I'm new to gaming world. I have an old rig with Asus P5SD2-VM mobo. Intel Pentium dual core e2200 at 2.20 GHz, 2GB RAM, Resolution of 1024×768. I intend to buy a new graphics card. I am very casual gamer and my budget is limited to 3500 INR. Suggest me for the same which would provide me max proformance from this rig.
PS: I don't have budget to change my mobo or processor.