Sorry guys(and girls) i didnt no where 2 put this thread so i put it in cpus and overclocking.. any ways my question is what causes your computer to slow down because my computers slowing down but i still havent fully used my cpu's to 100% and i still have around 600mb or ram free what can cause my computer to go slow its currently useing round 60% of each cpu(duel core 4800+) and using 400mb of ram of my 1gig stick this is wat i am doing .. defraging, one drive and copying stuff form another 2 harddrives(dont worry im not writing onto the defraging one or copying off it)