This blower uses a turbine instead of fan blades, a novel idea. I installed the blower with my PC lying on its side, with the thin side of the blower facing up. However, when I placed the case upright, the unit began emitting a dreadful noise.
I kept changing the orientation of the case -- upright, noisy; on its side, quiet. So I removed the blower and noticed that when I pressed the rear label, the noise stopped. I removed the label and discovered that the blower rattles unless its shaft is pressed in.
Evidently, the label wasn't seated firmly and therefore wasn't pressing hard enough on the shaft. Gravity did the rest. I solved the problem by cutting a piece of tin the same size as the label and gluing it over the area surrounding the shaft with contact cement.
The blower comes with two Molex sockets, which is fine if you have compatible plugs in your PC. I don't. One of my other fans, a Vantec Stealth, came with two Molex and two three-pin connectors, which facilitated installation. Why don't all fan-makers include two types of connectors?
As far as the fan's functionality, it ejects a fair amount of hot air, enough to cause a 15-degree (F) drop in temperature at the graphics card. I give this blower 3 1/2 stars -- less one star for what I consider a design defect and half a star for not including alternative connectors.Get more detail about Antec Cyclone Blower Case Fan for Any Expansion Slot.
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