CORSAIR CX650 80 PLUS Bronze Non Modular Low-Noise ATX 650 Watt Power Supply - U vs Corsair RM850e

Price Comparison

The CORSAIR CX650 is priced at £44.99, while the Corsair RM850e is significantly more expensive at £92.99. This price difference of £48.00 makes the CX650 a more budget-friendly option for users looking for a reliable power supply without breaking the bank. Given that both products are from the same brand, it’s important to weigh the features against the cost to determine which model offers better value for your needs.

Efficiency and Certification

The CORSAIR CX650 boasts an 80 PLUS Bronze certification, ensuring up to 88% operational efficiency. This certification indicates that the power supply generates less heat and ultimately lowers energy costs, which is crucial for users concerned about long-term electricity bills. In contrast, the Corsair RM850e adheres to the Intel ATX 3.1 standard, offering modern features that may appeal to enthusiasts seeking cutting-edge technology. While the CX650 delivers solid efficiency, the RM850e’s compliance with the latest standards may justify its higher price for those requiring advanced performance.

Modularity

One of the key differences is modularity. The CORSAIR CX650 is a non-modular power supply, meaning all cables are fixed and cannot be removed. This may lead to a messier build and less efficient cable management. Conversely, the Corsair RM850e is fully modular, allowing users to connect only the cables necessary for their specific build. This feature not only enhances the aesthetics of a PC build but also improves airflow and reduces clutter, making the RM850e a better choice for users who prioritise clean setups.

Cooling Solutions

Cooling performance is another area of distinction. The CORSAIR CX650 features a 120mm thermally controlled fan that operates quietly at lower loads, ramping up only under heavy stress. This design aims to provide a low-noise experience during typical usage. The Corsair RM850e, on the other hand, also includes a 120mm fan but utilises a rifle bearing mechanism with a specially calculated fan curve, ensuring it maintains low noise levels even under full load. For users who prioritise a silent operation under demanding conditions, the RM850e may be the preferable choice.

Build Quality and Components

When it comes to build quality, the Corsair RM850e stands out with its 105°C-rated capacitors, which promise steady and reliable power delivery. This quality can significantly improve the longevity and performance of your PC components. In contrast, the CORSAIR CX650 does not specify capacitor ratings, which may indicate a variance in reliability over time. If users are looking for a power supply that can withstand higher temperatures and maintain consistent performance, the RM850e is likely the better option.

Compatibility and Future-Proofing

The Corsair RM850e’s compliance with the ATX 3.1 standard means it is designed to support modern components, including the PCIe Gen 5.1 platform. This future-proofing is essential for gamers and professionals planning to upgrade their systems in the near future. Meanwhile, the CORSAIR CX650, while still a solid choice, lacks these advanced compatibility features. For users who are planning to use the latest hardware or are likely to upgrade in the coming years, the RM850e offers a more secure investment.

User Experience and Installation

In terms of user experience, the fully modular design of the Corsair RM850e makes installation easier, as users can select only the cables they need, reducing the chance of connectivity issues and facilitating better airflow. The CORSAIR CX650’s non-modular setup may result in a more complicated installation process, particularly for those who prefer a tidy build. For PC builders who value a straightforward assembly process and a clean appearance, the RM850e is undoubtedly the more user-friendly option.

Which should you buy?

Ultimately, the choice between the CORSAIR CX650 and the Corsair RM850e comes down to your specific needs and budget. If you are looking for an economical power supply that offers decent efficiency and reliability, the CX650 at £44.99 is a solid choice. However, if you are building a high-performance rig and want a power supply that ensures future compatibility and superior cooling, the RM850e, despite its higher price of £92.99, provides features that justify the investment. Consider what aspects are most important for your build to make the best decision.