Whats the different dual core to icore3

Your title says Whats the difference between dual core and icore3 and then in the post your asking the difference between Windows 7 and Windows 8.

What is it tha you want to know ? With this being the Windows 7 forum maybe you should ask that question in the Windows 8 forum.
I think the main difference is in the desktop and the way you use Windows 8 , so far I have not heard a lot of positive reviews for Windows 8.