so the lower the multiplier the better performance? cuz the athlon 64 FX has like 1600FSB and 2.4/1.6 is like 1.5, so that is pretty low multiplier.
??? No lower multiplier doesn't mean better performance. Multiplier only determins how fast the processor is working. What I said is with the mobiles you can up your FSB and lower your multiplier so you could run it at 400FSB instead of it's stock 266. And AMD64 doesn't have a multiplier of 1.5, and I don't know what your division problem of 2.4/1.6 is supposed to be. You can't divide the FSB by the total clock speed to get the multiplier. The FSB is created from the CPU Frequency and whatever it's set at. The CPU Frequency on those chips are at 200, but unlike the XP's that have an Frequency of 200, the 64bit chips have something like Intels Hyperthreading that's almost like having more than one processor that creates a faster FSB between the system. I'm not fully educated on how the higher FSB boards work yet though so I can't honestly tell you fully how it works at the moment. The fastest 64bit board right now I think is 1000FSB. I think there is a 1600FSB Intel board, but at the moment I don't believe it's fully utilized and isn't worth the extra money or so I read in a toms hardware guide article.