http://www.newegg.com/Product/Product.aspx?Item=N82E16812198018
http://www.newegg.com/Product/Product.aspx?Item=N82E16812198016
its better to supply power from 3 12v wires and 3 ground vs 1 12v and 2 grounds with molex/sata. otherwise you'll melt your cables. I powered two gigabyte 5850s on a molex line, this is what happened.
I do that with some of them. But I've got a couple of damn multi rail PSUs that require me to connect atleast one card each to a molex rail and a sata rail in order to balance the load.
thats why i dont do multi-rail psus either. singlerail4lyfe