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JUSTOP Black 750W PSU vs Miuzei Raspberry Pi 4 Power Supply - 5V 4.1A 20.5W USB-C Charger with On/Off Swi

Updated August 2026The JUSTOP Black 750W PSU is ideal for high-performance desktop systems, while the Miuzei Raspberry Pi 4 Power Supply is a budget-friendly choice for low-power applications.

The JUSTOP Black 750W PSU is ideal for high-performance desktop systems, while the Miuzei Raspberry Pi 4 Power Supply is a budget-friendly choice for low-power applications.

Why JUSTOP Black 750W PSU is better

Power Output

750W vs 20.5W

Safety Features

Extensive protection mechanisms

Brand Reputation

Established in PC components

Why Miuzei Raspberry Pi 4 Power Supply - 5V 4.1A 20.5W USB-C Charger with On/Off Swi is better

Price

£10.99 vs £32.95

Compact Design

Lightweight and portable

Ease of Use

Plug and play with no setup

Overall score

JUSTOP Black 750W PSU
85
Miuzei Raspberry Pi 4 Power Supply - 5V 4.1A 20.5W USB-C Charger with On/Off Swi
65

Specifications

SpecJUSTOP Black 750W PSUMiuzei Raspberry Pi 4 Power Supply - 5V 4.1A 20.5W USB-C Charger with On/Off Swi
BrandJUSTOPMiuzei
Output Voltage12V5V
Protection6 types6 types
Connector TypesMultipleUSB-C
UsageDesktop PCsRaspberry Pi

Dimension comparison

JUSTOP Black 750W PSUMiuzei Raspberry Pi 4 Power Supply - 5V 4.1A 20.5W USB-C Charger with On/Off Swi

Introduction to Power Supplies

When it comes to powering your devices, selecting the right power supply unit (PSU) is crucial for performance and stability. In this article, we will compare two distinct options: the JUSTOP Black 750W PSU and the Miuzei Raspberry Pi 4 Power Supply. Each is tailored for different applications, with price points reflecting their intended uses. The JUSTOP PSU is priced at £32.95, while the Miuzei power supply is considerably more affordable at £10.99.

Power Output Comparison

The JUSTOP Black 750W PSU boasts a substantial output of 750W, making it an ideal choice for desktop PCs that require robust power, especially during intensive tasks. In contrast, the Miuzei Raspberry Pi 4 Power Supply delivers a maximum output of 5V and 4.1A, translating to 20.5W. While the Miuzei is significantly lower in power output, it is perfectly suited for the Raspberry Pi 4 and similar devices, effectively preventing undervoltage errors even under high load. This stark difference in power output highlights the distinct target markets for each power supply.

Compatibility and Use Cases

The JUSTOP PSU is designed primarily for desktop computers, featuring connectors suitable for a variety of components, including a 24-pin connector and multiple SATA connections. This makes it versatile for gamers and professionals who need a reliable power source for high-performance builds. On the other hand, the Miuzei power supply is specifically compatible with the Raspberry Pi 4, along with earlier models like the Pi 3B+ and Orange Pi devices. It even includes an adapter for micro USB, enhancing its versatility for users of older devices. Thus, your choice will hinge on whether you need a PSU for a desktop system or a compact power supply for a single-board computer.

Safety Features and Protection

Safety is paramount when it comes to power supplies, and both options offer impressive protection features. The JUSTOP Black 750W PSU includes overvoltage protection, overcurrent protection, short circuit protection, and thermal overload cut-off, ensuring a safe operation while powering demanding components. Meanwhile, the Miuzei power supply includes a 6-in-1 protection system, safeguarding against overcurrent, short circuits, and overheating. Its fire-resistant case is an added layer of security. Both products take safety seriously, but the more extensive protection mechanisms in the JUSTOP PSU make it better suited for high-stakes environments.

Design and Size

In terms of design, the JUSTOP Black 750W PSU features a robust construction with a 120mm cooling fan, which is essential for preventing overheating during prolonged use in desktop PCs. Its design is tailored for easy installation into computer cases. Conversely, the Miuzei power supply is compact and lightweight, with a 1.5m cord that allows for flexible placement and an on/off switch for convenience. This makes it ideal for users who value portability and ease of use over the bulkier design of a traditional PSU.

Price and Value

Price is a significant factor when comparing power supplies, and there is a considerable difference between the two. The JUSTOP Black 750W PSU retails for £32.95, reflecting its higher power output and suitability for demanding systems. In contrast, the Miuzei Raspberry Pi 4 Power Supply is priced at £10.99, making it an economical option for users who require a reliable power source for their Raspberry Pi devices. The value proposition depends largely on your specific needs; for high-performance systems, the JUSTOP may justify its price, while the Miuzei is an excellent budget-friendly choice for low-power applications.

User Experience and Convenience

User experience varies significantly between these two power supplies. The JUSTOP PSU, while powerful, may require more technical knowledge to install and configure within a desktop system. It is designed for users who are comfortable building or upgrading PCs. In contrast, the Miuzei power supply is designed for simplicity and ease of use, allowing users to plug it in and start using it immediately with no additional setup required. The inclusion of an on/off switch enhances user convenience, making it easy to manage power without constant plugging and unplugging.

Brand Reputation and Reliability

Brand reputation can influence purchasing decisions, and both JUSTOP and Miuzei have established themselves within their respective markets. JUSTOP is known for producing reliable components for PC building, appealing to gamers and enthusiasts who demand high performance and stability. Miuzei, on the other hand, has carved out a niche in the Raspberry Pi community, offering reliable and compatible power solutions. Both brands have their strengths, but the choice between them will depend on your specific use case and brand loyalty.

Which should you buy?

Ultimately, the decision between the JUSTOP Black 750W PSU and the Miuzei Raspberry Pi 4 Power Supply comes down to your needs. If you require a high-output PSU for a desktop computer, the JUSTOP is the clear winner with its robust features and protections. However, for those looking for an affordable, efficient power supply for a Raspberry Pi, the Miuzei provides excellent value and performance for its price. Consider your specific requirements and budget to make the best choice for your situation.

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JUSTOP Black 750W PSU vs Miuzei Raspberry Pi 4 Power Supply - 5V 4.1A 20.5W USB-C Charger with On/Off Swi | versusfinder