I have been trying to figure this out for a while now. The wiki doesnt really say if there is a difference. I just want to know what the performance difference is. Some sellers on ebay claim that the P-III-M actually performs well above its clock speed. I thought that was about the Pentium M (which is based on the P-III.) Anyway, any help here is appreciated. I mean is the P-III-M the same as a pentium M? If not, is a P-III-M pretty much the equivalent of a p-III?