GeeekPi USB-C Power Supply UK Plug for Raspberry Pi 4 With On/Off Switch vs JUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan
Updated August 2026 — The GeeekPi USB-C Power Supply is ideal for Raspberry Pi users seeking a dedicated and affordable option, while the JUSTOP Black 700W Power Supply is better suited for high-performance desktop systems.
The GeeekPi USB-C Power Supply is ideal for Raspberry Pi users seeking a dedicated and affordable option, while the JUSTOP Black 700W Power Supply is better suited for high-performance desktop systems.
Why GeeekPi USB-C Power Supply UK Plug for Raspberry Pi 4 With On/Off Switch is better
price
GeeekPi is cheaper at £11.99
size
Compact design for Raspberry Pi
target audience
Specifically designed for Raspberry Pi users
Why JUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan is better
power output
700W output for high-performance systems
cooling
Includes a 120mm quiet fan for effective cooling
compatibility
Compatible with a wide range of desktop components
Overall score
Specifications
| Spec | GeeekPi USB-C Power Supply UK Plug for Raspberry Pi 4 With On/Off Switch | JUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan |
|---|---|---|
| Brand | GeeekPi | JUSTOP |
| Protection | Multiple protections | OVP, UVP, OLP, OPP, SCP |
| Certification | UKCA, RoHS | CE, FCC, UL, TUV |
| Switch | On/Off switch | No switch |
| Compatibility | Raspberry Pi | ATX, EPS |
Dimension comparison
Overview of Power Supplies
When it comes to powering your devices, choosing the right power supply is essential. In this comparison, we will examine the GeeekPi USB-C Power Supply and the JUSTOP Black 700W Power Supply Unit. The GeeekPi power supply is tailored specifically for the Raspberry Pi 4, boasting a price of £11.99, while the JUSTOP power supply is a more general solution for desktop PCs, priced at £29.95. Each offers unique features that cater to different user requirements.
Design and Build Quality
The design and build quality of a power supply can significantly affect its functionality and user experience. The GeeekPi USB-C Power Supply is compact and designed specifically for use with the Raspberry Pi 4, featuring a 120cm extended cord for flexibility. In contrast, the JUSTOP Black 700W Power Supply has a more robust design, incorporating a 120mm quiet cooling fan to ensure effective heat dissipation. It adheres to various safety certifications, including CE, FCC, UL, and TUV, ensuring reliability in a desktop environment.
Compatibility
Compatibility is a crucial factor when selecting a power supply. The GeeekPi USB-C Power Supply is designed for the Raspberry Pi 4 Model B and is also compatible with Raspberry Pi 3B+ and Orange Pi models. This makes it an excellent choice for Raspberry Pi enthusiasts. On the other hand, the JUSTOP Black 700W Power Supply is compatible with Intel ATX 12V v.2.3 and EPS 12V v.2.92 standards, making it suitable for a wide range of desktop PC components. This versatility may appeal to users looking to build or upgrade their systems.
Power Output and Efficiency
The power output and efficiency of a power supply directly impact its performance. The GeeekPi USB-C Power Supply delivers a stable output of 5V and 3.6A, providing a total of 18W, which is adequate for the Raspberry Pi 4. In contrast, the JUSTOP Black 700W Power Supply offers a substantial 700W output, making it capable of powering high-performance systems with multiple components. Although the efficiency of the JUSTOP is rated at over 70%, the GeeekPi's focus on steady power delivery is vital for the stability of Raspberry Pi applications.
Cooling Mechanisms
Effective cooling is vital for maintaining optimal performance in power supplies. The JUSTOP Black 700W Power Supply features a 120mm quiet fan, allowing for efficient airflow and reducing noise levels to around 40dBA. This is particularly important for users who require a quieter computing environment. The GeeekPi USB-C Power Supply, while lacking an internal cooling fan, is designed for lower power applications, which mitigates heat generation, making external cooling less of a concern for Raspberry Pi users.
Safety Features
Safety features are paramount when considering power supplies. The GeeekPi USB-C Power Supply includes multiple protection functions such as over-current protection, short-circuit protection, and over-temperature protection, ensuring safe operation. Similarly, the JUSTOP Black 700W Power Supply is equipped with over-voltage protection, over-power protection, short-circuit protection, and thermal overload cut-off protection. Both power supplies prioritise safety, but the specific protections cater to different user needs—one for low-power devices and the other for high-performance systems.
Target Audience
Identifying the target audience for each power supply can help clarify their respective uses. The GeeekPi USB-C Power Supply is specifically designed for Raspberry Pi users, making it ideal for hobbyists and educators who require a reliable power source for their projects. On the other hand, the JUSTOP Black 700W Power Supply is aimed at gamers and professionals who need a powerful and reliable PSU to support high-performance builds. This distinction highlights the targeted functionality of each product.
Price Comparison
Price is often a decisive factor in purchasing decisions. The GeeekPi USB-C Power Supply is priced at £11.99, making it an economical choice for those specifically needing a power supply for Raspberry Pi devices. Meanwhile, the JUSTOP Black 700W Power Supply is available for £29.95, reflecting its higher output and broader compatibility with PC components. While the GeeekPi caters to a niche market, the JUSTOP provides a more versatile solution for various desktop builds, justifying its higher price point.
Which should you buy?
Deciding between the GeeekPi USB-C Power Supply and the JUSTOP Black 700W Power Supply ultimately depends on your specific needs. If you are a Raspberry Pi user seeking a dedicated, cost-effective power supply, the GeeekPi model is an excellent choice with its tailored features and lower price. However, if you require a powerful PSU for a high-performance desktop setup, the JUSTOP model offers greater versatility and output capacity. Evaluate your requirements carefully to make the right decision for your projects.
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