No better than a mediocre gamer.
FX is not the way to go on a new build today.
In particular, a FX-9590 is a terrible joke, it is over priced, over heated, under reliable, and an under performer.
Today, buy Intel kaby lake , a 200 series motherboard, and ddr4 ram. It will cost no more and perform better.
If you are an amd fan, stick it out for a month or two and see what ryzen brings.