Taiwan · U.S. · Intel · Tom's Hardware
FSP Mega GM 1200W power supply review: An in-house FSP platform that quietly overshoots its own Gold label
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FSP is not a brand that needs an introduction so much as a reminder of scale.
Key facts
- The series spans 850W, 1000W, and the 1200W flagship reviewed here, all built around the same ATX 3.1 and PCIe 5.1 brief: native 12V-2x6 delivery, support for the 200% transient power excursions
- Average efficiency settles to 91.4% at 230 VAC and 89.2% at 115 VAC, with full-load figures of 88.9% and 85.3%, respectively
- Bulk energy storage is, pleasingly, entirely Japanese: two Nippon Chemi-Con 680 µF and 330 µF capacitors, both rated to 420V and 105 °C
- At 150 x 150 x 86 mm, the Mega GM 1200W is genuinely compact for its output
Summary
Founded in Taiwan in April 1993 as a joint venture between Fortron/Source of the United States, Sparkle Power International, and Powertech Systems, the three names that give the company its initials, FSP grew into one of the largest power-supply manufacturers in the world. That distinction matters here. The series spans 850W, 1000W, and the 1200W flagship reviewed here, all built around the same ATX 3.1 and PCIe 5.1 brief: native 12V-2x6 delivery, support for the 200% transient power excursions modern GPUs demand, and FSP’s proprietary MTLC (Micro Tolerance Load Control) regulation scheme. 100, 240 VAC, 50, 60 Hz.
Inside, the supply is well protected within a molded cardboard housing, with the accessories boxed separately.