Way back in the Ancient of Days (about 4 years ago, I'll say), I had an old AMD K6-2 300mhz that wouldn't run Half Life with an old 64mb nVidia MX-400. So I whipped out my trusty little floppy drive (I can hear the groans already) and updated the SiS 530 MOBO BIOS so that I could experiment a little.
I got the thing to run at 500mhz without a hitch, all said and done. The most nerve-wracking thing about it was watching the little cursor blink on the bios updating screen and praying to God I didn't lose power! Don't ask what the temp was under load, I never found out and wouldn't be surprised to find out that I was just a few cycles short of a full and spectacular CPU meltdown. (Which would almost have been as exciting as actually PLAYING Half Life....).
My Current Rig:
Asus M2A-MX SE Plus
Phenom x4 9850 O/C'd to 3.0ghz from 2.5ghz (CM Hyper 212 Plus - 48°c Under Load)
2gb Kingston HyperX 1066mhz DDR2
ATi Radeon HD 4650See dumps below
No overvolting was needed. This snapshot was taken after a stint on Heavy Load (16 hours) It gets the job done, no frills. Could'nt validate because I keep it off the net so as to avoid viruses...its just for lan parties and fragging sessions. As a late update:
I ran Prime95 for 8 hours solid on my Phenom x4 9850 BE system and it never got unstable, nor did it's core temps reach anything over 62°c. (And when I stopped it, my Hyper 212 cooled the proc back down to 43°c in no time.... awesome part. I strongly recommend it to even those who just want their proc's to last WITHOUT o/c'ing them).