MSI MAG A750GLS PCIE5 PSU Review

MSI has expanded its MAG lineup with the new GLS Series power supplies, designed to fit seamlessly into their ever-growing ecosystem. As mentioned in our previous MSI RTX 5060 Ti Gaming Trio OC review, MSI is creating a cohesive environment for users to match their graphics cards with compatible and reliable power solutions. This strategy reduces guesswork, improves compatibility, and ensures better overall system efficiency.

What sets the GLS series apart is its PCIe 5.1 readiness, a future-proofing element that aligns with the latest power delivery standards. For this series, MSI offers four different wattage variants: 1000W, 850W, 750W, and 650W. In this review, we’ll be diving into the MAG A750GLS, a 750W variant that aims to strike the right balance between power, efficiency, and affordability.

Specifications & Key Features

The MSI MAG A750GLS PCIE5 is a fully modular power supply that’s ATX 3.1 ready, supporting up to 220% total power excursion and 3x GPU power excursion, meeting the demanding needs of modern and next-gen hardware. It features a native 12V-2x6 PCIe 5.1 connector, which is more robust and secure than previous-gen power standards.

Here’s a breakdown of the technical features:

• ATX 3.1 & PCIe 5.1 Ready

• 12V-2x6 Native Connector (supports up to 450W on a single cable)

• 4 x PCIe 8-pin Connectors

• Triple Gold Certification (80 PLUS Gold, CYBENETICS Gold, PPLP Gold)

• Semi-Digital PFC and LLC Resonant Converter

• 105°C Japanese Main Capacitor

• 135mm Fluid Dynamic Bearing Fan (FDB) for quieter operation

• Anti-Surge, Over Voltage, Short Circuit, and other protections

• Dual-color 12V-2x6 connector for safe & secure installation

• Flexible embossed-jacket modular cables for easier routing

• Nickel-plated Copper Alloy Terminals

• UL-certified cables

  
  

The semi-digital design offers more precise power regulation and monitoring compared to traditional analog systems, contributing to both stability and efficiency.

What’s in the Box?

Inside the box, you’ll find:

• 1 x A750GLS PCIE5 PSU Unit (rugged industrial design with subtle branding)

• 1 x ATX (20+4 PIN)

• 1 x EPS (4+4 PIN) (pigtail type, 1-to-2)

• 1 x PCIe 5.1 (12V-2x6) cable

• 2 x PCIe (6+2 PIN)

• 1 x 12V-2x6 to Dual 8-PIN PCIe Adapter

• 1 x SATA / Peripheral (Molex) Cable

• 1 x SATA / Peripheral / FDD Combo Cable

  
  

The power supply itself has a solid, hefty build, exactly what you’d want from a quality PSU. Its design leans towards an industrial aesthetic, nothing flashy or RGB-heavy, just clean lines and labeling that serve a purpose.

EPS Cable Confusion: Let’s Talk About It

A particular point of interest (and confusion) during setup was the inclusion of only one EPS (4+4 pin) cable, which was pigtail-split into two connectors. When we installed this PSU on our MSI B850M Mortar WiFi motherboard, which requires two separate 4+4 connectors, we initially questioned whether one pigtail cable could handle the load.

This concern is common in enthusiast communities, where there’s a belief that a single EPS cable (even when split) may only reliably deliver up to 150W. However, we decided to test this with our high-end AMD Ryzen 9 9800X3D CPU setup to get real answers.

Power Delivery Test Results

• During heavy workloads and synthetic stress tests, our PMD (Power Monitoring Device) recorded peak power spikes up to 171W on the EPS line.

• Despite being a single pigtail cable, the MSI-supplied EPS cable consistently delivered stable power, without any voltage drops or thermal issues.

• System remained stable throughout extended workloads and gaming sessions.

  
  

This debunks the concern that a pigtail EPS cable can’t handle high power loads. MSI has clearly engineered this cable to meet the demands of modern motherboards and high-performance CPUs.

PCIe Support and Future Compatibility

The MAG A750GLS PCIE5 may appear to have limited PCIe 8-pin connectors at first glance, but it compensates with smarter cable design. MSI includes:

• 1 x 12V-2x6 to Dual 8-Pin Adapter – enabling backward compatibility with older GPUs.

• 1 x Native 12V-2x6 PCIe 5.1 Cable – offering up to 450W for next-gen GPUs.

• 2 x Standard PCIe 6+2 PIN Cables

  
  

This approach not only reduces cable clutter but ensures you’re ready for both current-gen and upcoming GPUs like the NVIDIA 50-series or AMD RX 9000-series, without the need for aftermarket adapters.

EZ-DIY Features for Builders

MSI has clearly thought of builders and DIY enthusiasts here. Notable features include:

• Dual-color 12V-2x6 connector: The yellow marking helps users instantly verify that the cable is fully seated, reducing the chance of improperly connected power cables that can lead to overheating or damage.

• Flexible embossed-jacket modular cables: These are not only sleeker and easier to manage than typical flat cables, but they also offer better bend radius for small form factor or tight ATX builds.

  
  

The thoughtful cable design makes routing cleaner, faster, and less frustrating, especially for users who value good cable management.

Efficiency, Cooling, and Noise

The triple Gold-certified efficiency (80 PLUS, CYBENETICS, and PPLP) guarantees reduced power wastage, better thermal output, and lower electricity costs in the long run. During testing, we noted:

• Power delivery remained consistent, even under max load conditions.

• The 135mm FDB fan was impressively quiet, only becoming audible under heavy GPU + CPU combined workloads.

• Idle and light load operations were nearly silent, ideal for productivity-focused or home setups where noise is a concern.

  
  

Conclusion

The MSI MAG A750GLS PCIE5 PSU stands out in a saturated market by focusing on real-world usability, future readiness (PCIe 5.1, ATX 3.1), and practical builder features. While the single EPS cable setup may raise eyebrows initially, our tests confirmed its stability and capability even with high-end components like the Ryzen 9 9800X3D.

Its triple-certified efficiency, thoughtful cable ecosystem, quiet operation, and rugged build quality make this a smart pick for gamers, content creators, and PC builders looking for a future-proof mid-range PSU.

KT Media Rating: 8/10