What's weird is the MTBF for the ball bearing fan is 60,000 hours on Thermaltake's website, while the Panaflo MTBF fan is only 50,000 on Thermaltake's website for the Silent Boost.Originally posted by: chilled
1889: Panaflo M1 Hydro-wave bearing fan
1889-01: A ball-bearing fan.....dunno who its made by though, but noise levels are quoted as being the same.