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I had one of the magnetic fans - it died within months. They are at the bottom of my list - though, it did die a noisy death, so it worked out like a sleeve bearing fan - at least I knew.syukton said:These are SLEEVE bearing fans, which are last on my list due to reliability concerns.
Listed in (my personal) order of preference:
Magnetic bearings
Fluid bearings
Ceramic ball bearings
Steel ball bearings
Sleeve bearings