Vantec Thermoflow TF9225 92x92x25mm Double Ball Bearing Temperature Controlled Case Fan (Black)

I bought two of these to use for cabinet cooling (receiver and PS3) but next time I have to replace a case fan I'm going with one of these. Here are the specs for the 80mm: [...] So basically they start picking up speed ~ 25C (77F). Pros: Quiet, smooth operation - can't even hear them at the lowest speed Separate speed sensor cable to attach to motherboard (if applicable) Power connector has male/female molex so it can be chained together and not consume a power lead Moves a lot of air as the temperature rises Cons: None yet... No cover plate? (but comes with screws) They do a pretty good job of keeping up with the PS3 which pumps out a lot of heat during games. The exhaust of the PS3 faces these fans and they in turn move the air out the back of the cabinet. I just used an old 12v power supply to drive them and it is plugged into the receiver so they come on when the receiver comes on.

excellent choice for those who don't want to setup a fan curve or install in a system without a fan controller they aren't too noisy unless you stick your face where they push air from. it's a shame they don't come in 120mm anymore as i would have some in my pc, it would be even better if they had a switch on the back to adjust the sensitivity to air temperature.

It's nice that it adjusts fan speed to the temperature, although they had an earlier design that was better I think because it had the temp sensor on a short lead so you could place the sensor on whatever you were trying to cool. Now, the sensor is soldered on to the fan itself. You could probably de-solder it and attach a lead, but it works well for me as it is.

Too many lolz. Plugged it in, heard a pop, saw a nice big puff of smoke. OOPS! Will maybe order another, hopefully it was just a lemon.

It's silent most of the time. It has a temp sensor on it by the hub. WHen the air going through it gets too hot....it steps up. It has a mid step which is fairly quiet, and at full tilt....it may be slightly noisier that the other fans in the 2u case. However, I put this at the exhaust of a PSU, so there is nothing in the way to muffle it. Ambient in case temps down about 4-5 degrees...board just 1 or 2.. Now using these in both the 60, and 80mm flavors....I believe they hit the sweet spot dba/cfm. Highly recomend.