i oced it to 4.7 and i got max temps of 63.5C but just for a couple of secs ... avarge temps are 58C ... (prime95 30mins without errors) .. is that good ?
ok. sounds like you're at the end of your overclocking. 4.7 is pretty good on air... most air coolers hit their limits on piledriver around 4.4ghz-4.8ghz
It is most-likely thermal throttling. As on my 212 evo which is considerably better than the 103, I can only get 4.5 Ghz out of it..
Download core-temp, then when you run prime 95 check to make sure that the clock isn't dropping...