Over at Twisted Mods they take a look at the Vantec ThermaFlow Case Fans :
The Vantec ThermoFlow series of fans would make an excellent alternative for anyone replacing their case fans or an individual building a new computer. The added advantage of having thermally controlled speed eliminates the requirement of having an external device to control the speed, thus a cost savings. Dual ball bearings help reduce noise and prolong the life of the fans. Along with a Lifetime Warranty, makes these fans a very attractive alternative
