graphic card upgrade

I’m new too, I have (iXtreme M3720), it comes with an NVIDIA GeForce 7100 / NVIDIA nForce 630i.
So far it hasn’t smoothly run a game so I want an upgrade. What should I get?
whit a budget of �50.
Thanks
Answer #1
your not going to get anything fancy with �50 im afraid and probably wont see much of an improvement. if you really want to upgrade with �50 id say something like AMD HD6670.
Answer #2
thank you for the answer.which one will be best for me and not that expensive,
ps:i am not crazy gamer just starting
thank you
maybe this one ???
ASUS EAH6670 1GB GDDR5 DVI VGA HDMI128BIT
or
1GB Nvidia GeForce GT 630 PCI-E Graphics Video Card With HDMI DVI VGA Port