For your Cpu i recommend either an Fx 6300 or an Fx 8320. Both will work great in an Asus m5a97 r 2.0. I personally use an fx 8320 in that mono. For a PSU: http://pcpartpicker.com/part/seasonic-power-supply-s12ii620bronze
Thanks @TheIronDUke for your valuable suggestion.
I am sorry to say that Seasonic PSU is not that much available in my area, so what about Corsair PSU ?
FX 6300 is good choice, it is best for my budget. But as far as I know AMD will beat Intel in everything except single core performance. So for gaming, do we need to consider single core performance ?
Instead of "Asus m5a97 r 2.0" I would like to go with "Gigabyte GA-78LMT-USB3". Is it OK ?