I want to play games at better graphics, and I want it to run smoother. atm, I have a AMD Radeon HD 6670 and an AMD FX 4130 Quad Core Processor. I was thinking of upgrading to a GeForce GTX670. The thing is, I don't really know what I'm doing, and if my pc is good enough to upgrade. If you could help out, that would be much appreciated!