CORSAIR HX1500i vs CORSAIR RM750e

Price Comparison

When comparing the price of the CORSAIR HX1500i and the CORSAIR RM750e, the difference is substantial. The HX1500i is priced at £229.00, while the RM750e is significantly more affordable at £81.99. This indicates a price difference of £147.01, making the RM750e a more budget-friendly option for those looking to upgrade their power supply without breaking the bank. The HX1500i's higher price can be attributed to its advanced features and higher wattage capacity, appealing to users with demanding power requirements.

Power Capacity

The CORSAIR HX1500i boasts an impressive power capacity of 1500 watts, making it suitable for high-performance systems, especially those with multiple GPUs or extensive overclocking needs. In contrast, the CORSAIR RM750e provides a solid 750 watts, which is adequate for mid-range builds and standard gaming rigs. This stark difference in capacity highlights the HX1500i's suitability for users who require a robust power supply capable of supporting the latest hardware without issues, while the RM750e serves as a reliable option for less power-intensive setups.

Modular Cabling

Both the CORSAIR HX1500i and the CORSAIR RM750e feature fully modular cabling, allowing users to connect only the cables necessary for their specific system. This design promotes a cleaner and more organised build, reducing cable clutter inside the case. However, the HX1500i's advanced features, like the ability to utilise powerful software for custom fan curves and power monitoring, may attract enthusiasts who want more control over their system's power management, elevating its modular benefits beyond just physical cabling.

Cooling Efficiency

The cooling efficiency of both power supplies is noteworthy, but they employ different fan designs. The HX1500i utilises a 140mm Fluid Dynamic Bearing (FDB) fan, which is designed to deliver extremely quiet operation and longevity. Conversely, the RM750e is equipped with a 120mm rifle bearing fan, which also prioritises low noise levels. While both fans aim to maintain a quiet computing environment, the larger fan on the HX1500i may offer improved airflow and cooling performance, especially under heavy loads, making it a better choice for high-performance systems.

Certification Standards

Both the CORSAIR HX1500i and the CORSAIR RM750e are Intel ATX 3.1 certified, ensuring they comply with the latest power standards. This certification supports the PCIe Gen 5 platform and enables both power supplies to handle transient power spikes effectively. However, the HX1500i's certification includes specific enhancements that resist more extreme transient power excursions, making it ideal for high-end configurations that demand stable and reliable power delivery during intense gaming or demanding tasks.

Noise Level

When it comes to noise levels, both power supplies excel in maintaining a quiet operation. The HX1500i features a Zero RPM Fan Mode that allows the fan to switch off entirely at low and medium loads, leading to near-silent performance. Meanwhile, the RM750e's specially calculated fan curve helps keep noise levels down, even at full load, thanks to its 120mm rifle bearing fan. For users prioritising a quiet computing experience, both models are designed to operate quietly, but the HX1500i offers an additional advantage with its complete fan shutdown feature during less intensive tasks.

Reliability and Performance

Reliability is a crucial factor in choosing a power supply, and both units are designed to deliver dependable electrical performance. The HX1500i's use of advanced components and features, such as powerful software support for monitoring and customisation, enhances its reliability for high-performance systems. The RM750e, on the other hand, includes 105°C-rated capacitors, which ensure steady power delivery and long-term durability. While both power supplies are reliable, the HX1500i may be preferable for users who push their systems to the limits, whereas the RM750e suffices for standard use cases.

Which should you buy?

Ultimately, the choice between the CORSAIR HX1500i and the CORSAIR RM750e depends on your specific needs and budget. If you require a high-capacity power supply capable of supporting demanding systems with extensive hardware, the HX1500i at £229.00 is worth the investment. However, for users with more modest requirements seeking a reliable and efficient power supply at a much lower price of £81.99, the RM750e provides excellent value without compromising on essential features.