they all have the same chips for CPU memory video and most of the other stuff
you can pick a windoz machine with mac like chips
for the sound and network [the picky ones]
and load the 29.95 mac O/S as a dual boot with a free installer program
and save about 1/2 the macbook price 500 vs 1000 on the low end
and save thousands on a desk top by doing a hackintosh
OSx86 Installation - InsanelyMac Forum