Pancho it can be clearly assumed you do not like limited lines or Modular power supplies.
Unless it is a nonstandard form factor psu it is a single transformer aka single rail unit by definition.
For your repeated question about drawing 20amp from one lead: You will first melt the wire, and secondly only tec's use that much juice where you DEFIANTLY run a separate psu. You wouldn't want to run a 20amp tec on a normal psu, it would trip overcurrent protection on even pcp&c psu's as they all have trip points, they just say they don't.
For your repeated statements about "lost amperage" take this example.
You have a power supply that only produces 20amp of 12v. There are two
outputs each capped at 15amp.
Rail one is the ATX 24pin connector and the PCI-E connector, Rail two is the Workstation (8pin eps) connector and a 3molex lead.
Please explain to me how you are going to waste voltage on this psu.
BTW those with a OCZ gamexstream power supply (may apply to others with ocz psu's) I just realised my 12v wires are all color coded as to which rail they belong to.
No stripe - 12v1 motherboard 24pin, molex/sata leads
Green Stripe - PCI-E 2 connector/2 of the 4 EPS12V leads
Blue Stripe - 2 of the 4 EPS12V leads
Black stripe - PCI-E 1 connector
(for the source nazi http://www.extremeoverclocking.com/r...am_700W_1.html