it snot the fan, the noise only comes when im using my cpu, such as loading a website, the noise appear briefly or loading some programs. the fan doesnt make high pitch metal screeching sound. its like the copper cooling pipes r resonating at very high frequency and produce a high pitch sound or...
i have the asus p5n32-e sli plus mobo and e6600. after i oc my cpu, regardless how much i oc, i always get this quiet high pitch noise coming out from the case. i dont know if its from the vibrations of the copper cooling pipes or what not. it just irritating and since then i just use stock...