CORSAIR RM850x Fully Modular Low-Noise ATX Power Supply vs be quiet! System Power 11 750W Power Supply

Price Comparison

When it comes to pricing, the CORSAIR RM850x is considerably more expensive than the be quiet! System Power 11. The RM850x is priced at £124.40, while the System Power 11 is available for £64.99. This significant difference of £59.41 may be a deciding factor for budget-conscious consumers. While the higher price of the RM850x can be justified by its features, those looking for a more economical option may find the System Power 11 to be a more appealing choice.

Power Output

The CORSAIR RM850x offers an impressive 850W of power, making it suitable for high-performance systems and demanding components. In contrast, the be quiet! System Power 11 provides a solid 750W. While 750W is often sufficient for most gaming and productivity builds, the additional 100W from the RM850x could make a significant difference for users with multiple high-end graphics cards or overclocked CPUs. Therefore, for users requiring higher power output, the RM850x is the better option.

Efficiency Ratings

The efficiency ratings of these power supplies reveal important differences. The CORSAIR RM850x boasts a Cybenetics Gold certification with an efficiency rating of up to 91%, which translates to lower power consumption and less heat generation. Meanwhile, the be quiet! System Power 11 has an 80 PLUS Bronze certification with an efficiency of up to 90%. While both units are efficient, the RM850x takes the lead with a slightly higher efficiency, which can contribute to savings on electricity bills over time, especially in high-load scenarios.

Noise Levels

Noise levels are a critical consideration for many PC builders, particularly those who prioritise a quiet computing experience. The CORSAIR RM850x is designed to be a low-noise power supply, but specific decibel ratings are not provided. The be quiet! System Power 11, on the other hand, features a temperature-controlled 120mm fan that delivers a remarkably quiet operation at this price level. For consumers who value a silent experience, the System Power 11 may have the edge, although both products aim to minimise noise.

Build Quality and Design

When it comes to build quality and design, the CORSAIR RM850x presents itself with fully modular cabling, allowing users to connect only the cables necessary for their system. This not only enhances aesthetics but also improves airflow within the case. In contrast, the be quiet! System Power 11 also includes native integration of the 12V-2x6 connector for next-generation graphics cards and offers PCIe 6+2-pin connectors. While both power supplies are designed with user convenience in mind, the fully modular design of the RM850x may appeal to those looking for a cleaner installation.

Compatibility and Future-Proofing

Compatibility is vital when selecting a power supply, especially as technology evolves. The CORSAIR RM850x is ATX 3.1 compliant and supports PCIe 5.1, making it highly compatible with the latest graphics cards. The be quiet! System Power 11 is also an ATX 3.1 PSU, providing native support for the 12V-2x6 connector. Both options are well-equipped for current and next-generation components. However, the RM850x’s higher wattage and advanced compliance may provide an edge for those who are planning to upgrade their systems frequently.

Safety Features

Safety is paramount in power supplies, and both the CORSAIR RM850x and the be quiet! System Power 11 come with essential safety protections. The System Power 11 incorporates protections against overcurrents, over- and undervoltages, overtemperature, short circuits, and overloads, ensuring that your components remain safe during operation. The RM850x also offers reliability and safety, but specific safety features are not detailed in the provided information. Overall, both power supplies are designed with user safety in mind, making them reliable choices.

Which should you buy?

Choosing between the CORSAIR RM850x and the be quiet! System Power 11 ultimately depends on your specific needs and budget. If you require higher wattage, superior efficiency, and a fully modular design, the RM850x is worth the investment at £124.40. However, if you are looking for a more budget-friendly option with solid performance, the System Power 11 at £64.99 delivers excellent value with its reliable power output and quiet operation. Assess your system requirements and personal preferences to make an informed decision.