i recently bought an ASUS A88XM-E, A10 7870k and 2x4GB DDR3 2400MHz G.Skill Ares RAM.
When i put load to the APU (Prime95,Games) the CPU begins to throttle after some minutes. I have already checked if it´s a thermal problem, it is not. The temps are all fine and sometimes it throttles at 55C, sometimes at 65C. It also seems not to be a TDP Problem as it does not get above 95W (looked up in Asus AI Suite). I have also underclocked and undervolted it and set every possible BIOS Setting to cause it to consume less power. And also the other way around, i tried giving the CPU a bit more Vcore and Overclocking capability (Power Phase Control, Load Line Calibration,....). it throttles down to 1,6xx GHz no matter what i do, even if i clock it down to 2,5 GHz. This generates massive Framedrops in Games, for example 120-35 FPS in CS:GO.
I have read about some other people who seem to have similar problems.
I hope someone can help and sorry for my english