be quiet! Pure Power 13 M 1000W Power Supply vs JUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan

Overview of the Products

In this comparison, we will examine the be quiet! Pure Power 13 M 1000W Power Supply and the JUSTOP Black 700W Power Supply Unit. Priced at £99.99 and £29.95 respectively, these power supplies cater to different user needs and budgets. The be quiet! model offers high wattage and efficiency, while the JUSTOP model is aimed at budget-conscious users seeking essential performance.

The be quiet! Pure Power 13 M boasts a substantial 1000W output, certified with an 80 PLUS Gold rating, indicating its efficiency of up to 94.4%. This makes it an excellent choice for high-performance systems, particularly gaming PCs. In contrast, the JUSTOP Black provides a respectable 700W output, with a basic efficiency of 70%, making it suitable for standard desktop builds without high power demands.

Efficiency and Performance

Efficiency is a crucial factor when selecting a power supply, and in this regard, the be quiet! Pure Power 13 M clearly stands out. It features an 80 PLUS Gold certification with an efficiency rating of up to 94.4%. This translates to lower energy consumption and reduced electricity costs, making it a more environmentally friendly option.

On the other hand, the JUSTOP Black offers a lower efficiency rating of 70%. While this is adequate for basic computing needs, it means that users may experience higher energy costs over time compared to the be quiet! model. For those who prioritise efficiency in their builds, the be quiet! Pure Power 13 M is the superior choice.

Power Output and Capability

The power output of a power supply is perhaps its most critical specification, and here the be quiet! Pure Power 13 M takes the lead with a robust 1000W. This ensures that even power-hungry components, such as high-end graphics cards, can operate without issues. The be quiet! model also features a single massive 12V rail, capable of handling power excursions that may double its rated output.

In contrast, the JUSTOP Black provides a maximum power output of 700W, which may be sufficient for average users but could be limiting for those with high-performance components. The single 8-pin (4+4) 12V rail in the JUSTOP model offers stability, but the overall capacity is significantly lower than that of the be quiet! Pure Power 13 M, making it less suitable for future upgrades or demanding applications.

Noise Levels and Cooling

When it comes to noise levels, the be quiet! Pure Power 13 M is engineered for quiet operation, featuring a fan that turns off completely under low load conditions. This design not only enhances silence during light use but also allows for a quieter experience during demanding operations, thanks to its airflow-optimised fan blades.

The JUSTOP Black includes a 12CM cooling fan designed to maintain lower noise levels, but it operates at a noise level of 40dBA. While this is manageable, it may not match the silent performance of the be quiet! model, particularly in quieter systems. Users who value a noise-free environment will find the be quiet! Pure Power 13 M more appealing.

Connectivity and Modular Design

Cable management is an important consideration for many builders, and the be quiet! Pure Power 13 M excels with its modular design, allowing users to exclude unnecessary cables for a cleaner setup. This results in improved airflow within the case, leading to lower temperatures and noise.

In comparison, the JUSTOP Black has a traditional non-modular design, which may lead to excess cables cluttering the build. While it comes equipped with a variety of connectors, including a 24-pin and multiple SATA connections, the absence of modularity could hinder overall system organisation and airflow efficiency.

Safety Features

Safety is paramount when it comes to power supplies, and both models offer essential protective features. The be quiet! Pure Power 13 M employs LLC topology for optimal voltage regulation and efficiency, ensuring reliable performance under various load conditions. It is designed to handle power excursions effectively, providing peace of mind for users with high-performance systems.

The JUSTOP Black also boasts a range of protections, including over voltage protection, thermal overload cut-off, and short circuit protection. While these features are commendable, the overall safety profile of the be quiet! model, coupled with its higher efficiency, makes it a more robust choice for demanding applications.

Pricing and Value for Money

When evaluating value for money, the pricing difference between the two models is significant. The be quiet! Pure Power 13 M retails at £99.99, reflecting its premium features, high efficiency, and robust power output. For users building high-performance gaming or workstation PCs, this investment can translate into long-term savings on energy bills and enhanced system reliability.

Conversely, the JUSTOP Black is priced at a very accessible £29.95, making it an attractive option for budget-conscious consumers or those with modest power needs. However, the lower price comes with concessions in terms of efficiency and output capability, potentially leading to higher operational costs over time.

Which should you buy?

In conclusion, the choice between the be quiet! Pure Power 13 M 1000W Power Supply and the JUSTOP Black 700W Power Supply Unit largely depends on your individual needs and budget. If you're building a high-performance system with demanding components, the be quiet! model is undoubtedly the better investment, offering superior efficiency, power output, and silent operation. However, if you're on a tight budget and require a basic power supply for everyday tasks, the JUSTOP Black could serve your needs adequately, albeit with some limitations in performance and long-term efficiency. Ultimately, weigh your specific requirements against your budget to make the most informed decision.