I've noticed that there are a lot of gamers with 300$ i7's running with 250$ GTX 660's and the likes, I'm new to this whole pc building scheme but I feel like that's completely wasting your processor. With such an expensive processor (with the correct slots) shouldn't you be buying a 400-600 dollar GPU minimum? Also as a side note is it a better idea to buy an expensive gpu like a GTX 780, or would it be better to use 2 graphics cards, say 2 GTX 680's? Thank you.