erratic video speed problems

SEOTAIJI

Member
Nov 1, 2000
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when i play divx files on my computer, it runs smoothly for several seconds then it speeds up for an instant and keeps on doing that.. so the videospeed is erratic (sound is messed up too).. im not sure what could be the problem
i just built this computer.. its a p4 2.4c @ 2.7 (900fsb), geil 512 433mhz ram, and geforce4 ti4800.. im thinking the ram could be bad, it wont run at 400mhz... dunno why.. even though i upped the voltage to 2.7 or even 2.8
anyone got any idea's?
thanks :D