I would also consider a better CPU cooler, the Be Quiet Dark Rock PRO or Advanced works very well on AMD CPUs.
BeQuiet Dark Rock Advanced CPU Cooler (Socket LGA 775 / 1155 / 1156 / 1366, AM2 / AM2+ / AM3 / 754 / 939 / 940)
BeQuiet Dark Rock Pro CPU Cooler (Socket LGA 775 / 1155 / 1156 / 1366, AM2 / AM2+ / AM3 / 754 / 939 / 940)
And dont forget to set up those system fans in a proper push pull configuration, so pulling cool air in the front of the case, pushing hot air out of the rear and or top of the case. Also Dust filters use them always.