What you want to do is go to your maximum stable overclock. Take the usual volts and reduce them below what would normally be stable. However You want the voltage high enough that the PC will not crash for atleast a few hours during each session.
It usually takes a couple times to get the hang of it, but keep with it. While this is not GARUNTEED to work it does to some extent on any CPU reguardless of how old it is. As always your milliage *will* vary.
I believe hot cpu tester is the app or choice to burn in with.
Thoughts on this one?
I know superpi 32m and OCCT or considered "quick" tests for stability.
I've used HOTcpu a little before (I like the GUI), but generally test (overnight) with either Prime95 or SiSoft Sandra's burn-in suite
Primarily I'm testing the physical stability of the motherboard(s) 'post-op' (replacing capacitors) so longer duration stability tests are my need/focus
BTW got your message r/t Beater Benching, sadly I no longer own any complete SS7 systems (save for the Cyrix firewall), I may endeavour to dig out a PIII-800 though
I guess prime95 is one of the main stability testers out there. Re-capping a board... you must be one of the badcaps folks I'll be on the look out for your P3 Taz.