MSI MPG A1000G PCIE5 Power Supply Unit vs JUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan

Price Comparison

The MSI MPG A1000G PCIE5 is considerably more expensive than the JUSTOP Black 700W. Priced at £104.99, the MSI power supply unit is aimed at users seeking high efficiency and advanced features. In contrast, the JUSTOP Black is budget-friendly at just £29.95, making it an attractive option for those on a tighter budget or for standard builds. The significant price difference suggests that the MSI unit targets gamers and professionals who require more power and features, while the JUSTOP model is ideal for casual users or basic systems.

Power Output

In terms of power output, the MSI MPG A1000G leads with a robust 1000W, making it suitable for high-performance builds, especially those with demanding graphics cards. Conversely, the JUSTOP Black provides 700W, which is adequate for most standard desktop setups but may not support high-end gaming or intensive tasks efficiently. The higher wattage of the MSI unit ensures it can handle power-hungry components, offering peace of mind for users looking to push their systems to the limit.

Efficiency Ratings

The MSI MPG A1000G boasts an impressive 80 PLUS Gold certification, indicating that it achieves up to 90% efficiency under optimal conditions. This efficiency not only reduces electricity consumption but also minimises thermal loading, which is crucial for high-performance systems. On the other hand, the JUSTOP Black is rated at 70% efficiency, which is adequate for everyday use but does not provide the same level of energy savings or cooling benefits as the MSI model. For users concerned about long-term energy costs, the MSI unit is a better investment.

Modular Design

The MSI MPG A1000G features a fully modular design, allowing users to connect only the cables they need, thereby reducing clutter and improving airflow inside the case. This design is particularly advantageous for custom builds where cable management is essential. In contrast, the JUSTOP Black lacks this modularity, which may lead to a messier setup and potentially impede airflow. For enthusiasts who prioritise aesthetics and airflow, the modularity of the MSI power supply is a significant advantage.

Cooling System

The MSI MPG A1000G includes a 135mm fluid dynamic bearing fan that operates in a 0% RPM mode, automatically shutting off when the load is below 40%. This feature enhances energy efficiency and reduces noise during light usage. The JUSTOP Black, while equipped with a 120mm quiet fan, does not offer the same advanced cooling features. Users of the MSI unit can enjoy quieter operation and improved performance, especially during demanding tasks, while the JUSTOP may produce more noise under load.

Compatibility and Connectivity

The MSI MPG A1000G supports PCIe 5.0 with a native 16-pin (12VHPWR) connector, allowing it to deliver up to 600W to the latest graphics cards from NVIDIA and AMD. This future-proofing makes it an excellent choice for gamers who want to invest in cutting-edge technology. The JUSTOP Black, while compatible with Intel ATX 12V v.2.3 and EPS 12V v.2.92 standards, offers a more basic connection setup that may not support the latest GPUs effectively. For users aiming for a high-end gaming rig, the MSI’s superior compatibility is a clear advantage.

Durability and Protections

Both power supplies offer various protective features, but the MSI MPG A1000G stands out with its comprehensive set of protections, including over current, over voltage, over power, over temperature, short circuit, and under voltage protections. It is built with Japanese 105°C capacitors, ensuring durability and stability over time. The JUSTOP Black also includes multiple protections, such as over voltage and thermal overload cut-off, but it may not have the same quality of components. For users prioritising longevity and reliability, the MSI power supply is the stronger option.

Which should you buy?

Choosing between the MSI MPG A1000G and the JUSTOP Black ultimately depends on your specific needs and budget. If you're a gamer or professional requiring a powerful, efficient, and modular power supply, the MSI unit at £104.99 is well worth the investment, offering advanced features and future-proofing capabilities. However, if you are building a budget-friendly system for standard use, the JUSTOP Black at £29.95 provides sufficient power and essential protections without breaking the bank. Therefore, your decision should align with the performance requirements of your build and your financial considerations.