CORSAIR RM750e vs JUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan

Price Comparison

When it comes to pricing, there is a significant difference between the CORSAIR RM750e and the JUSTOP Black 700W Power Supply Unit. The RM750e is priced at £81.99, while the JUSTOP unit is considerably more affordable at £29.95. This price gap of £52.04 reflects the differences in features and certifications that each power supply offers. The lower price of the JUSTOP model may appeal to budget-conscious consumers or those building entry-level systems, while the RM750e’s higher price point may be justified by its advanced capabilities and reliability.

Build Quality

The CORSAIR RM750e boasts a fully modular design, which not only enhances cable management but also contributes to a cleaner build and improved airflow within the case. This feature is particularly beneficial for users who prioritise aesthetics and functionality in their setups. In contrast, the JUSTOP Black 700W, while providing adequate performance for standard applications, does not offer the same level of modularity. Its build quality is adequate for basic usage but lacks the sophistication and efficiency of the RM750e, which is designed to cater to more demanding users.

Performance

In terms of performance, the CORSAIR RM750e is certified with Intel ATX 3.1 standards, providing robust support for modern components, including the latest GPUs with PCIe 5.1 compatibility. This ensures that it can handle transient power excursions effectively, making it a reliable choice for high-performance systems. Conversely, the JUSTOP unit, while capable of delivering a stable output of 700W, adheres to the older ATX 12V v.2.3 and EPS 12V v.2.92 standards. This means that it may not offer the same level of future-proofing and efficiency under heavy loads, which can be a crucial factor for gamers and professionals.

Cooling Efficiency

Cooling is essential for maintaining optimal performance in power supplies, and both units feature a fan to manage temperatures. The CORSAIR RM750e utilises a 120mm rifle bearing fan designed to minimise noise while effectively cooling the unit, even under full load. This is particularly beneficial for users who have noise sensitivity or prefer a quieter computing environment. On the other hand, the JUSTOP Black 700W uses a 12CM cooling fan, which provides decent airflow but may not operate as quietly as the RM750e under heavy usage. The difference in fan technology can impact long-term performance and user experience.

Safety Features

Safety is paramount when selecting a power supply, and both models come equipped with essential protection features. The CORSAIR RM750e includes 105°C-rated capacitors, ensuring high reliability and performance over time. Additionally, it has modern standby compatibility, which enhances its efficiency at low loads. The JUSTOP Black 700W also incorporates several protective features, such as over voltage protection, over power protection, short circuit protection, and thermal overload cut-off protection. While both units prioritise safety, the RM750e’s higher-quality components and additional certifications may provide an edge in reliability.

Compatibility

Compatibility is a crucial aspect for consumers building or upgrading their systems. The CORSAIR RM750e is not only ATX 3.1 certified but also supports the latest PCIe 5.1 components, making it an excellent choice for cutting-edge builds. Its fully modular cabling allows users to connect only the necessary cables, reducing clutter. In contrast, while the JUSTOP Black 700W is compatible with most CPUs and motherboards due to its adherence to established standards, it may not offer the same level of flexibility or performance for high-end components. Users with future upgrade plans may find the RM750e to be a more suitable investment.

User Experience

User experience often hinges on the installation process and the overall usability of the product. The CORSAIR RM750e’s fully modular design simplifies installation, allowing users to connect only the cables they need for their specific setup. This not only makes for a cleaner build but also aids in airflow and cooling. In comparison, the JUSTOP Black 700W, while functional, may fall short in terms of ease of use due to its non-modular nature. Users may find themselves dealing with excess cables that can complicate cable management, potentially leading to a less satisfying installation experience.

Which should you buy?

The choice between the CORSAIR RM750e and the JUSTOP Black 700W ultimately depends on your specific needs and budget. If you are seeking a high-performance, reliable power supply equipped with modern features and superior build quality, the RM750e at £81.99 is undoubtedly the better option. However, for those on a tighter budget or building basic systems, the JUSTOP Black 700W at £29.95 offers decent performance without breaking the bank. While the CORSAIR unit shines in terms of performance, safety, and user experience, the JUSTOP model provides an economical solution for less demanding applications.