Corsair HX1000i Fully Modular Ultra-Low Noise ATX Power Supply - ATX 3.1 & PCIe vs CORSAIR RM750e

Price Comparison

When considering price, the CORSAIR RM750e is significantly more affordable than the Corsair HX1000i. The RM750e is priced at £81.99, while the HX1000i comes in at £169.99. This represents a difference of £88, which is substantial for budget-conscious consumers. The lower price of the RM750e makes it an attractive option for those who need a reliable power supply without breaking the bank. However, the higher price of the HX1000i may be justified for users seeking advanced features and performance.

Power and Performance

In terms of power capabilities, the Corsair HX1000i offers a higher output than the RM750e. The HX1000i is designed to deliver more wattage, making it suitable for high-performance systems that may require additional power for components such as powerful GPUs or multiple drives. The RM750e, while still compliant with Intel's ATX 3.1 standard and capable of handling PCIe 5.1, offers fewer total watts, making it ideal for mid-range builds. Users need to consider their system's power requirements when choosing between these two power supplies.

Cooling Solutions

Cooling performance is a critical aspect of any power supply, and both units offer effective solutions. The Corsair HX1000i features a 140mm Fluid Dynamic Bearing (FDB) fan that is designed for extremely quiet operation and longevity, which is particularly beneficial for users aiming for a silent PC build. In contrast, the RM750e comes with a 120mm rifle bearing fan that also prioritises quiet performance but may not be as efficient at managing heat under heavy loads. For users seeking the ultimate in cooling performance, the HX1000i may be the superior choice.

Modular Cabling

Both the Corsair HX1000i and RM750e feature fully modular cabling, allowing users to connect only the cables necessary for their specific build. This modular design not only simplifies the installation process but also promotes better airflow within the case, reducing clutter. The HX1000i’s advanced features, such as custom fan curves and multi-rail overcurrent protection, provide additional flexibility for advanced users. While the RM750e offers similar modular benefits, it lacks some of the enhanced control features found in the HX1000i, making the latter more appealing for enthusiasts.

Efficiency Ratings

Efficiency is a crucial factor when selecting a power supply, and both models meet the expectations set by modern standards. The Corsair HX1000i is built to comply with the ATX 3.1 power standard, supporting transient power spikes, which can happen during high-demand scenarios. The RM750e is also ATX 3.1 certified and is capable of withstanding 2x transient power excursions from the GPU, ensuring reliability during peak loads. This makes both units suitable for users concerned about efficiency and reliability, although the HX1000i’s higher wattage may offer better performance in demanding situations.

Noise Levels

When it comes to noise levels, both power supplies are designed with quiet operation in mind, but they utilise different fan technologies. The HX1000i’s 140mm FDB fan boasts an ultra-low noise design, which completely shuts off at lower loads, ensuring a near-silent experience. The RM750e employs a 120mm rifle bearing fan that is also engineered to minimise noise but may not achieve the same level of silence under varying loads. Users who prioritise a quiet computing environment may find the HX1000i to be the superior option in this regard.

Software Features

The Corsair HX1000i comes equipped with powerful CORSAIR iCUE software, which allows users to create custom fan curves and monitor various power settings. This software capability provides a level of control that can be particularly useful for advanced users who want to fine-tune their system’s performance. On the other hand, the RM750e does not offer the same software integration, which may limit its appeal for those who enjoy customising their PC experience. For users who value software-enhanced monitoring and control, the HX1000i clearly stands out.

Which should you buy?

Choosing between the Corsair HX1000i and the RM750e ultimately depends on your specific needs and budget. If you require a high-wattage power supply with advanced cooling, modularity, and software features, the Corsair HX1000i at £169.99 is a worthy investment. However, if you're looking for a reliable, efficient power supply at a more affordable price of £81.99, the RM750e is an excellent choice for mid-range builds. Consider your system's requirements and your budget to make the best decision for your setup.