thanks for the gracious words, though i honestly deem myself to be far away from that state.
if by study you meant educational-background, then by career am a mariner (marine er.).
and, inquisitiveness is good.
reason : there's ain't much difference between GT640M and 645M sans clock speeds but most of the time laptop gpu part can max out every games .. so if you have to play a game with lowered details or even with high details the i7qm still will be handy as more and more games are getting optimized for multi core cpus.