So I've finally decided I will pay the extra to upgrade from a GT 650M to a HD 7970M, as I think it will be worth it.
So the main components are:
i7-3610QM at 2.3ghz
8GB Samsung 1333mhz RAM
AMD HD 7970M 2.0GB DDR5
500GB Seagate Momentus XT Hybrid
All i wish to know is now is if the other components such as the i7 will be adequate enough to get the best out the 7970M?
Once i get some feedback on this I am happy to say it will be ordered!