The SilverStone Olympia OP750 power supply supports the ATX12V v2.2 and EPS12V specifications and is rated for a combined, maximum output power of 750 watts at up to 50°C ambient air temperature (internal PC case air temperature).  The OP750 PSU incorporates universal input (automatically adjusts the AC line voltage) and active PFC that adds to the units environmental friendliness. It uses a single 120mm cooling fan and all of the cables come hard-wired into the chassis.


Here is the Name Plate data:


SilverStone Olympia 750W Power Supply Review - Cases and Cooling 34


Specifications (from the SilverStone website)


SilverStone Olympia 750W Power Supply Review - Cases and Cooling 35


Single +12V output


The Olympia 750W PSU incorporates a single +12V output.  This is a trend we are seeing in newer power supplies.  Some manufacturers are no longer creating multiple +12V outputs by implementing current limiting circuits into their design to conform to the 240 VA maximum guidelines – no single output should exceed 240 VA (12V x 20A = 240 VA).  Having multiple current limited +12V outputs can lead to power distribution problems, particularly with some power-hungry video cards.  Delivering a single, powerful +12V output is a much better approach IMHO.


Note: According to the OP750 Specifications Manual (Note 2 on page 2) “Single/Multiple rail(s) for +12V is adjustable by a switch.”  This implies that the PSU actually has independent, current limited +12V outputs and that the current limiting circuits can be turned on or off with a switch.  Unfortunately the manual does not give any more information than this and does not say where this switch is located.  However, as we will see later, this switch appears to be located on an auxiliary PCB where the fan and temperature sensors plug into.  In addition, the main PCB is clearly labeled +12V1, +12V2, +12V3, and +12V4.


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