MSI MEG Ai1300P PCIE5 1300W ATX 3.0 power supply

High-wattage ATX 3.0 power supply

The MSI MEG Ai1300P PCIE5 delivers 1300 W through a single +12 V rail and meets ATX 3.0 and PCIe 5.0 specifications. It targets builders running flagship graphics cards such as the 4080 or 4090 and workstations that demand sustained high loads. The 80 PLUS Platinum rating confirms up to 92 % efficiency at typical loads.

Full-modular installation with 150 mm depth

A full-modular cable set lets you connect only the leads you need, including eight 6+2-pin PCIe connectors, 16 SATA plugs and the 12VHPWR cable for modern GPUs. The 150 mm chassis fits most mid-tower and larger cases, but compact builds should verify clearance. Sleeved cables improve routing but add stiffness; plan bends before tightening screws.

Check GPU power needs and case length

Confirm your graphics card requires the 12VHPWR connector or multiple 6+2-pin leads before ordering. Measure the available PSU bay depth against the 150 mm unit length. Ensure the motherboard accepts a 24-pin main connector and that the 100-240 V input range matches your local mains supply.