Corsair HX1000i Fully Modular Ultra-Low Noise ATX vs CORSAIR RM750e ATX 3.1 PCIe 5.1 Ready Fully

Overview

In the world of power supplies, the Corsair HX1000i and the Corsair RM750e stand out for their modular designs and compliance with modern standards. The HX1000i is priced at $234.99, while the RM750e is significantly more affordable at $89.99, making it about 62% cheaper. Both units are fully modular, allowing users to connect only the cables they need, but they cater to different power requirements and preferences.

Power Output and Efficiency

The Corsair HX1000i boasts an impressive 1000 watts of power output, making it ideal for high-performance systems that may include multiple GPUs or demanding components. It features an 80 Plus Platinum rating, ensuring maximum energy efficiency. In contrast, the RM750e offers a solid 750 watts of power and is rated at Cybenetics Gold efficiency. While the RM750e may suffice for mid-range builds or more energy-efficient systems, users seeking extreme performance will likely prefer the additional power from the HX1000i.

Cooling Technology

Cooling is a critical aspect of power supply performance. The HX1000i features a 140mm Fluid Dynamic Bearing fan designed for ultra-low noise operation, with a Zero RPM fan mode that stops the fan entirely at low and medium loads. This ensures near-silent operation, which is especially beneficial for quiet builds. On the other hand, the RM750e uses a 120mm rifle bearing fan that also aims to minimize noise but may not be as effective at silent operation under varying loads. Users focused on noise levels may lean towards the HX1000i for its advanced cooling technology.

Compatibility and Connectivity

Both power supplies are compliant with the Intel ATX 3.1 standard and support the PCIe 5.1 platform, making them suitable for the latest hardware. The HX1000i offers a more robust array of connections, suitable for high-demand setups. In contrast, the RM750e includes essential cables like a 12V-2x6 cable and a variety of PCIe 8-pin connectors, making it versatile for most gaming and productivity systems. For users planning to build a system with cutting-edge components, the HX1000i's additional power and connectivity options may be more appealing.

Build Quality and Longevity

When it comes to build quality, the HX1000i uses Japanese 105°C-rated electrolytic capacitors that deliver long-lasting performance and reliability, backed by a ten-year warranty. The RM750e also features 105°C-rated capacitors but comes with a slightly shorter seven-year warranty. This difference in warranty length may indicate a greater confidence in the longevity and reliability of the HX1000i, making it a more suitable option for high-end builds that require dependable performance over time.

Software and Customization

One of the standout features of the HX1000i is its compatibility with CORSAIR iCUE software, allowing users to monitor power settings, create custom fan curves, and adjust the overcurrent protection settings in real-time. This level of control can be crucial for enthusiasts looking to optimize their system's performance. The RM750e lacks such software integration, which may limit its appeal to users who want to have detailed control over their power supply's performance and efficiency.

Pricing and Value Proposition

With the HX1000i priced at $234.99 and the RM750e at just $89.99, there's a significant price difference of about $145. The RM750e offers a compelling value for budget-conscious buyers or those with less demanding power requirements. However, for users who require the additional power, efficiency, and features of the HX1000i, the investment may be justified. Ultimately, the choice between the two will depend on individual needs and budget constraints.

Which should you buy?

Choosing between the Corsair HX1000i and the RM750e ultimately depends on your specific requirements. If you are building a high-performance system that demands maximum power and efficiency, the HX1000i is the superior choice, despite its higher price. Its advanced cooling technology, robust build quality, and software integration make it an excellent investment for serious gamers or professionals. Conversely, if you are looking for a reliable, cost-effective power supply for a mid-range build, the RM750e offers great value without compromising on essential features.