if you do a lot of multitasking, multi core cpus are for you
(also if apps you use are multi threaded)
edit: is the p4 dual core? it says (2 x 3.00GHz Core Speed) but doesnt say dual core like the other one =/ if not, wat does it mean?
edit 2:
[offtopic]
that must be an insanely fast pc
[/offtopic]