http://www.techradar.com/news/computing-components/graphics-cards/best-graphics-cards-1291458

Even though you can buy a souped-up pre-built PC sporting multiple graphics cards and an 18-core processor if you so desire, you’re best off checking out the cheaper option before putting down any cash. More specifically, we’re talking about building your own computer. While it might seem like a demanding task to carry out, it really doesn’t have to be. 

One of the most important first steps of building a PC, of course, is picking out the best graphics card for your budget. Taking into consideration that not everyone is made of money, the best graphics cards don’t always mean the most expensive. Some are more about providing you with sublime value than real-time 4K graphics at 60 frames per second.