MicroATX MSI board boasts passively cooled Celeron
 

Passive cooling is the holy grail for folks looking to build quiet PCs. It's particularly important for home-theater rigs, and MSI has a new motherboard that looks like a good fit for that mission. The C847MS-E33 takes an ultra-low-voltage Celeron processor and NM70 chipset from Intel's catalog of notebook parts and puts them on a microATX board. Since the CPU has a thermal envelope of only 17W, it can be cooled with an unassuming-looking passive heatsink.

http://techreport.com/news/24049/mic...cooled-celeron