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FSP Mega GM 1200W PSU Review

The Mega GM 1200W ships in a nicely designed box, with key specifications (PCIe 5.1/ATX 3.1) and certifications on the front, alongside a high-resolution image of the unit in the middle. Always good to see Cybenetics awards getting featured as they mean more in 2026 than 80 Plus.

The rear of the box has multiple language key points listed across the top half, with some spec tables and award logos along the bottom.

The PSU is very well protected inside a cardboard housing. The accessories are in a separate box on the right.

The accessories box contains literature on the power supply, alongside cable combs, a tester, ties, and mounting screws.

The cables are shipped wrapped into two bundles, with a power cable alongside. They also supply a storage pouch for the cables you don't need.

The cables are all individually sleeved, high quality and there are plenty to cover all the bases you would expect with a 1200W unit. SATA cables are 18 AWG gauge, and the 4+4 Pin and 6+2 PIN PCIe cables are 16 AWG gauge. The 12+4 Pin PCIe 600 watt cable is 16-24 AWG.

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