Bump. More info:
I've successfully used K10 stat on an A6-3420M but the most recent version I can find is 1.54 from Aug 2011 and it when I try to use it on the Richland APU, it gives the following error: "Can't detect family 10h/11h/12h/14h processor". I've also tried AMD Overdrive which will work for undervolting but won't let me go higher than 2.1GHz.