CORSAIR CX650 80 PLUS Bronze Non Modular Low-Noise ATX 650 Watt Power Supply - U vs Corsair HX1000i Fully Modular Ultra-Low Noise ATX Power Supply - ATX 3.1 & PCIe

Pricing Comparison

The CORSAIR CX650 is priced at £44.99, while the CORSAIR HX1000i is significantly more expensive at £169.99. This stark difference of £125 indicates that the HX1000i is positioned as a premium offering, aimed at users who may require higher performance and additional features. The CX650, on the other hand, provides a more budget-friendly option for users who need reliable power without breaking the bank.

Power Efficiency

The CORSAIR CX650 boasts an 80 PLUS Bronze certification, which assures users of up to 88% operational efficiency. This efficiency is crucial for generating less heat and reducing energy costs, making it an economical choice for standard builds. Conversely, the HX1000i adheres to the Intel ATX 3.1 standard, designed to support the latest PCIe Gen 5.1 platforms. While specific efficiency ratings are not provided for the HX1000i, its advanced certification suggests that it can handle transient power spikes effectively, making it suitable for high-performance systems.

Cooling Performance

When it comes to cooling, the CORSAIR CX650 features a 120mm thermally controlled low-noise fan, which operates quietly under light loads. This design allows for a more peaceful computing experience. In comparison, the HX1000i is equipped with a larger 140mm Fluid Dynamic Bearing fan that not only promises a longer lifespan but also operates extremely quietly. Moreover, the HX1000i includes a Zero RPM Fan Mode, ensuring that the fan remains off during low to medium loads, resulting in near-silent operation.

Modularity

The modularity of a power supply can greatly affect the ease of assembly and cable management. The CX650 is a non-modular unit, meaning that all cables are permanently attached, which may lead to a more cluttered build if not managed carefully. In contrast, the HX1000i is fully modular, allowing users to connect only the cables they need for their specific system. This feature simplifies cable management and enhances airflow within the case, making it an ideal choice for enthusiasts focused on aesthetics and organisation.

Software Features

The HX1000i stands out with its powerful CORSAIR iCUE software integration. This software allows users to create custom fan curves, monitor power settings, and easily switch between single to multi-rail overcurrent protection on-the-fly. Such features offer advanced control for users who want to optimise their system's performance. The CX650 lacks any software features, making it a more straightforward option for users who do not require such levels of customisation.

Build Quality and Design

Both power supplies exhibit a commitment to quality typical of the Corsair brand. The CX650 features a compact casing of 125mm in length, ensuring compatibility with a wide range of PC cases. Its black sleeving and powder-coated casing provide a sleek appearance. In contrast, the HX1000i, being a premium option, offers a more sophisticated design and build quality, with an emphasis on modularity and performance. The high-end components used in the HX1000i are indicative of its higher price point.

Target Audience

The CX650 is designed for mainstream users and budget-conscious gamers who need reliable power for standard setups without elaborate requirements. It provides sufficient power and efficiency for typical gaming and productivity tasks. On the other hand, the HX1000i targets enthusiasts and professionals who demand high performance, modularity, and advanced features from their power supply. It is ideal for high-end gaming rigs or workstations that require stable power delivery and customisation.

Which should you buy?

Choosing between the CORSAIR CX650 and the CORSAIR HX1000i ultimately depends on your specific needs and budget. If you are looking for an affordable, efficient power supply for a standard build, the CX650 at £44.99 is a great choice. However, if you require advanced features, higher efficiency, and modular cabling for a high-performance system, the HX1000i at £169.99 is worth the investment. Assess your requirements carefully to determine which power supply best suits your setup.