Actually, with i7's hyperthreading (which is in iMacs now and a few laptops) common desktops effectively have 8 "cores" to play with. There are 4 hardware, and

Actually, with i7's hyperthreading (which is in iMacs now and a few laptops) common desktops effectively have 8 "cores" to play with. There are 4 hardware, and 4 virtual, it still shows up as 8 completely usable cores in activity monitors and such.