I've now overclocked this CPU to 3.80GHz and i think thats just about as far as it will go.
My temps haven't changed whatsoever from when it was at 3.60GHz so that's good.
I tried it at 4.00GHz which ran fine at idle, once again with no temp change from 3.60GHz, but when i ran the AMD overdrive stability test, after about 10 seconds the PC got a blue screen error and restarted.