A Detailed Look
The SilverStone ST30SF and ST45SF are nearly identical so in this section we will focus our attention on the ST45SF. Later, we will present the test results for both units. The SilverStone ST45SF power supply enclosure is painted with a satin black finish and measures 100mm deep x 63mm x 125mm. The back panel includes an On-Off switch, AC receptacle and open honey-comb grill.
The power supply uses a 92mm x 15mm fan made by Globe Fan for cooling (RL4Z S0921512H). The fan incorporates a “Duro Bearing” which is marketing speak for an enhanced sleeve bearing to provide quiet operation but with longer life than you might typically get from a standard sleeve bearing.
All of the fixed cables are covered with black mesh sleeving. The cables are intentionally rather short as this power supply is designed for use in small-size cases.
Note: The cables and connectors used on the two power supplies are the same except that the ST45SF includes an additional 6+2pin PCI-E cable/connector that the ST30SF does not have.
ST30SF Cables/Connectors: (Courtesy of SilverStone)
ST45SF Cables/Connectors: (Courtesy of SilverStone)
Under the Hood
Here are a few pictures showing the layout and components inside ST45SF power supply. SilverStone is one again using High Power as the OEM for these SFX Series power supplies. The overall layout, soldering, and build quality all look good.
The power supply features a modern circuit design to meet the 80 Plus criteria for Bronze level certification and uses DC-to-DC converters on the secondary to produce the +3.3V and +5V rails from the +12V output. The primary electrolytic capacitor is made by Nippon Chemi-con and is rated for 330uF, 400V and 105°C.