So that's about 100-110 USD. I have no idea of the availability or price differences in your market but you would be looking at a HD 7750, HD 6670, or GT 640. Personally at that price range I would definitely go for and AMD card not NVIDIA. So I'd get one of those 7750s. It's not super powerful though for 1080p, just as a warning.
And also that CPU is crap for gaming, I'd change your whole setup to Intel and get a Pentium G860 or something around there unless you bought it all already.