not to harp on previous posts, but I always see peeps calling for the hyper 212,,, it's a good cooler,, BUT for amd systems it has some extra work to install,,, AND for all systems you need a good amount of clearance in your case as 120mm fan = bit cooler.
you will need to bracket work for this cooler for amd attachment
for your setup I'd recommend the Scythe Katana, same price range as the Katana, but is a 92mm fan and it is angled so it blows air on you MB a bit and towards back of case without any change to your MB (most fans mounted to AMD MBs will blow up or down unless you change bracket) - it's also very quiet - i use it myself and fit nicely in my gateway case.