OK, here is the setup...
2x1000 watt psu
1x750 watt psu
3x5970
5x5870
2x msi 890fx-gd70
main PC
My main pc is running windows 7 and has a 5970 using cgminer to mine. It does not matter which of the 3 5970 is in there, they all run fine. No issues, all 3 cards work great.
The 5870's are split up, 2 on one mb, 3 on the other. No issues, all run great.
If I need to I can use 2 PSU on one machine.
there is a 5970 on each of the motherboards, and at first it runs fine for a few days, but lately I need to reboot the machines every 30 minutes. If I swap cards with the main machine, the card works fine.
I have a killowatt, and I see the psu is never drawing more than 800 watts from the wall.
I am using the latest version of BAMT, and not using cgminer. Running off a usb.
What the hell keeps changing that the cards stop running?
Try a noOC in the ACTIVE folder.
cd /live/image/BAMT/CONTROL/ACTIVE
cp ../noOC .