After starting a thread here on graphics cards I nearly bought a 5670 becuase of its DX11 features. However before I purchase it, I wondered what is the best card available for DX 10.1. I am looking for the most FPS and the card MUST fit in a single slot. Ideally I would like amazing performance with Fallout 3.
I decided it might be better to go with an older card that is DX 10 only if the performance is better for the majority of games.
We need a budget, your CPU name PSU name and wattage.
Without those and only thinking your system meets all the requirements for the card I suggest a 9800GT/9800GTX single slot.