MSI MAGA1000GLPCIE5II 1000W power supply

What this power supply delivers

The MSI MAG A1000GL PCIE5 II is an ATX unit rated for 1000 W peak output with a continuous 600 W power rating. It targets builders who need headroom for multi-GPU configurations and high-end components. Active PFC and greater than 85% efficiency help keep running costs down. The single 120 mm fan uses blue LEDs rather than RGB lighting.

Check your build before ordering

Verify that your case can accommodate a unit measuring 11.6 in by 9.4 in by 5.2 in and that the 20-pin or 24-pin main connector reaches your motherboard. The supply provides two +12 V rails and a +3.3 V rail rated at 8 A maximum current. Input range covers 100 to 240 V at 50 or 60 Hz with 10 A draw at 115 V or 5 A at 230 V. Ensure your AC circuit can handle the rated input current.

Thermals noise and power draw

The single 120 mm fan spins to move heat through the chassis under load. Blue LED illumination is constant and not addressable. At typical loads the unit operates above 85% efficiency, rising toward 90% in the sweet spot, which limits waste heat. Peak draw can reach 1000 W for short bursts while continuous operation stays at 600 W. Fan noise scales with internal temperature and load level.