I currently have a Intel(R) HD Graphics card which cannot run games like Rome II Total War and Skyrim, I'm looking for a graphics card that can run these games (well) with at least a GB of Video RAM. Please keep in mind I don't want anything expensive I have a low budget and I don't need it to be amazingly good just good enough for the games I mentioned, Thanks

Btw will these Graphics cards be compatible with my computer, HP Pro 3500? With Windows 7?

Sorry but I do not know much about this