I had trouble with temps with your setup, try reseating the cpu and use some artic silver 5, make sure you do two small lines along the heatpipes and twist it a bit when on to make good contact and check it's on level. Over then that inprove your airflow, mine was not getting enough intake (p182) so I increased fan speed and opend doors on front temp dropped 15c! just by doing that. Tidy cables too. Mine was idleing around 51c when I first installed it and was going nuts, got it down to 32c eventually, just needs patience and trial and error. Keep us updated. Definatly change to as5 and get working on airflow!. Good luck.