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CORSAIR RM Series , RM650, Fully Modular Power Supply vs MSI MAG A750GLS PCIE5, Fully Modular Compact

Updated August 2026 — CORSAIR RM Series , RM650, Fully Modular Power Supply leads on noise level and compatibility.

The CORSAIR RM Series excels in silent operation and extensive connectivity, while the MSI MAG A750GLS offers a budget-friendly option with higher wattage. Choose based on your specific needs.

Why CORSAIR RM Series , RM650, Fully Modular Power Supply is better

Silent Operation

CORSAIR's zero RPM mode ensures near-silent performance.

Connectivity

CORSAIR has more connectors for high-performance builds.

Build Quality

CORSAIR uses industrial-grade capacitors for reliability.

Why MSI MAG A750GLS PCIE5, Fully Modular Compact is better

Price

MSI is significantly cheaper.

Wattage

MSI offers 750W compared to CORSAIR's 650W.

Compact Size

MSI's smaller form factor fits in more cases.

Overall score

CORSAIR RM Series , RM650, Fully Modular Power Supply
85
MSI MAG A750GLS PCIE5, Fully Modular Compact
78

Specifications

SpecCORSAIR RM Series , RM650, Fully Modular Power SupplyMSI MAG A750GLS PCIE5, Fully Modular Compact
ModularFullyFully
Fan Size140mm135mm
EPS ConnectorsTripleNative
ProtectionYesYes
Efficiency Rating80 PLUS Gold80 PLUS Gold

Dimension comparison

CORSAIR RM Series , RM650, Fully Modular Power SupplyMSI MAG A750GLS PCIE5, Fully Modular Compact

Price Comparison

The MSI MAG A750GLS PCIE5 is priced at $89.99, making it about 35% cheaper than the CORSAIR RM Series, which retails for $138.31. This significant price difference could be a deciding factor for budget-conscious buyers. While the CORSAIR offers a higher wattage and features, the MSI's competitive pricing might appeal to gamers or users looking for a reliable power supply without breaking the bank.

Wattage and Efficiency

The CORSAIR RM Series provides a robust 650W of power, while the MSI MAG A750GLS offers an even greater 750W. This extra 100W could be crucial for users with high-performance systems, such as those utilizing top-tier graphics cards. Both power supplies are 80 PLUS Gold certified, ensuring efficiency levels of up to 90%. This certification indicates that both models are designed to minimize energy waste, but the additional wattage of the MSI gives it an edge for more demanding setups.

Modular Design

Both the CORSAIR RM Series and the MSI MAG A750GLS are fully modular, allowing users to connect only the cables necessary for their systems. This design helps reduce clutter and improve airflow within the PC case. However, the CORSAIR specifically mentions its triple EPS12V connectors, ensuring compatibility with modern graphics cards and motherboards, which may further streamline the installation process. While both designs focus on ease of use, the CORSAIR’s emphasis on compatibility could be a deciding factor for those using cutting-edge technology.

Cooling and Noise Levels

The CORSAIR RM Series features a 140mm rifle bearing fan that operates in a zero RPM mode at low to medium loads for near-silent operation. In contrast, the MSI MAG A750GLS is equipped with a 135mm fluid-dynamic bearing fan designed for low noise, maintaining an average sound level akin to a peaceful night. While both power supplies prioritize quiet performance, the CORSAIR's zero RPM mode offers an added advantage for users who desire absolute silence during less demanding tasks.

Build Quality and Reliability

When it comes to build quality, both brands emphasize the use of high-grade components. The CORSAIR RM Series is built with industrial-grade, 105°C-rated capacitors, providing solid electrical performance and reliability. On the other hand, the MSI MAG A750GLS employs an LLC half-bridge with a DC-to-DC converter and active PFC design, ensuring reliable output and multiple protection features. Both power supplies come with a ten-year warranty, reflecting confidence in their durability. However, the specifics of the components used in the CORSAIR may appeal to users focused on long-term reliability.

Connectivity Options

Connectivity is a crucial aspect of power supplies, and both the CORSAIR RM Series and the MSI MAG A750GLS offer a variety of options. The CORSAIR comes with triple/dual EPS12V cables and four PCIe 8-pin power connectors, making it well-equipped for demanding builds. In contrast, the MSI features native 12V-2x6 PCIe connectors, allowing it to deliver up to 600W to support PCIe 5.1 GPUs. While both power supplies provide essential connections, the CORSAIR's versatility and additional connectors might be more appealing for users with multiple high-performance components.

Target Audience

The CORSAIR RM Series is ideal for users who prioritize silent operation, extensive connectivity, and long-lasting components. Its features cater to high-end builds that demand reliability under heavy loads. Conversely, the MSI MAG A750GLS is tailored for gamers and casual users looking for a compact, efficient power supply that meets the demands of modern gaming hardware. Its competitive pricing makes it accessible for those who may not need the extra capacity offered by the CORSAIR.

Which should you buy?

Choosing between the CORSAIR RM Series and the MSI MAG A750GLS ultimately depends on your specific needs. If you require higher wattage and are looking for a budget-friendly option, the MSI's compact design and lower price could be more appealing. However, if you value silent operation, extensive connectivity, and long-term reliability, the CORSAIR RM Series may be worth the investment. Each power supply has its unique strengths, making either a solid choice depending on your requirements.