get a MSI 6905
set voltage to 1.8 or 1.85 V
set CPU override, coppermine 256k, 100fsb
boot. if it flies you got a good chip, if not up the voltage to 1.9v and try
again.
if not, you got a bad chip.
that simple.
I think i'm gonna sell my 633@950 (kit GORB/MSI) real soon on forsale forum