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PUSOKEI Power Supply for vs JUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan

Updated August 2026The PUSOKEI Power Supply is ideal for low-power, budget-conscious users, while the JUSTOP Black 700W offers superior power, safety, and cooling for high-performance PC builds.

The PUSOKEI Power Supply is ideal for low-power, budget-conscious users, while the JUSTOP Black 700W offers superior power, safety, and cooling for high-performance PC builds.

Why PUSOKEI Power Supply for is better

Price

£11.77 vs £29.95

Lightweight

Plastic shell is lightweight and corrosion resistant

Quiet operation

Minimalist design operates quietly without fan

Why JUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan is better

Power output

700W vs 15W

Safety features

Multiple protections and certifications (CE, FCC, UL, TUV)

Cooling

120mm quiet fan with 40dBA noise rating

Overall score

PUSOKEI Power Supply for
40
JUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan
85

Specifications

SpecPUSOKEI Power Supply forJUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan
Power Output15W (5V, 3A)700W
Cooling FanNone120mm quiet fan (40dBA)
CompatibilityRaspberry Pi 3B+/3B/2B (Micro USB)Intel ATX 12V v2.3, EPS 12V v2.92
Safety CertificationsNone specifiedCE, FCC, UL, TUV
Price£11.77£29.95
MaterialPlastic shell, corrosion resistantStandard ATX PSU build with certifications
Cord Length95cmVaried connectors lengths (up to 970mm)

Dimension comparison

PUSOKEI Power Supply forJUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan

Price Comparison

When it comes to pricing, PUSOKEI's Power Supply is significantly more affordable at £11.77 compared to JUSTOP's Black 700W Power Supply Unit, which is priced at £29.95. This difference of £18.18 could be a deciding factor for budget-conscious consumers, especially those looking for a basic power supply solution. The PUSOKEI is suitable for smaller devices like the Raspberry Pi, while the JUSTOP is designed for more demanding setups, such as desktop PCs. Therefore, the price reflects the intended use and capacity of each product.

Power Output

The power output of these two products caters to different needs. The PUSOKEI Power Supply delivers a stable 5V at 3A, equating to a total power output of 15W. In contrast, the JUSTOP Black 700W boasts a much higher output at 700W, making it suitable for high-performance systems. This substantial difference in wattage indicates that while the PUSOKEI is ideal for low-power applications, the JUSTOP is built to support demanding components like graphics cards and multiple drives.

Cooling Features

Cooling mechanisms are crucial for maintaining performance and longevity in power supplies. The JUSTOP model features a 120mm quiet cooling fan, designed to ensure efficient airflow while minimising noise, rated at 40dBA. This enhances the overall user experience, especially in gaming or high-performance environments. On the other hand, the PUSOKEI lacks any specific cooling feature, which is acceptable given its lower power requirements. However, for users seeking a reliable power supply for intense computing tasks, the cooling capabilities of the JUSTOP make it a superior choice.

Compatibility

Compatibility is an essential factor when selecting a power supply, and both products cater to different systems. The PUSOKEI Power Supply is specifically designed for Raspberry Pi models 3B+/3B/2B, featuring a micro USB interface. This targeted design makes it a perfect match for users with these devices. Conversely, the JUSTOP Black 700W is compatible with Intel ATX 12V v.2.3 and EPS 12V v.2.92 standards, making it versatile for various desktop setups. This broad compatibility allows users to build or upgrade systems with ease, showcasing the JUSTOP as a more flexible option for general-purpose computing.

Safety Features

Safety features are paramount in ensuring the reliability of power supplies. The JUSTOP Power Supply is equipped with multiple protective measures, including over voltage protection, over power protection, short circuit protection, and thermal overload cut-off protection. These features provide peace of mind for users operating high-performance systems. In contrast, the PUSOKEI Power Supply does not specify any safety certifications or protective features, which may raise concerns for users considering it for anything beyond basic applications.

Build Quality

Build quality can significantly affect the durability and performance of a power supply. The PUSOKEI Power Supply boasts a good-quality plastic shell that is corrosion-resistant, durable, and lightweight. This makes it suitable for casual use. However, the JUSTOP Black 700W is built to a higher standard, with safety agency approvals from CE, FCC, UL, and TUV, indicating that it meets rigorous safety and quality benchmarks. This builds confidence in its long-term reliability, especially in high-demand settings.

User Experience

User experience can often be dictated by both performance and noise levels. The PUSOKEI Power Supply operates quietly due to its minimalist design, which can be advantageous for users seeking a silent operation. However, the JUSTOP model, with its 120mm quiet fan, specifically caters to users who require reliable cooling while maintaining a low noise level. The enhanced airflow and quiet operation make the JUSTOP a better option for those building gaming rigs or workstations where noise could be an issue.

Which should you buy?

Choosing between the PUSOKEI Power Supply and the JUSTOP Black 700W Power Supply Unit boils down to your specific needs. If you're looking for an economical power supply for devices like the Raspberry Pi, the PUSOKEI at £11.77 is an excellent choice. However, if you're building a high-performance PC that requires a robust power supply with extensive safety features and cooling capabilities, the JUSTOP model at £29.95 is the superior option. Ultimately, the decision hinges on the intended application and the required power output.

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PUSOKEI Power Supply for vs JUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan | versusfinder