The cabling arrangement on the SilverStone ST1000-P gives you plenty to choose from so that you can use the full 1000W of power available. Length of cabling for the most part is plenty for most of your needs, but it is the PCI-E cable lengths that bother me. It seems that someone at SilverStone thinks you need four PCI-E connections at 22 inches.
Since GPU's only require two at most, those who need all six connections might be out of luck if their first GPU is at the 22 inch mark, as it would render two of the connections useless. Sure, an extension could be purchased separately, but that isn't something you want, or should, need to do with such a high end power supply.
As all of the cables of the ST1000-P are modular, grouping them up just looks like a cluttered mess. Splitting them up for two pictures, we can see the main 20+4 pin, ATX 4+4, EPS12V, and PCI-E connectors in the first picture and the rest of the modular cables in the second. With all of the cables modular, SilverStone offers an optional short cable kit so that your system isn't cluttered with excessively long wiring if it isn't all needed.
As SilverStone has opted for a single 12V rail for power distribution, there isn't much to talk about here. The single 12V rail makes installation a snap since you don't need to worry about power distribution yourself.
A Look Inside
Popping open the ST1000-P, we see the ability for a large amount of heat dissipation via the implementation of heatsinks attached to almost everything.
Primary caps are high quality Japanese made and are rated for 105C, but the secondary caps are Taiwanese Teapo capacitors. It is impossible to get a shot of these as they are tightly tucked in behind all the wires.