External Examination (continued):
The below left image shows the power supply, its massive bundle of cables, the included mounting screws, and an AC power cord that is a bit heavier than the ones I am used to (14AWG). The below right image shows the bundle of cables up close and it can be seen that everything is wrapped in black mesh with heat shrink tubing used to finish off each lead.
 
The promotional image below shows all of the cables laid out next to the Silencer 750. There really is a good number of connections, and they are all of adequate length to work in even the largest of full tower cases.
You have a 24-pin motherboard connection, a 4-pin 12V connection, and an 8-pin 12V connection used on server style motherboards. There are also two leads that provide a total of 6 SATA connections, three leads that provide a total of 8 IDE connections and one floppy connection, two 6-pin PCI Express leads, and two 6/8-pin PCI Express leads. For a complete look at all leads, their lengths, and orientations, have a look at this wiring diagram from the PC Power and Cooling website.
Internal Inspection:
While it is generally perfectly clear that you will be voiding a power supply's warranty by opening the housing, the same isn't true here. The typical warning label over one screw or a seam on the unit that becomes destroyed when tampered with can not found on the Silencer 750. The data label does provide a caution about removing the cover, solely to avoid the hazard of coming in contact with high voltage inside, and honestly that reason is more important than warranty coverage.
 
The PC Power and Cooling website provides details [pdf] on why their fans can run quieter, despite being 80mm units, compared to some of the slower spinning 120mm+ fans found in many other power supplies. The culprit is apparently turbulence caused by obstructions in the fan's path. The PC Power and Cooling solution can be seen in the above right image, where they have distanced the cooling fan from any internal components by at least one inch. This one inch of open space also explains the extra depth this unit has; it isn't due to extra components inside, but simply to allow for this gap.
The image below takes a look at the inside face of the Silencer 750's one 80mm fan. It is an ADDA brand DC brushless fan rated for 0.45A / 12V. A Google search of the model number, AD0812UB-A71GL, reveals that it uses ball bearings, has a top speed of 3900 RPM, pushes up to 50 CFM of air, and can produce up to 41 dBA of noise. While these figures are all part of the specification, typical use in the PC Power and Cooling 750 Quad Black Power Supply may result in lower values since the fan is thermally controlled.
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