Well, giving you guys an update on the troubleshooting on the i7 rig.
So far I have ruled out the following.
RAM - 1 1/2 pass of MEMTEST - PASSED
CPU - Passed 100 passes of Intel Burn Test
PSU - All Voltages Tested within specs with multimeter
GPU (GX2) - Ran Furmark for about 7 minutes stable. Quit because of temps (100/103ºc)
Meaning, it must've been the sound card causing the issues. Rig is crunching at defaults as of now. If everything ok by tomorrow, I'll pick up the tech station a bit as it is a mess now and load my 4Ghz daily settings and see how that goes
night everyone, gotta be at work 8am and it's now almost 4am
EDIT: woke up this morning, rig is still crunching fine. Let's see if when I get back from work it's still crunching