be quiet! System Power 11 750W Power Supply vs JUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan

Price Comparison

The be quiet! System Power 11 750W Power Supply is priced at £64.99, while the JUSTOP Black 700W Power Supply Unit is significantly cheaper at £29.95. This price difference of £35.04 makes the JUSTOP model a more budget-friendly option for those looking to save money. However, it's important to consider whether the lower price equates to lower performance or fewer features. The be quiet! model offers more power and advanced features that may justify its higher cost, especially for users with demanding systems.

Power Output

When it comes to power output, the be quiet! System Power 11 provides a robust 750W, outclassing the JUSTOP Black, which offers a maximum of 700W. This 50W difference may seem minor, but it can be crucial for high-performance builds that require more headroom for components like powerful graphics cards and CPUs. The System Power 11 is designed to support the latest PCIe 5.1 graphics cards and can handle power excursions up to double its rated power, making it a versatile choice for future-proofing your system.

Efficiency Ratings

Efficiency is a critical factor for any power supply, and here the be quiet! System Power 11 shines with an 80 PLUS Bronze certification, boasting an efficiency rating of up to 90.0%. In contrast, the JUSTOP Black only achieves a 70% efficiency rating. This means that while both power supplies will convert AC to DC, the be quiet! model will waste less energy and potentially lead to lower electricity bills over time. For users concerned about energy efficiency and sustainability, this is a significant advantage.

Cooling Solutions

Cooling is essential for maintaining system stability, and both models feature quiet fans. The be quiet! System Power 11 includes a temperature-controlled 120mm fan, which is designed for low noise operation. The JUSTOP Black also sports a 12CM quiet cooling fan, but lacks the advanced temperature control features of its competitor. While both fans aim to provide a quieter computing experience, the be quiet! model is specifically engineered to ensure remarkable quietness at its price level, making it a superior choice for noise-sensitive environments.

Safety Features

Safety is paramount in power supplies, and both the be quiet! System Power 11 and JUSTOP Black include a variety of protection mechanisms. The be quiet! model features comprehensive safety protections against overcurrents, over- and undervoltages, overtemperature, short circuits, and overloads. The JUSTOP Black also offers over voltage protection, over power protection, short circuit protection, and thermal overload cut-off protection. While both units are equipped with essential safety features, the be quiet! model provides a broader range of protections, which may offer peace of mind for those running high-performance setups.

Compatibility

In terms of compatibility, the be quiet! System Power 11 comes with native integration of the 12V-2x6 connector suitable for next-generation GPUs, as well as PCIe 6+2-pin connectors for current-generation cards. This ensures that it can accommodate a wide range of components. The JUSTOP Black is compatible with Intel ATX 12V v.2.3 and EPS 12V v.2.92 standards and includes various connectors like a single 8-Pin (4+4) 12V rail and multiple SATA connectors. While the JUSTOP is versatile enough for most builds, the additional features of the be quiet! model may make it more future-proof for users planning to upgrade their hardware.

Brand Reputation

Brand reputation can influence consumer choices significantly. be quiet! is well-known for its focus on producing high-quality, reliable, and quiet power supplies, earning a strong following among PC enthusiasts. Conversely, JUSTOP is a less established brand in the power supply market. While it offers a cost-effective solution, its reputation may not inspire the same level of confidence as be quiet!. For users prioritising brand trust and product longevity, the be quiet! model is likely to be the more reassuring choice.

Which should you buy?

Choosing between the be quiet! System Power 11 750W and the JUSTOP Black 700W Power Supply ultimately depends on your specific needs and budget. If you're looking for a reliable, efficient power supply with a higher wattage and advanced features, the be quiet! System Power 11 at £64.99 is worth the investment. However, if you're on a tight budget and need a basic power supply for a standard build, the JUSTOP Black at £29.95 offers decent performance for the price. Assessing your system requirements and future upgrade plans will help guide your decision effectively.