FSP SDA2-650 650W SFX power supply

Compact 650 W SFX unit

The FSP Dagger Pro SDA2-650 is a 650 W SFX power supply built for small-form-factor builds. Its 125 mm length fits Mini-ITX and Micro-ATX cases, and the fully modular design with flat ribbon cables keeps the interior tidy. A 92 mm ball-bearing fan and 100 % Japanese electrolytic capacitors support reliable operation. The single +12 V rail delivers the full 650 W to the graphics card without splitting current across multiple rails.

Suited for tight builds.

This unit targets builders assembling compact gaming rigs or living-room PCs where space is at a premium. The two 6+2-pin PCIe connectors handle a single modern graphics card, while the single SATA power connector limits storage expansion. Systems that require several drives or a second graphics card should look at a power supply with more peripheral connectors and higher total wattage.

650 W on a single +12 V rail

The defining specification is the 650 W capacity delivered through one +12 V rail, which determines whether the unit can power a chosen graphics card and CPU combination in a small chassis. Builder must verify that the GPU power draw and the case SFX clearance match this rating before purchasing.