GideonTech has the super quiet HSF from ThermalTake on the review block today.

What exactly is a hydro wave bearing? It's Panasonic's answer to the problem that plagues most sleeve bearing type of fans, axial friction. The hydro wave bearing system uses a thrust plate that floats on top of a circulating layer of oil. This greatly reduces the amount of friction, which in turn greatly increases the life of the bearing itself.

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