I run a Gigabyte GA-990FXA-UD5 (rev. 3.0) board with that CPU. I'm using a Cooler Master Hyper 212 Plus heatsink and fan. The CPU is running nice and cool at 30c.
The temp is kinda low ,are you sure the board is not throttling the CPU?
When you are gaming heavily does it hit turbo core clocks often or ?!
They can support it but in practice never letting the CPU hit the high performance levels at all times.
Kinda like the Gigabyte board in my signature.Whenever the Turbo is active in BIOS it simply resets as reported by many other users.That Turbo is in my case a feature of the APU that is disabled by default in BIOS ,something never reached , even though i payed for it when i ve bought ,in my case, that APU.
Be careful ,Gigabyte BIOS engineers are sneaky
2 Gigabyte AMD boards throttling middle range CPU-s for me already that is why i am distrustful..
It works but only with specific limitations keeping the CPU in control.