I am currently running an Intel Q6700 processor on an Intel DG43RK motherboard with the stock Intel heatsink/fan. It runs consistently low to mid 60 deg. C. with Arctic Silver paste. That is under a mild load, onboard video, showing Netflix video. I am using an HEC case: http://www.newegg.com/Product/Product.aspx?Item=N82E16811121100 The present cooler has a diameter of about 88mm., and it stand about 71mm. above the motherboard. It appears that I could increase the diameter to 90mm and the height to 86 mm. I would like to use a throttled fan. If anyone has a recommendation, I would appreciate any suggestions, especially from anyone who may be using this motherboard and case combination. Thanks, in advance, for looking.