CORSAIR CX650 80 PLUS Bronze Non Modular Low-Noise ATX 650 Watt Power Supply - U vs NZXT C850 Gold ATX 3.1 - Fully Modular Low-Noise PC Gaming Power Supply - 850 Wa

Overview of the CORSAIR CX650 and NZXT C850

The CORSAIR CX650 and NZXT C850 are two power supplies designed for different user needs. The CORSAIR CX650 offers a lower price point and a non-modular design, while the NZXT C850 provides a fully modular option with higher wattage and advanced features.

The CORSAIR CX650 is priced at £44.99, making it an attractive choice for budget-conscious individuals who require reliable performance. In contrast, the NZXT C850 is available for £84.90, which reflects its higher capacity of 850 watts and modularity, catering to more demanding gaming setups and users seeking better cable management.

Power Efficiency and Certification

When it comes to power efficiency, the CORSAIR CX650 is 80 PLUS Bronze certified, achieving up to 88% operational efficiency. This certification ensures that the power supply generates less heat and lowers overall energy costs, making it a sensible option for users who are mindful of their electricity bills.

On the other hand, the NZXT C850, while not explicitly rated in the provided data, adheres to the ATX 3.1 standard. This compliance suggests enhanced efficiency and stability, especially when powering high-performance components. The NZXT model is designed to handle power spikes effectively, which is crucial for users with high-end graphics cards and other power-hungry components.

Noise Levels and Cooling Mechanisms

Noise levels are a significant consideration for many PC builders, and both power supplies incorporate low-noise cooling solutions. The CORSAIR CX650 features a 120mm thermally controlled fan that operates quietly at lower loads, ramping up only under heavy stress. This design is ideal for users who prefer a quieter computing experience.

Conversely, the NZXT C850 boasts a 135mm fluid dynamic bearing fan with a Zero Fan Mode, ensuring complete silence when under 50% load. This feature allows for optimal cooling without sacrificing noise levels, making it particularly appealing for gaming setups that require high performance without distracting sounds.

Build Quality and Components

In terms of build quality, the CORSAIR CX650 is designed with black sleeved cables and a sleek black powder-coated casing, providing an aesthetically pleasing look that fits well in any modern PC case. Its compact 125mm length makes it versatile and easy to install.

The NZXT C850 stands out with its use of 100% premium Japanese capacitors, which enhance hold-up time and minimise ripple noise. This high-quality construction ensures reliable and stable power delivery, making it a robust choice for users who demand performance and longevity from their components.

Modularity and Cable Management

The modular design of the NZXT C850 offers significant advantages over the non-modular CORSAIR CX650. With the NZXT model, users can connect only the cables they need, reducing clutter and improving airflow within the PC case. This feature is particularly beneficial for gamers and professionals who prioritise aesthetics and cable management.

In contrast, the CORSAIR CX650's non-modular design means that all cables are permanently attached, which can lead to a messier build and potentially hinder airflow. Users who prefer a tidy setup may find this aspect less appealing.

Compatibility with High-Performance Components

The NZXT C850 is explicitly designed to support high-performance PC components, boasting a durable, heat-resistant 12V-2x6 connector that can provide up to 600 watts to NVIDIA GeForce RTX 50 Series graphics cards. This capability makes it a perfect choice for gamers looking to build a cutting-edge system.

On the other hand, while the CORSAIR CX650 can handle a wide range of components, its lower wattage may limit its effectiveness for users planning to incorporate very high-end graphics cards or multiple power-hungry components. Those building a mid-range system may find it sufficient, but it may not provide the headroom needed for future upgrades.

Price Considerations

Price is a crucial factor when selecting a power supply, and the CORSAIR CX650 is significantly more budget-friendly at £44.99 compared to the NZXT C850, which retails at £84.90. This price difference reflects the additional features and higher wattage offered by the NZXT model.

For users on a tight budget or those who do not require high performance, the CORSAIR CX650 presents an attractive option. However, for those willing to invest more for better efficiency, modularity, and support for high-performance components, the NZXT C850 justifies its higher price point.

Which should you buy?

Choosing between the CORSAIR CX650 and the NZXT C850 ultimately depends on your specific needs and budget. If you are looking for a cost-effective solution that provides reliable performance for a basic system, the CORSAIR CX650 is a solid choice at £44.99. However, if you require a power supply that supports high-performance components, offers modularity for better cable management, and delivers superior efficiency, the NZXT C850 at £84.90 is worth the investment. Each product has its strengths, so your decision should align with your intended use and future upgrade plans.