Graphics card advise

I mainly team fortress 2 and was wondering what the best option for a graphics card would be. My 7600gt stopped working a few days ago.
I have a amd 4400+ and 2gb ram.
Would the radeon 4670 1gb 128bit ddr3 pci-express card be a good option to not only run tf2 but other games to come out in the future? Also fell free to suggest other cards that may be better.
I have a budget around 80.

I think that ATi Radeon 4670 will dissapoint you way more than ATi Radeon 4770 and if I were you I would have some ice in the stomach and save up some more for the 4770.

Do you have integrated graphics on your motherboard so you have working graphics on that computer system until you buy the new graphics card?

Here you got some figures which displays the WoW performance with the Radeon 4770, although, keep in mind that their equipment in total are better than yours, so you would get less fps than rated, but still it is an comparison to other cards which is out there.

ATi Radeon 4770 specifications.