Corsair HX1000i Fully Modular Ultra-Low Noise ATX Power Supply - ATX 3.1 & PCIe vs CORSAIR RM1000e

Overview

When it comes to power supplies, the Corsair HX1000i and the Corsair RM1000e stand out as two excellent choices, but they cater to slightly different needs. Priced at £169.99, the HX1000i is a high-end option with advanced features, while the RM1000e offers a more budget-friendly price of £149.88, without compromising on quality.

Modular Design

Both the HX1000i and the RM1000e feature fully modular cabling, allowing users to connect only the cables necessary for their system build. This design not only promotes a cleaner build but also enhances airflow within the case. The HX1000i’s modular design makes it particularly appealing for users focused on aesthetics and cable management, while the RM1000e offers the same benefit at a lower price point, ensuring reliability and efficiency.

Noise Levels

Noise performance is an essential consideration for any power supply, and both models deliver excellent results. The HX1000i is equipped with a 140mm Fluid Dynamic Bearing fan, designed for ultra-low noise operation, ensuring a quiet computing experience even under load. In comparison, the RM1000e features a 120mm rifle bearing fan. While the RM1000e is also designed to keep noise down, it may not be as silent as the HX1000i, particularly under heavy usage, although it still maintains a good performance level.

Power Certification

Both power supplies boast Intel ATX 3.1 certification, ensuring they meet the latest power standards. The HX1000i supports PCIe Gen 5.1, making it a strong contender for users needing to handle transient power spikes. The RM1000e also supports PCIe 5.1 and can withstand 2x transient power excursions from the GPU. This means that while both units are capable of supporting high-performance builds, the HX1000i may have a slight edge in high-demand scenarios.

Cooling Efficiency

Cooling is crucial for power supplies, especially during intense usage. The HX1000i’s Zero RPM fan mode allows the fan to switch off entirely at low to medium loads, ensuring silent operation. This feature not only enhances the longevity of the unit but also contributes to a quieter environment. The RM1000e, while efficient with its calculated fan curve, does not have a silent mode, which may lead to slightly higher noise levels in similar conditions.

Capacitor Quality

Capacitor quality can significantly influence the reliability and performance of a power supply. The HX1000i does not specify capacitor ratings, but it's generally expected that a premium offering like this would employ high-quality components. The RM1000e, however, features 105°C-rated capacitors, which provide steady and reliable power. This specification indicates that the RM1000e is built to endure higher temperatures, ensuring dependable electrical performance.

Software Integration

The HX1000i comes with powerful CORSAIR iCUE software, allowing users to create custom fan curves, monitor power settings, and toggle between single and multi-rail overcurrent protection on-the-fly. This level of customisation is particularly beneficial for enthusiasts looking to optimise their system's performance. The RM1000e lacks such software integration, which may be a downside for users who appreciate advanced monitoring and control features.

Price Comparison

Price is often a decisive factor when choosing between products. The HX1000i is priced at £169.99, reflecting its advanced features and higher-end performance. On the other hand, the RM1000e is more accessible at £149.88, making it a compelling choice for those who want a quality power supply without stretching their budget too far. The difference of £20 may be justified for users who value the additional features of the HX1000i, but for many, the RM1000e provides sufficient performance at a lower cost.

Which should you buy?

Choosing between the Corsair HX1000i and the Corsair RM1000e ultimately depends on your specific needs and budget. If you require a power supply with advanced features such as custom software integration, silent operation through a Zero RPM fan mode, and superior cooling capabilities, the HX1000i is worth the extra investment. However, if you are looking for a reliable, efficient power supply that meets ATX 3.1 standards without the additional bells and whistles, the RM1000e offers excellent value for £149.88.