i guess you can call this overclocking.my first was a amd k62 400 and first m/b fic-va503 for o/c.it was all working fine untill it wouldnt post so i took the m/b out of the case and the case screws for the m/b on the bottom to support it.well i put the m/b back and stupid me forgot to put the case screws for the m/b so it would hold it and well what do you know blew everything up that time,my whole house went black out,memory died,cpu died,everything that was attach to that m/b died that was the last time i tried a 400@450 for k62.