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JUSTOP Black 750W PSU vs MSI MAG A1000GLS PCIE5 Power Supply Unit

Updated August 2026The MSI MAG A1000GLS PCIE5 Power Supply Unit offers superior performance and features compared to the JUSTOP Black 750W PSU, making it the better choice for high-demand systems.

The MSI MAG A1000GLS PCIE5 Power Supply Unit offers superior performance and features compared to the JUSTOP Black 750W PSU, making it the better choice for high-demand systems.

Why JUSTOP Black 750W PSU is better

price

JUSTOP is significantly cheaper at £32.95.

basic features

Offers essential safety features.

connector variety

Provides a wider range of connectors.

Why MSI MAG A1000GLS PCIE5 Power Supply Unit is better

power output

MSI delivers up to 1000W compared to JUSTOP's 750W.

efficiency

MSI has 80 PLUS Gold certification for better efficiency.

safety features

MSI includes a more comprehensive safety suite.

Overall score

JUSTOP Black 750W PSU
60
MSI MAG A1000GLS PCIE5 Power Supply Unit
85

Specifications

SpecJUSTOP Black 750W PSUMSI MAG A1000GLS PCIE5 Power Supply Unit
BrandJUSTOPMSI
Safety FeaturesBasic protectionsComprehensive protections
Connector TypeVarietyNative PCIe 5.1
Cooling Type120mm fan135mm FDB fan
Form FactorStandard ATXCompact ATX

Dimension comparison

JUSTOP Black 750W PSUMSI MAG A1000GLS PCIE5 Power Supply Unit

Price Comparison

When it comes to price, the JUSTOP Black 750W PSU is significantly more affordable at £32.95 compared to the MSI MAG A1000GLS PCIE5 Power Supply Unit, which is priced at £104.99. This represents a considerable difference of £72.04, making the JUSTOP a more budget-friendly option for those looking to power their systems without breaking the bank. The substantial cost difference may be a deciding factor for many consumers, especially those building or upgrading a mid-range PC.

Power Output and Efficiency

In terms of power output, the MSI MAG A1000GLS offers a more robust performance with its capability of delivering up to 1000W, while the JUSTOP Black 750W PSU provides 750W. This 250W difference means that the MSI unit is better suited for high-performance systems, particularly those with demanding GPUs and CPUs. Moreover, the MSI's 80 PLUS Gold certification indicates that it operates with an efficiency of up to 90%, making it a more energy-efficient option in the long run compared to the JUSTOP, which does not specify its efficiency rating.

Cooling and Noise Levels

The MSI MAG A1000GLS features a 135 mm Fluid-dynamic bearing fan designed to maintain low noise levels, ensuring a peaceful computing experience. In contrast, the JUSTOP Black 750W PSU is equipped with a 120 mm cooling fan, but it does not highlight any specific noise reduction features. For users prioritising a quieter operation, especially in environments where noise sensitivity is crucial, the MSI might be the superior choice due to its emphasis on low-noise operation.

Safety Features

Both power supplies come equipped with multiple safety features, but they differ in the extent of protection offered. The JUSTOP Black 750W PSU includes over voltage protection, over power protection, short circuit protection, and thermal overload cut-off protection. On the other hand, the MSI MAG A1000GLS boasts a more comprehensive safety suite, including overcurrent protection (OCP), over temperature protection (OTP), over power protection (OPP), short circuit protection (SCP), over voltage protection (OVP), under voltage protection (UVP), surge immunity protection (SIP), and no load operation (NLO) protection. This extensive range of protective measures makes the MSI a potentially safer option for high-demand systems.

Connector Options

In terms of connector variety, the JUSTOP Black 750W PSU offers a decent selection, including 1x 24-Pin (20+4), 1x 8-Pin 12V (4+4), 6x SATA, 1x 4-Pin Molex, and 1x 8-Pin PCI-E (6+2). This allows for compatibility with a range of components. Conversely, the MSI MAG A1000GLS is equipped with native 12V-2x6 PCIe connectors, enabling it to deliver 600W specifically for PCIe 5.1 GPUs. While the JUSTOP provides a wider variety of connectors, the MSI's specific focus on high-capacity PCIe connections makes it more future-proof for users planning to utilise the latest graphics technology.

Build Quality and Design

Build quality is essential for power supplies, and the MSI MAG A1000GLS showcases a durable design with an LLC half-bridge and DC-to-DC converter, ensuring reliable output. It is also compact at 150 mm in length and width, which aids in compatibility with various PC cases and enhances airflow management. Meanwhile, the JUSTOP Black 750W PSU does not provide explicit details on its build quality or design features. For users who value robustness and space efficiency, the MSI unit appears to be the more appealing choice.

Brand Reputation

Brand reputation can influence purchasing decisions, and both JUSTOP and MSI have established themselves in the market. MSI is particularly well-known for its gaming hardware and components, which may instil confidence in consumers looking for high-performance solutions. JUSTOP, while respected, does not have the same level of recognition in the power supply segment. This may lead some users to gravitate towards the MSI MAG A1000GLS simply based on brand trust and reliability.

Which should you buy?

In conclusion, the choice between the JUSTOP Black 750W PSU and the MSI MAG A1000GLS PCIE5 Power Supply Unit largely depends on your specific needs and budget. If you are looking for a cost-effective option for a mid-range build and do not require high efficiency, the JUSTOP at £32.95 is a viable choice. However, for users seeking high performance, efficiency, and extensive safety features, the MSI priced at £104.99 stands out as the better option. Ultimately, your decision should be guided by your system's requirements and your budget constraints.

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JUSTOP Black 750W PSU vs MSI MAG A1000GLS PCIE5 Power Supply Unit | versusfinder