to put bluntly, a core i5 2500k or higher would be better for gaming unless you already possess an amd chipset motherboard. fx8150 chokes current gfx cards in gaming, fx 6xxx does it worse. a 2500k+gtx670 would be quite powerful for latest games.
if you must get an fx cpu, then yes, the fx 8150 would be the better buy.
Alright, thanks, I will probably get the i5 CPU and motherboard o go along with it.