kirilmatthew :
Sorry, it will not. Your best bet is a radeon 7750, which is probably just as good as the 6670. I highly recommend a better PSU though.
So will the 7750 work with my PSU? I would upgrade but I can't as I am using my Dell OptiPlex which has a proprietary PSU. I am using it until I can complete my own build which I am saving up for atm as I am a student. Just a quick question, could you recommend any cheap Graphics Cards that will fit my low profile PCIe slot that will allow me to dual screen and play Football manager at a decent (but not major high) rate?