Two PCI-E(6+2 Pin) Power Cables.
This is a very detailed guide, that is very awesome. Seriously I'm impressed.
However, under your own recommended power supply, there are only TWO PCIE cables. So you apparently you disagree with EVERYONE on the overclocking thread the you need 4 pcie cables to power the S3.
This is the issue we keep harping on, not the power draw, not the 12V rails, its the wires. Everyone says you need 4, then everyone suggests you buy a power supply with 2. I fully expect that I'm missing something here, but so far, people just keep acting like they don't understand why I'm not getting this. But when you tell me I need 4, then you give me 2, I'm going to ask questions.
These days I always recommend using 4 cables for S3 even if not overclocking.
But if we go for a PSUs considering the PCI power connector cable numbers, there is no meaning in it.
In the above suggested power supply as already said there are only 2 PCI-E(6+2) power cables.
So you can plug them into your S3. Additionally for the other two cables you can easily buy,
two Molex->PCI connector cable from ebay or other sites for less than a dollar.
http://www.ebay.com/itm/Lot-of-10-Dual-4-Pin-Molex-to-6-Pin-PCI-Express-PCI-E-Video-Card-Power-Cable-ca4-/251594807495?pt=US_Power_Cables_Connectors&hash=item3a943818c7Molex to PCI (Y branch connector) is with low power carrying cable, so use only it as your secondary cable with the PCI power cable. That means 1 PCI Power connector + 1 Molex->PCI connector.