So right now, I am basically a PC noob, and was wondering what the best dedicated graphics card would be to go with an Intel Core 2 Duo E7500 @2.9GHz. I currently have an NVIDIA GT710 installed, but correct me if i'm wrong, I feel as though it may be getting bottlenecked by the crappy CPU. The PC is a Dell Optiplex 380 which I bought refurbished on Ebay for £100.