CORSAIR SF850 vs NZXT C850 Gold ATX 3.1 - Fully Modular Low-Noise PC Gaming Power Supply - 850 Wa

Introduction to Power Supplies

When it comes to choosing a power supply for your PC, two options stand out: the CORSAIR SF850 and the NZXT C850 Gold. Both power supplies cater to high-performance needs but differ significantly in price, features, and construction. This comparison will help you understand which power supply might be the better choice for your build.

Price Comparison

The CORSAIR SF850 is priced at £149.99, while the NZXT C850 Gold offers a more budget-friendly option at £84.90. This substantial difference of £65.09 positions the NZXT as an attractive choice for those looking to save money without sacrificing quality. However, the price disparity reflects the unique features and performance levels of each model, making it crucial to consider what you value more in a power supply.

Efficiency and Ratings

The CORSAIR SF850 boasts an impressive 80 PLUS Platinum rating, indicating superior efficiency in power consumption. This means that it wastes less energy and generates less heat compared to lower-rated models. Conversely, the NZXT C850 Gold is 80 PLUS Gold rated, which, while still efficient, does not perform quite as well as the Platinum-rated CORSAIR. If energy efficiency is a priority for you, the CORSAIR SF850 has the edge.

Form Factor and Compatibility

The CORSAIR SF850 is designed in a compact SFX form-factor, making it ideal for small-form-factor builds or for users who want to save space in larger cases. It is also ATX 3.1 compliant and supports PCIe Gen 5.1, making it future-proof for high-performance components. In comparison, the NZXT C850 Gold is a standard ATX power supply, also compliant with the ATX 3.1 standard but may take up more space in smaller cases. If your build is constrained for space, the CORSAIR SF850 is the more suitable option.

Cooling Solutions

Cooling is a critical aspect of power supplies, and both models offer advanced cooling solutions. The CORSAIR SF850 features a 92mm PWM cooling fan that ensures powerful cooling with low-noise operation due to its fluid dynamic bearing. The NZXT C850 Gold, on the other hand, is equipped with a larger 135mm fluid dynamic bearing fan that operates silently under 50% load, thanks to its Zero Fan Mode. For users prioritising quiet operation, the NZXT may have a slight advantage, particularly in quieter builds.

Build Quality and Components

Both power supplies utilise high-quality components, but they have different focuses. The CORSAIR SF850 is built with 105°C rated Japanese capacitors, which provide unwavering power and reliability. This can be particularly advantageous for demanding applications. The NZXT C850 Gold also utilises premium Japanese capacitors, ensuring stability and minimal ripple noise. However, the emphasis on 12V-2x6 connectors in the NZXT caters specifically to NVIDIA GeForce RTX 50 Series graphics cards, showcasing a targeted design for gamers.

Noise Levels

Noise levels are an essential factor for many PC builders. The CORSAIR SF850 operates quietly thanks to its efficient cooling fan, but it does not feature a Zero Fan Mode. In contrast, the NZXT C850 Gold's low-noise fan is designed to remain silent when the power supply is under 50% load, which can be a significant benefit for users who prefer a quieter computing environment. If noise is a key concern for your build, the NZXT C850 Gold could be the better option.

Warranty and Support

Warranty periods can also influence the decision between these two power supplies. While specific warranty details are not provided in the data, it is essential to consider that both brands typically offer competitive warranty terms. Corsair is known for its strong customer support, while NZXT also has a reputation for good service. Checking the latest warranty information and customer reviews may aid in making a more informed decision.

Which should you buy?

When deciding between the CORSAIR SF850 and the NZXT C850 Gold, your choice should depend on your specific needs and preferences. If you are seeking a compact, highly efficient power supply with premium components and are willing to pay a higher price for it, the CORSAIR SF850 is your best bet. However, if you are looking for a more budget-friendly option that still delivers excellent performance, particularly in noise management and compatibility with newer graphics cards, the NZXT C850 Gold presents a compelling alternative. Ultimately, both power supplies offer solid choices, but your priorities will dictate the best option for your build.