I bought this slot fan in order to sit next to an overclocked GeForce2 Pro and cool my system. Noise was a major factor in my buying decision, so this fan cought my eye, rated at a rather quiet 28db. I just installed it and it pushes out a lot of air, far more than my power supply's fan. It works as advertised, and only occupies 1 pci slot (although it is a tight fit). Concerning real-world noise, It is pretty quiet. The only noise I hear is the noise of the air whooshing out of the back. It doesn't have the oh-so-annoying whine of many cpu fans. However, it is not completely silent. The low "whoosh" sound is present; however, this sound is still rather quiet for the amount of air pushed out. If you need lots of cooling power and want a relatively quiet fan, this will offer just that at a good price.
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