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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 Embossed Jacket Cables, Low-Noise, 10 Year Warranty

MSI MAG A850GLS PCIE5

Bottom line: The MSI MAG A850GLS PCIE5: ATX 3.1 and PCIe 5.1 ready, native 12V-2x6 cable for NVIDIA RTX 50 series GPUs; main trade-off: gold tops out near 90% efficiency; Platinum units waste less power at load.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

Pros & Cons

Pros

  • ✓ ATX 3.1 and PCIe 5.1 ready, native 12V-2x6 cable for NVIDIA RTX 50 series GPUs
  • ✓ 80 Plus Gold certified, up to 90% efficiency for power-hungry GPUs and CPUs
  • ✓ Compact 150 x 150 mm ATX body frees space for cable routing and airflow
  • ✓ 135 mm fluid-dynamic bearing fan, built for low noise and long service life
  • ✓ Fully modular, 10-year warranty, 8 protections incl. OCP, OVP, OTP, SCP

Cons

  • ✗ Gold tops out near 90% efficiency; Platinum units waste less power at load
  • ✗ 850W leaves limited headroom for flagship GPU plus high-end CPU builds
  • ✗ Standard ATX unit, not SFX, so it won't fit small-form-factor cases
  • ✗ Low-noise claim is unquantified; the listing gives no dBA figure

Manufacturer description

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.

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SpecPicks Verdict

SpecPicks scored MSI MAG A850GLS PCIE5 using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. Compare with similarly-priced alternatives in the power supplies category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for power supplies of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • 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.
  • 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.

Full Specifications

Brandmsi
Wattage850 watts
Model NameMAG A850GLS PCIE5
Form Factorbox
Model NumberMAG A850GLS PCIE5
CompatibilityPC
Connector TypeATX
Cooling MethodAir
Number of Fans1
Output Wattage850 Watts
Item Dimensions11.54 x 9.25 x 5.08 inches
Mfr Part NumberMAG A850GLS PCIE5
Compatible DevicesComputer
Warranty Description10 Year Manufacturer
Maximum Input Voltage132 Volts (AC)
Minimum Input Voltage100 Volts (AC)
Item dimensions L x W x H11.54 x 9.25 x 5.08 inches
System Bus Connector TypeATX
Connector Type Used on CableATX
EU Spare Part Availability Duration10 Years
Full listing titleMSI MAG A850GLS PCIE5, Fully Modular Compact Gaming 850W Power Supply, 80+ Gold, ATX 3.1 & PCIe 5.1 Ready, Native Dual-Color 12V-2x6 Embossed Jacket Cables, Low-Noise, 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 Embossed Jacket Cables, Low-Noise, 10 Year Warranty is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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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 Embossed Jacket Cables, Low-Noise, 10 Year Warranty
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