First start your own thread, your question has nothing to do with the original posters questions, theirs is a desktop system yours is a laptop.
2nd Your running a Laptop, a vast majority of laptops are not upgradeable in the graphics processors. if you need or want a laptop for gaming, people need to buy one made for it. if your running a 3650 already in the laptop, you should be able to play many games on lower settings already. just won't be able to crank up resolution settings and extra Eye candy options. or run games like Crysis with acceptable frame rates.
but as I mentioned you really should make a new thread about your questions before continuing as its unrelated to the original thread here.
hardware
prices 
