CORSAIR HX1500i Fully Modular Ultra-Low Noise ATX vs CORSAIR RM750x Shift Fully Modular ATX Power

Price Comparison

The CORSAIR HX1500i is priced at $349.99, while the CORSAIR RM750x Shift is significantly more affordable at $79.99, making it about 77% cheaper. This major price difference reflects the distinct target markets for each power supply. The HX1500i, with its higher price, is designed for high-performance systems that demand more power, while the RM750x Shift caters to mid-range builds where efficiency and cost-effectiveness are prioritized. If budget is a primary concern, the RM750x Shift offers excellent value without compromising on essential features.

Efficiency Ratings

The CORSAIR HX1500i boasts an impressive 80 PLUS Platinum efficiency rating, signifying its ability to convert power with minimal waste. In contrast, the CORSAIR RM750x Shift holds an 80 PLUS Gold rating, which, while still excellent, is a step down in efficiency. The platinum rating of the HX1500i suggests it is better suited for high-demand environments where power consumption is critical, particularly in gaming or workstation setups. Meanwhile, the Gold-rated RM750x Shift is ideal for users who want reliable performance at a lower cost and with lower power needs.

Modular Design

Both power supplies feature a fully modular design, allowing users to connect only the cables they need, which contributes to clean and tidy builds. However, the HX1500i takes this a step further with its advanced features and additional connections. Its fully modular cabling makes it easier to manage power delivery to high-performance systems. On the other hand, the RM750x Shift includes innovative side cable connections, making it easier to access and manage cables, which is particularly beneficial for those looking to streamline their setups. This design element enhances usability and organization, especially in compact builds.

Cooling Solutions

The cooling mechanisms of both the CORSAIR HX1500i and RM750x Shift utilize a 140mm Fluid Dynamic Bearing fan, ensuring quiet operation and reliability. The HX1500i offers a Zero RPM fan mode, allowing the fan to completely switch off at low and medium loads for near-silent operation. This is an excellent feature for silent PC setups. The RM750x Shift also incorporates a Zero RPM mode, but its fan curve is specially calculated for balanced performance and noise reduction. While both units perform effectively, the HX1500i's fan mode may provide a slight edge for users prioritizing silence.

Connectivity Options

The CORSAIR HX1500i supports the latest ATX 3.1 standard and PCIe 5.1 connections, making it exceptionally well-equipped for modern and future-proof builds. Its design includes connections necessary for demanding components, ensuring compatibility with the latest technology. Conversely, the RM750x Shift also meets the ATX 3.1 standard and provides PCIe 5.1 support, but it is designed for systems that require less power. While both power supplies offer robust connectivity options, the HX1500i is tailored for users who may push their systems to the limits, making it a better choice for high-performance builds.

Software Integration

A standout feature of the CORSAIR HX1500i is its integration with CORSAIR iCUE software, which allows users to monitor power settings, create custom fan curves, and switch between single and multi-rail overcurrent protection on-the-fly. This level of control is invaluable for enthusiasts looking to optimize their systems. The RM750x Shift, while lacking direct software integration like the HX1500i, still provides a high degree of functionality due to its fully modular design and advanced components. Users who prioritize software control and customization may find the HX1500i more appealing.

Build Quality and Warranty

Both products reflect CORSAIR's commitment to quality, featuring Japanese 105°C-rated electrolytic capacitors that enhance reliability and longevity. The HX1500i comes with a ten-year warranty, reflecting its high-end positioning and reliability for demanding tasks. The RM750x Shift also boasts a ten-year warranty, which is impressive for its price point, ensuring peace of mind for users. While both units are backed by solid warranties, the HX1500i's premium components justify its higher price, making it the better option for those valuing long-term reliability.

Which should you buy?

Choosing between the CORSAIR HX1500i and the CORSAIR RM750x Shift ultimately depends on your specific needs and budget. The HX1500i is the superior choice for high-performance builds requiring maximum efficiency, advanced features, and extensive control through software. However, if you're looking for a reliable, cost-effective power supply that still offers great performance for mid-range systems, the RM750x Shift is an excellent option. Both power supplies are well-made and come with a ten-year warranty, but your choice should align with your power requirements and budget constraints.