A recent issue of Machine Design magazine has a small article that may be of interest to HTPC'ers. It indicates that Nidec is testing a plastic material that deadens vibration and noise better than plastics used in current PC fans. It provides a lot of gory details on the material (30% glass filled polybutylene terphthalate or PBT, I'm not making that up 
), but unfortunately no numbers on dB improvement. Something to watch for in the future.
), but unfortunately no numbers on dB improvement. Something to watch for in the future.
