So we know Moore's law every 18 month processors double in speed and more and more transistors can fit on the IC . The transistors get smaller and smaller . But around 2004 processor clock speed hit brick wall of 3.0 GHz with out overheating the the solution to problem dual core!! But how much speed can they get out of a dual core now ? I mean in 2005 and 2006 it shined to see a dual core but 2011 dual core how much better. I mean look we can look at intel core 2 duo and i3 or i5 but really the i3 or 15 is not going be 2 times faster than a intel core 2 duo . The is a limit how much better you can make a dual core . I mean dual core has been around for over 5 years now. Has for new state of art quad core not going to say much about it as I have not read up on quad core . No idea when a 8 or 10 core will come out and how long we can go with many cores or when a engineering problem where they cannot put any more set number of cores. No idea when intel will bring out a i9 may be in 2 years from now.