Difference between Core i3, Core i5 and Core i7
Intel will stop selling Core 2 Duo and Core 2 Quad in 2010. Core is the new range of Intel processors.
Core i3:
* Entry level processor.
* 2-4 Cores
* 4 Threads
* Hyper-Threading (efficient use of processor resources)
* 3-4 MB Catche
* 32 nm Silicon (less heat and energy)