Re: RHEL4, 7800GTX, SLI (only one GPU detected)
The beeping is not a code -- it sounds random (althought i'm sure its not "really" random). In any event, i even let the Supermirco tech support hear the beeping over the phone - they said it did not sound like any error code they had ever heard of.
As far as power goes, I have an antech 550W power supply. Both cards have the auxilary SLI power connectors plugged in.