Microsoft Surface 24W Power Supply vs JUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan
Updated August 2026 — The JUSTOP Black 700W Power Supply Unit is the better choice for high-performance needs, while the Microsoft Surface 24W Power Supply is ideal for basic charging requirements.
The JUSTOP Black 700W Power Supply Unit is the better choice for high-performance needs, while the Microsoft Surface 24W Power Supply is ideal for basic charging requirements.
Why Microsoft Surface 24W Power Supply is better
price
Lower price at £23.75
size
Compact and lightweight design
compatibility
Designed specifically for Microsoft devices
Why JUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan is better
power output
700W capacity for high-performance systems
safety features
Extensive safety protections included
cooling
Includes a 120mm quiet cooling fan
Overall score
Specifications
| Spec | Microsoft Surface 24W Power Supply | JUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan |
|---|---|---|
| Brand | Microsoft | JUSTOP |
| Model | KVG-00010 | N/A |
| Voltage | N/A | 220-240VAC |
| Protection | Basic | OVP, UVP, OLP, OPP, SCP |
| Connectors | N/A | Multiple including 24-pin |
Dimension comparison
Overview of the Products
The Microsoft Surface 24W Power Supply and the JUSTOP Black 700W Power Supply Unit cater to different power needs and user bases. The Surface power supply is designed specifically for Microsoft devices, offering a modest power output, while the JUSTOP unit is aimed at users building or upgrading desktop PCs, providing substantial wattage and additional features.
At a price of £23.75, the Microsoft Surface 24W Power Supply is an affordable option for those requiring a replacement charger for their Surface devices. In contrast, the JUSTOP unit, priced at £29.95, delivers a robust 700W, making it suitable for high-performance systems. The distinct target markets and specifications set these two products apart significantly.
Power Output Comparison
The Microsoft Surface 24W Power Supply offers a power output of 24W, which is sufficient for charging lightweight devices such as tablets or small laptops. This level of power is ideal for users looking for a reliable charger without the need for extensive power management.
On the other hand, the JUSTOP Black 700W Power Supply Unit delivers a significant boost with its 700W capacity. This makes it suitable for high-performance gaming rigs or workstations that require more substantial power, especially when used with multiple components like graphics cards and additional drives. The stark difference in power output illustrates the specific use cases each product is designed to serve.
Design and Build Quality
The Microsoft Surface 24W Power Supply features a compact and lightweight design, making it easy to transport and store. This design is particularly beneficial for users who often travel with their Surface devices, providing convenience without compromising on quality.
Conversely, the JUSTOP Black 700W Power Supply boasts a robust build aimed at desktop environments. It includes a 120mm quiet cooling fan, which not only enhances its cooling efficiency but also ensures lower noise levels during operation. This design consideration is essential for users who prefer a quieter computing experience, especially in gaming or office setups where noise can be distracting.
Compatibility and Connectivity
The Microsoft Surface 24W Power Supply is designed specifically for Microsoft devices, ensuring seamless compatibility with various models within the Surface range. This focused compatibility makes it a straightforward choice for users of these devices, as they can be assured of optimal performance without concerns over connection issues.
In contrast, the JUSTOP Black 700W Power Supply Unit is compatible with Intel ATX 12V v.2.3 and EPS 12V v.2.92 standards, making it versatile for various desktop builds. It includes multiple connectors, such as a 24-pin main connector and several SATA connectors, catering to a wide range of hardware configurations. This broad compatibility is a key advantage for users looking to customise their systems.
Safety Features
Both power supplies incorporate essential safety features, but they differ significantly in scope. The Microsoft Surface 24W Power Supply ensures basic safety for low-power devices, providing a reliable solution for users concerned about the safety of their charging needs.
The JUSTOP Black 700W Power Supply Unit, however, offers an extensive range of safety features, including over voltage protection, over power protection, short circuit protection, and thermal overload cut-off protection. These features are crucial for maintaining system stability and protecting valuable components in high-power environments, making this power supply a safer choice for demanding users.
Cooling Mechanisms
Cooling is a critical factor in power supply performance, particularly for high-wattage units. The Microsoft Surface 24W Power Supply does not require advanced cooling mechanisms due to its lower power output, making it simple yet effective for its intended use.
In contrast, the JUSTOP Black 700W Power Supply Unit is equipped with a 120mm cooling fan designed to enhance airflow and reduce heat buildup. This feature not only prolongs the unit's lifespan but also maintains overall system performance, especially under heavy loads. Users looking to build high-performance systems will find this cooling capability essential.
Price and Value Proposition
Priced at £23.75, the Microsoft Surface 24W Power Supply provides good value for users needing a reliable charger for their Surface devices. Its affordable price point and targeted design for specific models make it an attractive option for those who prioritise simplicity and effectiveness.
The JUSTOP Black 700W Power Supply Unit, at £29.95, offers a higher price point but justifies this with its extensive features and capabilities. With a focus on performance and safety, this power supply is aimed at users looking to enhance their desktop systems. The additional wattage and connectors, along with robust safety features, position it as a valuable investment for serious builders.
Which should you buy?
Choosing between the Microsoft Surface 24W Power Supply and the JUSTOP Black 700W Power Supply Unit ultimately depends on your specific needs. If you require a simple, effective power supply for a Microsoft Surface device, the Microsoft option is an ideal choice due to its focused design and affordability.
However, if you are building or upgrading a desktop PC that demands higher power output and additional features, the JUSTOP unit stands out as a superior option. Its impressive 700W capacity, extensive compatibility, and safety features make it well-suited for demanding applications. Consider your power needs and usage scenarios carefully before making a decision.
versusfinder.com is a participant in the Amazon Services LLC Associates Programme and the Amazon EU Associates Programme. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.

