I just finished setting up 2 systems with 2 5970 each.
It ended up being cheaper than getting a mobo for 4 cards!
So I end up having a resilient mining set up with cheaper cpu's and stable performance.
I didn't overclock the cards much, just 825 mhz GPU / 1200mhz RAM.
Good luck
Etienne: Do you mind if ask what all is in your setup? I was looking at 3 systems running 3 x 5770's a piece, but at that point it seems easier to just bump up a card to the 5970 lol
Power supply won't be enough you need at least 1KW and a 1.2KW is recommendable. :/
Each card pulls a max of 300 watts for a total of 900 and you are still missing CPU, HDDs/SDDs, Optical Drives, USB Devices, Memory, and cooling(fans).
fabianhjr: Thanks man!!!! I've been looking for that sort of an answer haha If I was running the dual setup with only 2 cards each, do you think at 850? or even 750 would work?