NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - 80 PLUS Gold - Cybenetics Plat vs be quiet! System Power 11 750W Power Supply

Overview of the Products

The NZXT C850 Gold Core and be quiet! System Power 11 are both ATX power supplies designed to meet the demands of modern gaming and high-performance PCs. The NZXT C850 Gold Core, priced at £89.99, offers a higher wattage of 850W, while the be quiet! System Power 11 is rated at 750W and is available for £64.99. Both units are ATX 3.1 certified and equipped to support next-generation graphics cards, but they differ significantly in efficiency and features.

Power Output

The NZXT C850 Gold Core boasts an output of 850W, which is beneficial for users looking to build high-end systems with multiple GPUs or additional components. In contrast, the be quiet! System Power 11 provides 750W, which is still substantial but may limit some users with particularly power-hungry setups. For those planning to use cutting-edge hardware, the extra 100W from the NZXT could be a crucial factor in ensuring stability and performance under heavy loads.

Efficiency Ratings

The efficiency ratings of these power supplies offer a significant distinction. The NZXT C850 Gold Core is certified 80 PLUS Gold, indicating it operates with high efficiency, minimising both heat production and electricity costs. This model promises energy savings that are particularly advantageous at demanding loads. Conversely, the be quiet! System Power 11 holds an 80 PLUS Bronze certification, with an efficiency rating of up to 90%. While this is respectable, the Gold rating of the NZXT suggests that it will perform more efficiently across a wider range of conditions.

Noise Levels

Noise operation is a key consideration for many users, especially in gaming or workstation environments. The NZXT C850 Gold Core features a Cybenetics noise certification that guarantees near-silent performance, rated at A++ for its <15 dBA operation. This makes it an excellent choice for users prioritising quiet computing. On the other hand, the be quiet! System Power 11 is also designed for low noise levels, equipped with a temperature-controlled 120mm fan, but does not specify a noise level as low as that of the NZXT. For those who value silence, the NZXT may have the edge.

Compatibility with Graphics Cards

Both power supplies are equipped to handle the latest generations of graphics cards. The NZXT C850 Gold Core is specifically designed to support NVIDIA graphics cards through its dual-colour 12V-2x6 connector, making it future-proof for next-gen builds. It also accommodates AMD GPUs effectively with its additional PCIe connections. The be quiet! System Power 11, meanwhile, offers native support for PCIe 5.1 graphics cards and includes PCIe 6+2-pin connectors for current-generation GPUs. Users can expect solid compatibility from either option, although the NZXT's higher output may lend itself better to more ambitious setups.

Cooling Solutions

Cooling performance can significantly impact the longevity and reliability of power supplies. The NZXT C850 Gold Core utilises a 135 mm fluid dynamic bearing fan, which remains efficient and quiet during operation, featuring a Zero RPM mode for light workloads. This not only enhances cooling but also contributes to its low noise levels. Conversely, the be quiet! System Power 11 employs a standard 120mm fan, which is also designed for low noise but may not offer the same level of efficiency or quiet operation as the NZXT's fan. For users prioritising advanced cooling solutions, the NZXT may prove to be the superior choice.

Safety Features

Safety is paramount in power supply design, and both models come equipped with essential protection mechanisms. The NZXT C850 Gold Core includes safeguards against common electrical issues, ensuring stable and reliable power delivery. The be quiet! System Power 11 also offers comprehensive safety protections, including overcurrent, over- and undervoltages, overtemperature, short circuits, and overloads. While both units provide robust safety features, the be quiet! System Power 11 is specifically noted for its ability to handle power excursions up to double its rated power, showcasing its versatility and reliability under extreme conditions.

Value for Money

When it comes to price, the be quiet! System Power 11 is significantly more affordable at £64.99 compared to the NZXT C850 Gold Core, which retails for £89.99. For users on a budget or those with less demanding system requirements, the be quiet! option presents a compelling value proposition. However, for those seeking high efficiency, superior cooling, and future-proofing capabilities, the additional investment in the NZXT may be justified. Ultimately, the decision hinges on individual needs and budget constraints.

Which should you buy?

Choosing between the NZXT C850 Gold Core and the be quiet! System Power 11 largely depends on your specific requirements. The NZXT C850 Gold Core is an excellent choice for high-performance systems needing robust power output and superior efficiency, as well as quieter operation. On the other hand, the be quiet! System Power 11 offers solid performance and excellent value for those with moderate power needs or tighter budgets. If your focus is on maximum performance and future-proofing, the NZXT is the way to go, while the be quiet! PSU is a reliable and economical option for less demanding setups.