite its higher price of £169.99, may be the better investment. Your decision should weigh both current needs and future upgrades to determine the best fit for your system.