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CORSAIR RM750x Shift Fully Modular ATX Power vs POINWER H240AS-01 H240AS-00 L240AS-00 2TXYM 3WN11

Updated August 2026 — CORSAIR RM750x Shift Fully Modular ATX Power leads on price and efficiency.

The CORSAIR RM750x Shift is a superior choice for high-performance builds, while the POINWER H240AS-01 is a budget-friendly option for specific Dell systems.

Why CORSAIR RM750x Shift Fully Modular ATX Power is better

Performance

Higher efficiency rating (80 PLUS Gold)

Design

Innovative side cable interface for better management

Warranty

Ten-year warranty for reliability

Why POINWER H240AS-01 H240AS-00 L240AS-00 2TXYM 3WN11 is better

Price

Significantly lower cost

Simplicity

Easy installation for specific systems

Compatibility

Designed specifically for Dell OptiPlex models

Overall score

CORSAIR RM750x Shift Fully Modular ATX Power
85
POINWER H240AS-01 H240AS-00 L240AS-00 2TXYM 3WN11
30

Specifications

SpecCORSAIR RM750x Shift Fully Modular ATX PowerPOINWER H240AS-01 H240AS-00 L240AS-00 2TXYM 3WN11
Power Rating750W240W
Form FactorATXSFF
Efficiency Rating80 PLUS GoldN/A
Cooling TypeFluid DynamicN/A
ModularFully ModularNon-Modular

Dimension comparison

CORSAIR RM750x Shift Fully Modular ATX PowerPOINWER H240AS-01 H240AS-00 L240AS-00 2TXYM 3WN11

Overview of the Power Supplies

When comparing the CORSAIR RM750x Shift and the POINWER H240AS-01, the most significant difference lies in their intended use and specifications. The CORSAIR RM750x Shift is a high-performance, fully modular ATX power supply designed for advanced gaming and computing setups, while the POINWER H240AS-01 is a more basic, compact power supply suitable for Dell OptiPlex small form factor systems. The CORSAIR power supply costs $79.99, whereas the POINWER option is priced at $30.36, making it about 62% cheaper.

Design and Build Quality

The CORSAIR RM750x Shift features an innovative side cable interface that enhances cable management and accessibility. This design allows for a cleaner look in builds, making it particularly appealing for users who prioritize aesthetics and organization. In contrast, the POINWER H240AS-01 is designed for specific Dell OptiPlex models and focuses more on functionality than design. It may not offer the same level of visual appeal or flexibility in installations as the CORSAIR unit, which could be a determining factor for users interested in custom PC builds.

Performance and Efficiency

The CORSAIR RM750x Shift is rated 80 PLUS Gold, signifying high energy efficiency with up to 90% efficiency at typical loads. This performance is bolstered by its use of 100% 105°C-rated Japanese electrolytic capacitors, ensuring reliable power delivery. On the other hand, while the POINWER H240AS-01 is designed for stability and safety, it does not provide specific efficiency ratings like the CORSAIR unit. The clear advantage in terms of performance and efficiency goes to the CORSAIR RM750x Shift, which is designed for more demanding applications.

Compatibility

Compatibility is another key difference between these two power supplies. The CORSAIR RM750x Shift is a fully modular ATX power supply suitable for a wide range of builds and configurations, supporting the latest PCIe Gen 5.1 platform. This versatility makes it ideal for gamers and professionals looking to create high-performance systems. Conversely, the POINWER H240AS-01 is specifically tailored for certain Dell OptiPlex models such as the 390, 790, and 990. Its limited compatibility may restrict its usability for users with other systems, which is a significant consideration for potential buyers looking for broader applications.

Installation Process

Installing the CORSAIR RM750x Shift is streamlined thanks to its fully modular design, which allows users to connect only the cables required for their specific setup. This feature not only simplifies the installation process but also helps maintain a neat and organized build. The POINWER H240AS-01, designed for easy installation in Dell OptiPlex systems, claims to require just three simple steps for setup. While both power supplies are user-friendly, the CORSAIR model offers a more flexible and sophisticated installation experience that can cater to custom builds.

Cooling Solutions

The cooling solution of the CORSAIR RM750x Shift includes a 140mm fluid dynamic bearing fan, which is designed to operate quietly and efficiently. The fan utilizes a specially calculated curve for high performance and low noise, and it supports a Zero RPM mode for silent operation at lower loads. In contrast, the POINWER H240AS-01 does not detail its cooling features, suggesting that it may not be as advanced as the CORSAIR unit. Users concerned about noise levels and thermal management will likely favor the CORSAIR RM750x Shift for its superior cooling capabilities.

Warranty and Reliability

The CORSAIR RM750x Shift comes with a ten-year warranty, reflecting the manufacturer's confidence in its longevity and reliability. This extensive warranty period indicates that users can expect a durable product. Meanwhile, the POINWER H240AS-01 emphasizes stringent testing and quality assurance, but it does not specify a warranty duration. For users prioritizing long-term reliability and manufacturer support, the CORSAIR unit stands out significantly.

Which should you buy?

Ultimately, the choice between the CORSAIR RM750x Shift and the POINWER H240AS-01 depends on your specific needs and budget. If you're looking for a high-performance, energy-efficient power supply with versatility and long-term reliability, the CORSAIR RM750x Shift is the clear winner, priced at $79.99. However, if you need an economical option for a compatible Dell OptiPlex system and are less concerned about advanced features, the POINWER H240AS-01 at $30.36 is an attractive choice. Consider your system requirements and budget when making your decision.