no, i'm not done troubleshooting. i'm just done troubleshooting with the parts i have.
my system locks under heavy loads when running sata (either primary with the os, or ide as master1 and sata as master2).
that in mind, i need to further isolate the source of the problem. it's either the a\ chipset, b\ hard drive), or c\ pwr supply. i'm pretty sure i can cross c off.
in order to check the chipset (and not change processors), i'd have to degrade down to the 848 based motherboard. i could order a new drive, instead. or i could give all logic based troubleshooters the finger and throw two new variables....a new amd based mobo and processor. wouldn't eliminate the drive as a potential bad, but it would the chipset. most likely i'll try to rule out the drive, first.
again, based on all power tests, i doubt the psu is to blame.
and yes, i've otherwise isolated this as much as possible (disable onboard nic/audio/usb/etc, remove all pci devices, remove optical devices, etc.). this is the end of the line.
but my word, thanks for the repsonses. keep em coming.