MSI MAG A1200PLS PCIE5 1200W power supply

1200 W ATX 3.1 power supply

The MSI MAG A1200PLS PCIE5 delivers 1200 W of continuous power through a fully modular ATX 3.1 design. It targets builders who need high headroom for demanding graphics cards and multi-core processors. Platinum certification guarantees up to 92 % efficiency across typical loads. A 135 mm fluid-dynamic bearing fan handles cooling while keeping acoustic output low.

Native 12V-2x6 connector for PCIe 5.1 GPUs

A single 16-pin 12V-2x6 cable supplies up to 600 W directly to a PCIe 5.1 graphics card, removing the need for adapters. Four additional 6+2-pin PCIe connectors remain available for secondary GPUs or accessories. GPU Safeguard monitors the 12V-2x6 rail in real time and sounds a buzzer if current exceeds safe limits. The unit tolerates total power excursions of 235 % as defined by the ATX 3.1 specification.

Compact 150 mm depth fits most cases

At 150 mm long the PSU leaves clearance for cable routing and front-mounted radiators in standard ATX chassis. Fully modular embossed-jacket cables include one ATX 20+4-pin, two EPS 4+4-pin, one PCIe 5.1, three PCIe 6+2-pin, two SATA and one peripheral lead. A 105 °C main capacitor and a full suite of protections — OCP, OTP, OPP, SCP, OVP, UVP, SIP, NLO — back the ten-year manufacturer warranty.