If your notebook does not have a good dedicated graphic and you don't wanna spend a bomb to buy or new gaming notebook/desktop, you can consider this

http://www.hwtools.net/Adapter/PE4C%20V2.1.html

http://www.amazon.com/Bplus-version-interface-mPICe-Length/dp/B00ZI33ZQK/ref=sr_1_fkmr0_2?ie=UTF8&qid=1453642721&sr=8-2-fkmr0&keywords=exp+gdc+card

Pretty interesting. Uses the pci express slot of the notebook.

It seems to me more like an trial and error thing.

if it works then OK, but if not?

Dont go buying a titan, try a mid-range graphic card.