CORSAIR RM850e vs be quiet! System Power 11 750W Power Supply

Price Comparison

When it comes to price, the be quiet! System Power 11 750W Power Supply is more budget-friendly at £64.99 compared to the CORSAIR RM850e, which retails at £85.99. This represents a significant saving of £21 for those who are looking to keep costs down while still ensuring reliable power for their systems. The difference in price can be crucial for users assembling a new build or upgrading an existing one, meaning the be quiet! option provides excellent value without sacrificing essential features.

Power Output

The CORSAIR RM850e offers a robust output of 850W, making it suitable for high-performance systems that demand significant power, especially when running multiple GPUs or overclocked components. In contrast, the be quiet! System Power 11 provides 750W, which is still ample for many gaming and productivity setups, but it may limit users with more demanding power requirements. The higher wattage of the CORSAIR model may appeal to enthusiasts planning extensive upgrades in the future.

Efficiency Ratings

The be quiet! System Power 11 boasts an 80 PLUS Bronze certification, indicating an efficiency rating of up to 90%, which is commendable for a power supply in its class. While the efficiency rating of the CORSAIR RM850e is not explicitly stated, it is Intel ATX 3.1 certified, which suggests it adheres to modern efficiency standards. Users prioritising energy efficiency may find the be quiet! model slightly more appealing due to its clear certification, which confirms its performance in power saving.

Cooling Technology

Cooling technology is critical for maintaining performance and longevity in power supplies. The CORSAIR RM850e features a 120mm rifle bearing fan designed to operate quietly, even under full load, which is essential for maintaining a peaceful working environment. Meanwhile, the be quiet! System Power 11 also includes a temperature-controlled 120mm fan, renowned for its low noise operation. Both models incorporate effective cooling solutions, but the CORSAIR's focus on quiet operation at maximum load might be a stronger selling point for noise-sensitive users.

Modular Design

The CORSAIR RM850e is a fully modular power supply, allowing users to connect only the cables necessary for their specific build. This feature not only simplifies cable management but also enhances airflow within the case, which can contribute to better cooling performance. The be quiet! System Power 11, while providing both native and PCIe 6+2-pin connectors, does not specify its modularity level. For users who value customisation and clean builds, the RM850e’s fully modular design offers clear advantages.

Compatibility with Next-Gen Technology

Both power supplies are designed with future-proofing in mind, complying with the ATX 3.1 standard. The CORSAIR RM850e supports PCIe 5.1, making it compatible with the latest graphics cards and components, which is a significant advantage for gamers and PC builders looking to invest in cutting-edge technology. The be quiet! System Power 11 also includes support for next-generation PCIe graphics cards and handles power excursions effectively, but it may not have the same level of longevity assurance for ultra-high-end setups as the CORSAIR unit.

Safety Features

Safety features are paramount in a power supply, and both models come equipped with various protections. The be quiet! System Power 11 includes safeguards against overcurrents, over- and undervoltages, overtemperature, short circuits, and overloads, ensuring components remain safe under heavy use. While the CORSAIR RM850e doesn’t detail its safety features, its reputation and brand quality suggest a similar level of protection. For users concerned about the safety of their components, both power supplies offer reliable protection mechanisms.

Which should you buy?

Choosing between the CORSAIR RM850e and the be quiet! System Power 11 ultimately hinges on your specific needs and budget. If you require higher wattage, a fully modular design, and priority on quiet operation under load, the CORSAIR RM850e is the better option, albeit at a higher price of £85.99. However, for users looking for a more cost-effective solution that still delivers solid performance and efficiency, the be quiet! System Power 11 at £64.99 is a highly attractive alternative. Both power supplies are strong contenders, but your choice should align with your power needs, budget constraints, and preferences for features.