vsversusfinder

JUSTOP Black 650W PSU vs Cooler Master MWE 750 Gold V2 Fully Modular PSU

Updated August 2026The Cooler Master MWE 750 Gold V2 outperforms the JUSTOP Black 650W PSU in efficiency, modular design, and connector variety, making it the better choice for demanding setups.

The Cooler Master MWE 750 Gold V2 outperforms the JUSTOP Black 650W PSU in efficiency, modular design, and connector variety, making it the better choice for demanding setups.

Why JUSTOP Black 650W PSU is better

affordable price

JUSTOP is significantly cheaper at £29.99

basic safety features

Includes essential protections like over voltage and short circuit protection

sufficient power

650W is adequate for basic setups

Why Cooler Master MWE 750 Gold V2 Fully Modular PSU is better

higher power output

750W supports more demanding systems

better efficiency

80 PLUS Gold certification ensures up to 90% efficiency

fully modular design

Improves cable management and airflow

Overall score

JUSTOP Black 650W PSU
45
Cooler Master MWE 750 Gold V2 Fully Modular PSU
85

Specifications

SpecJUSTOP Black 650W PSUCooler Master MWE 750 Gold V2 Fully Modular PSU
BrandJUSTOPCooler Master
Current Price£29.99£141.41
Safety FeaturesBasic protectionsRobust protections
Fan TypeStandardHydro-dynamic
Connector VarietyLimitedExtensive

Dimension comparison

JUSTOP Black 650W PSUCooler Master MWE 750 Gold V2 Fully Modular PSU

Introduction

In the competitive world of power supplies, the JUSTOP Black 650W PSU and the Cooler Master MWE 750 Gold V2 are two notable options with distinct features and price points. The JUSTOP PSU is priced at £29.99, making it an economical choice, while the Cooler Master model comes in at £141.41, reflecting its higher specifications and efficiency. This article will delve into various aspects of both products to help you make an informed decision.

Power Output

The power output is a crucial factor when selecting a power supply, and in this comparison, the Cooler Master MWE 750 Gold V2 offers a higher output of 750W compared to the 650W provided by the JUSTOP Black PSU. A higher wattage is beneficial for users with demanding setups, particularly those involving high-performance graphics cards or multiple components. The 100W difference could mean the Cooler Master is more suitable for gamers or professionals who push their systems to the limit, especially in demanding tasks such as 3D rendering.

Efficiency Rating

Efficiency matters significantly in power supplies, and the Cooler Master MWE 750 Gold V2 shines with its 80 PLUS Gold certification, boasting up to 90% efficiency under typical loads. This is particularly advantageous for gaming systems with high energy demands, as it not only saves on utility costs but also reduces heat generation. In contrast, the JUSTOP Black PSU does not specify an efficiency rating, which may imply less focus on energy efficiency. Thus, for users looking to optimise performance and reduce energy consumption, the Cooler Master is the clear winner.

Modular Design

The design and cable management of a power supply can significantly affect system build aesthetics and airflow. The Cooler Master MWE 750 Gold V2 features fully modular flat black cabling, allowing users to connect only the cables they need. This design not only enhances the appearance of the build but also improves internal ventilation by minimising clutter. On the other hand, the JUSTOP Black PSU does not indicate a modular design, which could lead to unnecessary cables obstructing airflow. For those prioritising a clean build and optimal cooling, the Cooler Master offers a superior solution.

Cooling Systems

Cooling performance is essential for maintaining the longevity of computer components. The Cooler Master MWE 750 Gold V2 incorporates a 120 mm hydro-dynamic bearing (HDB) fan that adjusts its speed in response to temperature changes, effectively reducing noise and conserving power during low-demand periods. Conversely, the JUSTOP Black PSU also includes a 120mm cooling fan, but lacks the advanced features of the Cooler Master’s fan. For users concerned about noise and temperature management, the Cooler Master provides a more sophisticated cooling solution.

Connector Variety

When it comes to compatibility with various components, the number and type of connectors offered by a power supply are vital. The Cooler Master MWE 750 Gold V2 excels with a wide variety of connectors, including 2 EPS connectors and a total of 12 SATA connectors, making it highly versatile for diverse setups. The JUSTOP Black PSU, while functional with its 20+4 pin and several other connectors, does not match the breadth of options provided by the Cooler Master. For users planning a more complex build or requiring extensive connectivity, the Cooler Master’s offerings are significantly more advantageous.

Safety Features

Safety is paramount when choosing a power supply, and both models come equipped with protective features. The JUSTOP Black PSU includes over voltage protection, over power protection, short circuit protection, and thermal overload cut-off protection, ensuring reliable operation. The Cooler Master MWE 750 Gold V2 also provides robust safety measures, although specific details on its safety features are not highlighted. While both power supplies are designed with safety in mind, the lack of detailed safety specifications for the Cooler Master makes it harder to ascertain its level of protection compared to the clearly stated features of the JUSTOP.

Price Consideration

In terms of pricing, the JUSTOP Black 650W PSU is significantly more affordable at £29.99, making it an attractive option for budget-conscious consumers who need a basic PSU for their systems. The Cooler Master MWE 750 Gold V2, priced at £141.41, reflects its higher output, efficiency, and modular design. However, users must weigh the cost against the features provided. For those who require a powerful, efficient, and feature-rich power supply, the investment in the Cooler Master may be justified, while the JUSTOP serves well for simpler setups.

Which should you buy?

Ultimately, the choice between the JUSTOP Black 650W PSU and the Cooler Master MWE 750 Gold V2 depends on your specific needs and budget. If you are looking for an economical power supply for a basic setup, the JUSTOP Black PSU is a solid choice with sufficient power and essential safety features. However, if you are a gamer or a professional needing a reliable, high-efficiency power supply that can handle demanding tasks, the Cooler Master MWE 750 Gold V2 is worth the investment for its superior performance, modular design, and extensive connector options.

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.

JUSTOP Black 650W PSU vs Cooler Master MWE 750 Gold V2 Fully Modular PSU | versusfinder