Yeah, about the same CPU generation as my 740's Athlon 64 X2. I would go for a low profile 6570/7570/6670/7670. I would avoid any 'silent' cards, as Dell's stupid decision to put a large heatsink on the onboard graphics chip, which is right next to the PCI-e slot, means you have to choose a card with a slimline cooler, which sadly means most silent colling cards just wont fit, as their heatsinks are too big and hit the onboard's Dell heatsink.