[X4U] iMac CPU fan is 3000+ rpm

[Paul Moortgat]

None of these works.  We'll have to live with it until we buy a new one.
A new 27" (i5) is more than twice as fast.

Paul Moortgat


On 12 Jan 2014, at 15:53, Andy wrote:

> 
> 
>> The WD drive I replace by a Toshiba drive is responsible that the CPU fan of our 2008 iMac is running at more than 3000 rpm.
>> 
>> 
> 
> One model of iMac (probably this one) had a hard drive with a built in temperature sensor. If you use a standard OEM hard drive the temperature info isn't getting through causing the fans to run at full speed.
> Using something like smcFanControl (free) or HDD Fan Control (about £21) which get the temperature info through S.M.A.R.T.
> I found HDD Fan Control to be better.
> 
> 
> Andy