Some points to start:
1) these are all LOW-END for gaming cards
2) It also depends on the rest of your system such as your CPU
3) what games do you wish to play?http://www.tomshardware.com/reviews/gaming-performance-radeon-geforce,3018.html
I consider a "decent" gaming card to be an HD6790 or better.
If you want better advice you need to ask very specific questions. Your question is just far too vague for anyone to help.