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Main image of MSI MAG A850GLS PCIE5, Fully Modular Compact Gaming 850W Power Supply, 80+ Gold, ATX 3.1 & PCIe 5.1 Ready, Native Dual-color 12V-2x6 cable, Low-Noise, Embossed Jacket Cables, 10 Year Warranty

Alt view image 2 of 5 - MSI MAG A850GLS PCIE5, Fully Modular Compact Gaming 850W Power Supply, 80+ Gold, ATX 3.1 & PCIe 5.1 Ready, Native Dual-color 12V-2x6 cable, Low-Noise, Embossed Jacket Cables, 10 Year Warranty

Alt view image 3 of 5 - MSI MAG A850GLS PCIE5, Fully Modular Compact Gaming 850W Power Supply, 80+ Gold, ATX 3.1 & PCIe 5.1 Ready, Native Dual-color 12V-2x6 cable, Low-Noise, Embossed Jacket Cables, 10 Year Warranty

Alt view image 4 of 5 - MSI MAG A850GLS PCIE5, Fully Modular Compact Gaming 850W Power Supply, 80+ Gold, ATX 3.1 & PCIe 5.1 Ready, Native Dual-color 12V-2x6 cable, Low-Noise, Embossed Jacket Cables, 10 Year Warranty

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MSI MAG A850GLS PCIE5, Fully Modular Compact Gaming 850W Power Supply, 80+ Gold, ATX 3.1 & PCIe 5.1 Ready, Native Dual-color 12V-2x6 cable, Low-Noise, Embossed Jacket Cables, 10 Year Warranty

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Type: 2026 ATX 3.1 (850W)

2026 ATX 3.1 (1000W)
2026 ATX 3.1 (650W)
2026 ATX 3.1 (750W)
2026 ATX 3.1 (850W)
ATX 3.0 (650W)
ATX 3.1 (1000W)
ATX 3.1 (1250W)
ATX 3.1 (750W)
ATX 3.1 (850W)
ATX 3.1 (850W) White
ATX 3.1 (1000W) White

80 PLUS GOLD CERTIFIED- With 80 PLUS Gold certification (up to 90% efficiency), this PSU is ideal for powering hardware with high energy demands, such as GPUs and CPUs.
NATIVE 12V-2x6 CONNECTOR- Equipped with native 12V-2x6 PCIe connectors, it can deliver up to 300W of power to support PCIe 5.1 GPUs.
DURABLE DESIGN - An LLC half-bridge with DC-to-DC converter and an active PFC design ensure a reliable output (OCP / OTP / OPP / SCP / OVP / UVP / SIP / NLO protection).
COMPACT SIZE -
A compact 150 mm-long and 150 mm-wide ATX form factor ensures a comfortable and easy fit in most PC cases. This frees up more space for cable management and airflow to the rest of the system.
LOW-NOISE OPERATION -
The average sound level is maintained as low as that of a peaceful night.
Equipped with a 135 mm Fluid-dynamic bearing (FDB) fan, designed to enhance durability.

Overview

Specs

Reviews (433)

Lasting Durability, Quietly Yours.

The MAG A850GLS PCIE5 provides 80 PLUS Gold-certified power efficiency, a native 12V-2x6 connector to support RTX 50 series graphics cards, and is ATX 3.1 ready, cooled by a 135 mm fluid dynamic bearing (FDB) fan for superior performance.

PCIe 5.1 GPU Support (Native 16-pin Connector)

Through the native 16-pin (12V-2x6) PCIe connector, the PSU can provide up to 600W of power to a PCIe 5.1 GPU, and includes yellow highlights to help identify a loose connection.

ATX 3.1 Ready

ATX 3.1 ready power supplies can handle up to 220% total power excursions and 3x GPU power excursions.

Gold Efficiency Certified

The efficiency of a power supply directly impacts system power consumption.

A Gold certification represents an exceptional standard for energy efficiency, offering up to 90% efficiency. This ensures reduced power consumption while maintaining peak performance at higher efficiency levels.

Durable and Safe Connections

The connector terminals are made of nickel-plated copper alloy, effectively preventing oxidation and maintaining conductivity and durability during high current surges.

The cables are fully UL certified, ensuring superior safety and durability.

Embossed Jacket Modular Cables

The sleek matt black embossed jacket cables not only elevates its appearance but also makes cable management significantly easier for users.

A fully modular design means that only the connectors required by the build are used. This significantly reduces cable clutter, simplifying the overall build and improving airflow.

Low Noise Operation

This power supply is designed for quiet operation, and aslo with 135 mm Fluid-Dynamic Bearing (FDB) fan offers reliable cooling performance and keep balance noise levels as low as a peaceful night.

Half-bridge LCC Topology + DC-to-DC

Robust internals support AC inputs, while delivering stable output for high performance components.

A half-bridge LLC with DC-to-DC converter includes an active PFC design.

Extensive Connectivity

A wide range of connectivity options provides extensive hardware support.

Connect and upgrade multiple hard drives, SSDs, graphics cards and other components quickly and easily.

Featuring ATX 3.1 and PCIe 5.1 support with native 12V-2x6 connectors, these PSUs are built to handle NVIDIA? s 50 series graphics cards and AI PCs with ease. Advanced thermal solutions ensure cool, stable, and efficient operation, even under heavy loads, giving you the reliability and durability you need for gaming, streaming, or AI-powered tasks.

Best Seller Ranking	#77 in Power Supplies

General
Brand	MSI
Model	MAG A850GLS PCIE5

Details
Color	Black
Type	ATX12V
Maximum Power	850 W
Fans	1 x 135 mm
PFC	Active
Energy-Efficient	80 PLUS GOLD Certified
PSU Noise Level	Cybenetics A+
Input Voltage	100 - 240 V

Additional Information
First Listed on Newegg	August 08, 2025

Warranty & Returns

Warranty, Returns, And Additional Information

Return Policies

Return for refund within: 30 days
Return for replacement within: 30 days
This item is covered by Newegg.ca's Standard Return Policy.
Read full return policy for details.

Manufacturer Contact Info

The MSI MAG A850GLS PCIE5 is an 850W, fully modular 80 PLUS Gold ATX power supply with ATX 3.1 and PCIe 5.1 support, suited to gaming PCs with demanding CPUs and GPUs.

Recommended For

PC gamers building a single-GPU system with a current-generation graphics card that uses a native 12V-2x6 connection; MSI lists RTX 50-series support and the PSU includes a native 600W-rated connector.
Builders of ATX gaming PCs who want a fully modular PSU and flexible cables for cleaner routing; Tom’s Hardware notes the cables are flexible, and the unit is 150 mm deep.
Gamers and desktop users seeking quieter operation during typical, non-maximal loads; Hardware Busters measured an A+ noise rating, while Tom’s Hardware found low fan noise across most cold-test loads.
PC builders upgrading to an ATX 3.1 power supply who want native PCIe 5.1 GPU cabling and fully modular connections, without moving to a larger-capacity unit.

Real-World Use Scenarios

Building a gaming PC with a compatible PCIe 5.1 graphics card? The native 12V-2x6 cable connects directly to the GPU, avoiding the need for a separate adapter; check the card and full system’s power requirements before choosing an 850W supply.
Replacing a PSU while keeping the same PC case? Its 150 mm length and fully modular cables can make installation and cable routing easier, particularly in a compact build.
Playing demanding games on a single-GPU desktop? In a system whose total power needs fit the PSU’s capacity, the A850GLS provides power for sustained gaming loads; independent testing reports good electrical performance and quiet operation.
Assembling a new PC and trying to keep visible wiring tidy? The fully modular design lets you connect only the cables the build needs, while the jacketed cables are intended to be easier to bend and route.
Building a gaming PC for a quieter room? The A850GLS is designed around a quieter fan profile, and independent testing describes its operation as quiet; fan noise can still vary with system load and case airflow.

Spec Summary

Attribute	Value
Best For	Desktop PC builds requiring an 850 W ATX12V power supply, including gaming systems
Power Capacity	850 W output
Electrical Specifications	80 PLUS Gold certified with active PFC and a 100–240 V AC input range
Cooling And Acoustics	Air-cooled by one 135 mm fan, with a Cybenetics A+ noise rating
Modularity And Connections	Fully modular cabling with an ATX cable and one 24-pin ATX connector
Physical Specifications	Black; 6.75 lb; 11.54 × 9.25 × 5.08 in
Model Identifiers	MSI MAG A850GLS PCIE5

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