so i got a good cpu cooler and I like to keep it quiet (one reason is because when I masturbate at night I don't want my parents hearing the fan lol.) is it safe to let the CPU get to 60 or 70c? I have it overclocked to 4.5ghz and it idles at about 38c. what is the most i can let the temps go to be unsafe? thx. silent is 30 percent fan speed