JBD123 :
That cooler should be more than adequate if you aren't overclocking. What case are you using? What are the ambient temps in the room? What thermal paste are you using, and have you tried reapplying it?
My case is Thermaltake versa h23 , i have 2 front intake fans and one exhaust in the back , there a big vent in the top where the warm air gets out ,but no option for more fans. My room temp its getting warmer since the heat begun , can't tell you exactly right now , but when i got my pc first the room temp was no more than 20 and after playing near a hour cpu reached 70 c , on idle is great temp -13-18c ...My configuration is brand new , haven't applied paste again they put it togheter in the store from when i buy the parts.