FSP has crammed a 1200 W power output into an SFX-L enclosure using 0.7 mΩ Infineon MOSFETs and direct casing heat dissipation. On paper, it packs full ATX 3.1 compliance, a native 12V-2x6 cable, and dual 8-pin CPU support into a size usually reserved for lower-power builds. The FSP Dagger PM 1200 W delivers 1200 W of total rated power from a tiny SFX-L form factor, maintaining efficiency with 80 Plus Platinum and Cybenetics Platinum certifications.

As a tier-one OEM based in Taiwan, FSP designs and manufactures the unit in-house, enabling aggressive pricing without compromising performance. Key specs include a 1.25 kg weight, 100–240 V~ input, 50–60 Hz frequency, +12V rail at 1100 A, and active PFC. Features encompass ATX 3.1 (SFX V4.1) & PCIe 5.1 compliance, a 120 mm FDB fan, and comprehensive protections including OCP, OPP, OTP, OVP, SCP, UVP, SIP, and NLO.

The unit measures 125 × 125 × 63.5 mm and comes with a ten-year warranty.