A Detailed Look

As we mentioned earlier there is a big difference in size between the SFX, SFX-L and ATX power supply form-factors.

While some manufacturers have opted to use the larger SFX-L extended or lengthened version (which also allows using a 120mm fan) Corsair has stayed with the smallest configuration and still managed to pack it with 750W output.

Note the caution label over the power plug that informs new users of silent, Zero RPM Mode at low to medium power.

The Corsair SF750 power supply enclosure is painted matte black and measures a mere 100mm (3.9”) deep.  The back panel includes an On-Off switch, AC receptacle and open honey-comb grill.

The power supply uses a Corsair NR092L fan that operates in silent Zero RPM mode up to ~40% load (25°C room temperature). The NR092L intake fan was designed by Corsair to move more air through the power supply components with less noise. Fan blades are properly balanced to prevent resonance at higher RPMs and the fan features a rifled sleeve bearing for quiet operation and long life. The fan is rated for 0.22A at 12 VDC.

The front panel incorporates nine modular connectors for the power cables, all nicely keyed and labeled.

All of the modular cables are individually sleeved with black nylon mesh covering and are made intentionally short for use in small form-factor enclosures. This could potentially be a problem if you wanted to install the SF750 in a larger enclosure using the provided SFX to ATX adapter plate.

Under the Hood

Here are a few pictures showing the layout and components inside Corsair SF750 SFX power supply.  Corsair is using Great Wall as their OEM partner for the SF Platinum Series. The overall layout, component selection, and build quality appear very similar to the SF600 Platinum model.

(Courtesy of Corsair)

All of the electrolytic capacitors used inside the PSU are Japanese made. For example the SF750 primary bulk capacitor is made by Nippon Chemi-con and rated for 470uF, 420V and 105°C.

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