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Compact SFX power supply with matte black finish, 92 mm fan grille and fully modular cable sockets

FSP

FSP SDA2-650 650W SFX power supply

SKU CH-366Y-TBKD1 MPN SDA2-650

SFX form-factor unit delivers 650 W through a fully modular design with flat ribbon cables, 80 PLUS Gold efficiency above 90 % at typical load, a single +12 V rail.

  • TypeATX 12V
  • Maximum Power650 W
  • Fans1 x 92 mm
  • PFCActive
  • Main Connector24Pin
  • +12V RailsSingle

Options SFX 80+ Gold (650W)

  • Full modular design with flat cables simplifies builds in tight SFX cases
  • 80 PLUS Gold certification delivers 90% typical-load efficiency
  • Single +12V rail provides stable power for high-end graphics cards
  • 92 mm ball-bearing fan runs quietly while cooling the unit
  • Japanese electrolytic capacitors ensure long-term reliability

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.

Highlights

  • Full modular design with flat cables simplifies builds in tight SFX cases
  • 80 PLUS Gold certification delivers 90% typical-load efficiency
  • Single +12V rail provides stable power for high-end graphics cards
  • 92 mm ball-bearing fan runs quietly while cooling the unit
  • Japanese electrolytic capacitors ensure long-term reliability

Specifications

BrandFSP Group
SeriesDagger Pro Series
ModelSDA2-650
TypeATX 12V
Maximum Power650 W
Fans1 x 92 mm
PFCActive
Main Connector24Pin
+12V RailsSingle
PCI-Express Connector2 x 6+2-Pin
SATA Power Connector1
SLIYes
Haswell SupportYes
CrossFireCrossFire Certified
Max PSU Length125 mm
ModularFull Modular
Efficiency> 90%
Energy-Efficient80 PLUS GOLD Certified
Over Voltage ProtectionYes
Overload ProtectionYes
Input Voltage110 - 240 V
Input Frequency Range50/60 Hz
MTBF>100,000 Hours
Dimensions125 x 63.5 x 110 mm (4.92" x 2.5" x 4.33")
Weight1.182kg (2.61lbs)
Shipping weight1.70 kg
Package size241 × 184 × 108 mm

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Questions about this item

How can I verify the 80 PLUS Gold certification is active after installing the SDA2-650?

The PSU meets the 80 PLUS Gold standard with efficiency greater than 90 percent at typical load. You can confirm operation by monitoring system stability and power draw under load using software tools or a hardware meter.

Which cables and connectors come with the FSP SDA2-650 and what must I source separately?

The fully modular unit includes flat ribbon cables for the 24-pin main connector, two 6+2-pin PCIe connectors and one SATA power connector. Any additional SATA or peripheral cables required for extra drives must be purchased separately.

Which version of the Dagger Pro series should I choose for a 650 watt SFX build?

The SDA2-650 is the 650 watt model in the Dagger Pro lineup. It delivers 650 W from a single +12 V rail in an SFX form factor 125 mm long, certified to 80 PLUS Gold with a 92 mm ball-bearing fan.

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