I seem to only be able to squeeze 3.2ghz out of mine. I believe the 8gb memory is really limiting me. As soon as I push the FSB over 400 I run into immediate problems -- no matter how much I increase mch and fsb voltages. Even as little as 410 -- it struggles to boot into windows and fails prime95 in the first 30 seconds of running. Perhaps I'll try to take out the extra 4gb memory and see if that makes a difference.