No idea. I have little CPU overclocking experience, and none with AMD CPUs. Also, due tiny, random variations in semiconductor fabrication, every CPU will overclock a little differently, even among the same model (e.g. FX 8320E). Depending on your CPU cooler, you may be limited by temperature before anything else. Even power supply could play a role. Really, the only thing to do is find a good overclocking guide and see how far you get, making sure stay within safe temps and voltages (and a good guide should tell you what safe temp/voltage limits are).