Running an X3350 is interesting on this board. I need high NBcore voltage and high VTT I can get it to run P95 small ffts for an hour. If I run blend it fails immediately. I would like to blame the memory modules (Crucial DDR2-667 D9GMH) but I also think the NB is being stressed to the extremes here. I had an X3210 that I could run 24/7 at 3.8GHz with only small bumps in the above mentioned voltages and 1.475vcore. To get 3.6GHz with this board and the X3350 I need only 1.296vcore but 1.61vNB and high VTT (sorry, don't remember the value) and still it will run small ffts fine but the blend kills it. It feels like the CPU itself is stable but the NB/memory is a killer.