Every fan I've used runs with 5v, even LED's

dan · Post by **dan** » Wed Jan 17, 2007 12:21 pm

I'm just providing information, not bragging, but I've not had problems 5v fans using the wire trick on the standard 4-pin PSU connector (in reverse)

and they all sound equally quiet to me

EndoSteel · Post by **EndoSteel** » Thu Jan 18, 2007 12:25 pm

80% of the fans I've tested up to date were able to start at 3.7 - 4V. The most undemanding fan I've seen was some 80mm Yate Loon: it started at 2.25V

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cmthomson · Post by **cmthomson** » Thu Jan 18, 2007 5:31 pm

It is not uncommon for a low-RPM 120mm fan to fail to start at 5V. I've seen this with a Nexus (one out of four samples) and an AcoustiFan DustProof (one of three samples).

SilentKev · Post by **SilentKev** » Thu Jan 18, 2007 9:25 pm

I've had a few fans that have trouble starting at 5V so I always run them at 7V from a standard molex by spanning the +12(yellow) and +5(red) lines. The difference in noise isn't that much to me and LED fans look brighter. It's more reliable than 5V and silent enough for me.

Post by **Ralf Hutter** » Fri Jan 19, 2007 9:53 am

cmthomson wrote:It is not uncommon for a low-RPM 120mm fan to fail to start at 5V.

What he said, plus add to that list various Panaflo L fans.