Hi all, I've been using 2011 Mac mini server for almost 3 years now and am thoroughly pleased except for one major thing: the CPU heat increases within seconds when watching e.g. Netflix or HD videos on Youtube. This is within 10-20 seconds followed by the fan speeding up to 5000+ rpm bringing awful noise that totally ruins the watching experience. I've read numerous threads about similar issues. One remedy could be to reapply the thermal paste as instructed ie. in iFixit. However, I am more interested in upgrading the fan itself after reading this: http://forums.macrumors.com/showpost.php?p=18344414&postcount=22 I was surprised that according to iFixit, the same fan can be used in both 2011 and 2012 models: https://www.ifixit.com/Store/Mac/Intel-Mac-Mini-Mid-2011-Late-2012-Fan/IF171-007 Then again, this one shows that there are differences: http://www.123macmini.com/forums/viewtopic.php?p=211773#211773 And the other type of spare fan can be found from here: http://www.amazon.com/Original-Apple-922-9557-610-9557-610-0056/dp/B00B85A5NI/ref=cm_cd_al_qh_dp_t So are there in fact two different types of fans used in both 2011 and 2012 models: Delta Electronics, Apple P/N 610-0164 https://d3nevzfk7ii3be.cloudfront.net/igi/aHAOFJ1VrbZJSpuY.huge AVC, Apple P/N 610-0069 http://i01.i.aliimg.com/wsphoto/v0/...953-610-0164-For-Mac-Mini-A1347-2010-2011.jpg If so, is one of these two quieter by its mechanical construction (bearings etc.) while keeping the CPU temperature down similarly as the other type (i.e. both achieve the same air volume flow)? Delta version name plate says "DC Brushless" whereas the AVC's says "Advanced hydraulic bearing". Would appreciate to know if anyone has looked into this before.