Canary, So you are using TWO rigs to get your 1ghash?
'Cause if you're not using adapters, and your PSU only has four cables (two 6pins, and two 6+2pins), then it can only support two physical cards (not counting on-board GPUs).
I think you are confusing me with gmannn... and it would be very easy to power his setup... 5830's are clearly covered...
5770 only needs 1 6-pin. it would be very easy to convert 4 pin molex to 6 pin. The PSU gmannn is referring to is fully capable of his setup.
Also, cards typically include such molex converters etc... Don't confuse this with Y-splitters...
Hope this helps.