I have read the posts on the forum: http://www.tomshardware.com/forum/216866-28-conroe-temp... and they seem most relevant to me. My cpu temp is in the high 30s and my core temps run in the mid 50s (15 degrees higher). I had bought a heat-sink with pre-applied thermal grease. Took this off and reapplied Arctic Alumina. It only dropped the cores a couple of degrees (I use core temp to measure). I do not overclock. My speedfan readings are: CPU0 Fan 2377 RPM. Is this fast enough? Thanks in advance for any advice.