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<blockquote data-quote="GCAdidas13" data-source="post: 1017839" data-attributes="member: 557864">it&#039;s not necessary, but running them at 14.4v instead of 12v will definitely speed them up, which means that they will not last as long.&nbsp; Fans are usually rated at how many rotations they will go before the motor burns out.&nbsp; Usually in burning out, the fan gets louder, which will not be good especially if they&#039;re already louder than normal because they are going faster.I put two 2500rpm(@12v) 8cm fans in a very small amp rack for my PCX4125 when i discovered that it was nearly hot enough to fry an egg on... since i put the two fans on it (@~10-11v, mind you) the amp never got past warm.but with 12cm fans you really dont need them to spin fast.. those puppies will definitely move some air at resonable fan speeds.&nbsp; For anyone out there that are shopping for fans, look on <a href="http://www.newegg.com" target="_blank">http://www.newegg.com</a> for fans that have been rated &quot;silent&quot; or &quot;nearly silent&quot; by people who leave comments.GL HFBrian</blockquote>

[QUOTE="GCAdidas13, post: 1017839, member: 557864"] it's not necessary, but running them at 14.4v instead of 12v will definitely speed them up, which means that they will not last as long. Fans are usually rated at how many rotations they will go before the motor burns out. Usually in burning out, the fan gets louder, which will not be good especially if they're already louder than normal because they are going faster. I put two 2500rpm(@12v) 8cm fans in a very small amp rack for my PCX4125 when i discovered that it was nearly hot enough to fry an egg on... since i put the two fans on it (@~10-11v, mind you) the amp never got past warm. but with 12cm fans you really dont need them to spin fast.. those puppies will definitely move some air at resonable fan speeds. For anyone out there that are shopping for fans, look on [URL="http://www.newegg.com"]http://www.newegg.com[/URL] for fans that have been rated "silent" or "nearly silent" by people who leave comments. GL HF Brian [/QUOTE]

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