My e5200 requires 1.36v to reach 3.2, on a p5b-plus. I've heard others do much better, but either way you will need well over 1.4v to reach that speed, and that's something some of us will not recommend.
omg u lucky @#^$^@%#^!$!#!#$^!&$#!^&. mine was stable at 300mhz fsb and not one bit higher... even with 6x multi. RAM was fine, mobo was fine, just the CPU not having enough balls to take the bandwidth.