CORSAIR RM850e Fully Modular Low-Noise ATX Power vs MSI MAG A750GLS PCIE5, Fully Modular Compact
Updated July 2026 — CORSAIR RM850e Fully Modular Low-Noise ATX Power wins on weight, MSI MAG A750GLS PCIE5, Fully Modular Compact wins on fan size and size.
Both power supplies offer excellent features, but the MSI MAG A750GLS edges out with a lower price and longer warranty.
Why CORSAIR RM850e Fully Modular Low-Noise ATX Power is better
Noise Control
CORSAIR RM850e has a quieter fan design.
Capacitor Quality
Uses industrial-grade, 105°C-rated capacitors.
Brand Reputation
Corsair is known for high-quality power supplies.
Why MSI MAG A750GLS PCIE5, Fully Modular Compact is better
Price
MSI MAG A750GLS is $5 cheaper.
Warranty
Offers a 10-year warranty compared to 7 years.
Compact Size
MSI's smaller footprint aids in cable management.
Overall score
Specifications
| Spec | CORSAIR RM850e Fully Modular Low-Noise ATX Power | MSI MAG A750GLS PCIE5, Fully Modular Compact |
|---|---|---|
| Efficiency | 80 PLUS Gold | 80 PLUS Gold |
| Modularity | Fully Modular | Fully Modular |
| Warranty | 7 Years | 10 Years |
| Noise Level | Low | Low |
| Connector Type | 12V-2x6 | 12V-2x6 |
Dimension comparison
Price Comparison
When it comes to price, the MSI MAG A750GLS is about 5% cheaper than the CORSAIR RM850e, retailing at $89.99 compared to the latter's $94.99. This slight difference may influence budget-conscious consumers, especially those building a gaming rig or a high-performance workstation. However, considering the price averages over 90 days, the CORSAIR unit averages $119.94, suggesting it may have fluctuated in availability or demand, indicating its popularity in the market. The MSI MAG A750GLS, on the other hand, maintains a stable average of $90.03, highlighting its consistent value.
Efficiency Ratings
Both power supplies boast impressive efficiency ratings, with both being 80 PLUS Gold certified. This means they can achieve up to 90% efficiency under load, ensuring minimal energy wastage. This high efficiency is particularly beneficial for users with energy-intensive components such as high-end GPUs or CPUs. The CORSAIR RM850e is noted for its Cybenetics Gold efficiency, while the MSI MAG A750GLS emphasizes its suitability for high-demand hardware. This similarity indicates that either choice would effectively support energy-efficient builds, although the CORSAIR may appeal slightly more to those prioritizing quiet operation.
Modular Design
The CORSAIR RM850e features a fully modular design, allowing users to connect only the cables necessary for their build. This ensures a cleaner look and better airflow within the case. The MSI MAG A750GLS also offers a fully modular setup, which is crucial for gamers and PC builders who want to optimize cable management. Both designs enhance the overall aesthetics and functionality of a build, but the CORSAIR’s design is complemented by its low-noise operation, thanks to its 120mm fan. The MSI's compact size also aids in better cable management and airflow, but its slightly larger power supply footprint may affect case compatibility in tighter spaces.
Noise Levels
The noise output of both power supplies is designed to be minimal, making them suitable for quiet builds. The CORSAIR RM850e features a 120mm rifle bearing fan that maintains low noise levels even under full load, making it a great option for users who prioritize a silent operation. Meanwhile, the MSI MAG A750GLS incorporates a 135mm Fluid-dynamic bearing fan, which is also engineered for low-noise performance. While both units are designed to operate quietly, the CORSAIR may edge out slightly in terms of noise control due to its specific fan design, which is tailored for low-noise operation.
Build Quality and Durability
Durability is a strong suit for both power supplies. The CORSAIR RM850e utilizes industrial-grade, 105°C-rated capacitors, which provide reliable power delivery and longevity. It comes with a seven-year warranty, suggesting confidence in its build quality. The MSI MAG A750GLS, on the other hand, features an LLC half-bridge with a DC-to-DC converter and an active PFC design, ensuring a stable output and multiple protection features. This power supply also offers a 10-year warranty, indicating a longer commitment to durability. While both are well-built, the MSI's extended warranty could be a deciding factor for those seeking long-term reliability.
Compatibility and Connectivity
Both power supplies are fully compliant with the ATX 3.1 and PCIe 5.1 standards, making them suitable for the latest hardware requirements. The CORSAIR RM850e includes a native 12V-2x6 connector, which is essential for powering modern GPUs effectively. Meanwhile, the MSI MAG A750GLS also comes equipped with native 12V-2x6 PCIe connectors and can deliver up to 600W of power to support high-performance graphics cards. This compatibility allows both units to cater to demanding PC builds, making either a fitting choice for gamers and professionals alike.
User Experience and Warranty
User experience is enhanced by the modular designs and low-noise operations of both power supplies, making installation and use straightforward. The CORSAIR RM850e's seven-year warranty provides peace of mind, while the MSI MAG A750GLS offers a competitive 10-year warranty, reflecting its focus on long-term user satisfaction. This extended warranty may appeal to users looking for a long-term investment in their power supply, while the solid reputation of both brands assures users of reliable performance.
Which should you buy?
Choosing between the CORSAIR RM850e and the MSI MAG A750GLS ultimately comes down to specific user needs and preferences. If you're looking for a power supply with a slightly better noise profile, robust capacitor quality, and a reputation for reliability, the CORSAIR RM850e is a strong contender. However, if you prefer a more compact design with an extended warranty and slightly lower price, the MSI MAG A750GLS might be the better option. Both power supplies offer excellent efficiency, modularity, and compatibility, making them suitable for modern builds.

