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HiMarkus

macrumors member
Original poster
Dec 16, 2016
33
7
Hello, today I found out (using iStat Pro), that the idle speed of the left fan is about 150 rpm faster than the right one. Is that normal? Anybody can confirm this?

Idle speed right fan = 2000 rpm
Idle speed left fan = 2150 rpm
 

Sanpete

macrumors 68040
Nov 17, 2016
3,695
1,665
Utah
Yes, that's normal. I've seen it in reviews. I suspect it's to help avoid sound peaking at one frequency, which would cause a more annoying sound profile.
 
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DanDilla

macrumors member
Nov 15, 2016
70
12
Lüneburg, Germany
The cause may be the CPU sitting on the left hand side, if I'm not wrong.

Since the GPU shouldn't be producing any heat on idle, there's no need for enhanced cooling.
 
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