Seasonic SS-300SFD 80 Plus: Little Big PSU

Power
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INSIDE THE SS-300SFD

The unit opens up into two C-sections, roughly speaking. It's pretty tightly packed, and the staggered fin aluminum heatsinks seen in other Seasonic PSUs are also used here. Getting it open without causing any damage was a challenge.


A full house inside.

The fan is the same model used in some previous Seasonic power supplies. It is made by ADDA, a good brand. It is a sleeve bearing model rated at 0.25A at 12V. I could not find the sleeve bearing version at ADDA's web site, but the ball bearing version is rated for 38 CFM and 34 dBA (presumably at 1 meter). The sleeve bearing may be a bit quieter; it is usually smoother.


Innocuous 80mm sleeve bearing fan.

Because the space in this PSU is quite constricted, it's probably good or cooling that a relatively high speed fan is being used. Hopefully, at typical power loads, the fan controller will keep the speed and noise of the fan in check.

CABLES AND CONNECTORS

There are a total of five cable sets. They are all quite short, but as the PSU is meant to go into a small system, the lengths are probably about right.

  • 11" cable for main 24-pin ATX connector
  • 11" cable for 4-pin AUX12V connector
  • 15" cable with two SATA drive connectors
  • 2 x 18" cables with two 4-pin IDE drive connectors and one floppy connector


Short, plain cables: The ruler is just 18" long.



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