So the lead is only 15% if you actually use 64-bit Windows. BTW, I've switched back to 32-bit XP yet again, after my 3rd stint in x64. There is simply no advantage and lots of little quirks.
Indeed and that synthetic bench is further reduced from a 6% difference in actual performance with the AMD architecture. the fact is that Conroe is a great 32-bit CPU ... problem is we're on the verge of a 64 bit shift. So AMD - with the AM3 4x4 - continues to push Intel to keep up ... or so that's my take