Ok this is the deal: I am planning on buying me a 20" 2.4 Imac in October.. (will be my 1st mac) , however I do not understand this processor speed configurations. Currently I have a almost 3yr old PC that has a processor with a "speed" of 3.4 gHtz and a FSB of 800. How would my New IMac will compare with those numbers?? Thanks... I dont get it. Tried to google it and look in the forums and have not found a clear 4yr old type of explanation to this... All I get is more confused... .