So, getting ready to build a file server. I have an old Silver Arrow I never used sitting in my closet. Was thinking I could use the massive cooler, if it fits the Supermicro board, to passive cool the CPU. Still undecided on the exact CPU. Either a Haswell Pentium or E3 Zeon. But, since most of the time it will be doing pretty minimal work, I figured the massive cooler would be enough as long as I have case fans moving air through. I might use it anyway with fans really low. Not sure. Shooting for as close to silent as I can get with out spending a ton.