CORSAIR RM850x Fully Modular Low-Noise ATX Power Supply vs NZXT C850 Gold ATX 3.1 - Fully Modular Low-Noise PC Gaming Power Supply - 850 Wa

Overview of the Brands

Corsair and NZXT are two prominent brands in the power supply market, each offering reliable options for gamers and PC builders. The CORSAIR RM850x is priced at £124.40, while the NZXT C850 Gold is more budget-friendly at £84.90. This significant price difference reflects their respective features and the target audience for each model.

Corsair is well-known for its premium components, especially in the gaming community, and the RM850x is no exception. It boasts fully modular cabling, which allows users to connect only the necessary cables for their system, enhancing both aesthetics and airflow. NZXT, on the other hand, focuses on delivering quality products at competitive prices, as showcased by the C850 Gold, which is designed to support high-performance components while maintaining efficiency.

Power Efficiency

Power efficiency is a critical factor when choosing a power supply, and both models excel in this area. The CORSAIR RM850x is Cybenetics Gold-Certified, achieving up to 91% efficiency. This level of efficiency translates to lower power consumption, reduced noise, and cooler operating temperatures, making it an excellent choice for those who are conscious about energy use.

In comparison, the NZXT C850 Gold is also ATX 3.1 compliant, ensuring stability and efficiency for high-performance PCs. However, it does not specify an efficiency rating as high as Corsair's. While both power supplies are designed to handle power spikes effectively, the RM850x's higher efficiency rating gives it an edge for users looking to optimise their energy use.

Noise Levels

When it comes to noise levels, the CORSAIR RM850x and NZXT C850 Gold both strive for low-noise operation. The RM850x is designed as a low-noise power supply, but specific noise levels are not provided. NZXT counters this with a 135mm fluid dynamic bearing fan that features a Zero Fan Mode, making it completely silent under 50% load. This feature is particularly beneficial for gamers who prefer a quiet environment during intense gaming sessions.

Despite lacking explicit noise level specifications, the RM850x's efficiency and low-noise design suggest it operates quietly, but the NZXT C850 Gold clearly has a dedicated feature for silent operation, which may appeal to users prioritising a noiseless setup.

Compatibility and Connectivity

Both power supplies are designed with modern gaming needs in mind, but there are notable differences in connectivity. The CORSAIR RM850x includes a native 12V-2x6 connector, ensuring direct compatibility with the latest graphics cards without the need for adapters. This feature simplifies the installation process and enhances reliability.

Conversely, the NZXT C850 Gold features a durable 12V-2x6 connector that is particularly highlighted as ready for the NVIDIA GeForce RTX 50 Series graphics cards. While both models provide essential connectivity for modern components, the CORSAIR's direct GPU to PSU connection may provide an added layer of convenience for users with high-end graphics needs.

Build Quality

Build quality is crucial for a power supply's longevity and reliability. The CORSAIR RM850x is crafted with high-quality materials, ensuring a robust and long-lasting product. Although specific details on the components are not provided, Corsair's reputation for durability in its power supplies speaks volumes.

The NZXT C850 Gold claims to use 100% premium Japanese capacitors, which enhance hold-up time and minimise ripple noise. This focus on high-quality construction contributes to stable power delivery, making it a competitive option. While both power supplies are built to last, the specific mention of Japanese capacitors in the NZXT model may appeal to users looking for assured reliability.

Aesthetics and Design

In terms of aesthetics, the CORSAIR RM850x features sleek, ultra-flexible embossed cables that not only look great but also facilitate easier installation. The fully modular design means users can route cables neatly, enhancing the overall appearance of their PC build.

The NZXT C850 Gold also has a modern design, but specific aesthetic features are less highlighted compared to the RM850x. However, both power supplies are designed to complement high-performance gaming setups, ensuring that either choice will fit well visually within a custom PC build.

Price Point

Pricing is a significant factor when choosing between these two power supplies. The CORSAIR RM850x is priced at £124.40, positioning it as a premium option with features that justify the cost for serious gamers and enthusiasts. In contrast, the NZXT C850 Gold is more accessible at £84.90, making it a great choice for budget-conscious users who still want reliable performance.

While the higher price of the RM850x reflects its advanced features and efficiency, the NZXT C850 Gold provides excellent value for those who may not require the same level of performance but still seek a quality power supply.

Which should you buy?

Choosing between the CORSAIR RM850x and the NZXT C850 Gold ultimately depends on your specific needs and budget. If you prioritise high efficiency, advanced connectivity, and premium build quality, the CORSAIR RM850x, priced at £124.40, is an excellent choice. On the other hand, if you're looking for a cost-effective yet reliable power supply, the NZXT C850 Gold at £84.90 offers great performance and features that cater to high-performance components.

Both power supplies have their strengths, but your decision should hinge on your requirements for efficiency, noise levels, and budget.