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please share your 2017 new imac 27' idle fan speed and CPU temperature

robertchen117

macrumors newbie
Original poster
Jun 23, 2017
9
1
today I notice the computer voice now.

I do not play games, just open a few chrome pages, did not open too much applications.

Right now the fan: 1202 RPM,
cpu temperature: 42C
Ambient Temp: 30C

Please share yours, thanks.
 
Last edited:

EugW

macrumors G3
Jun 18, 2017
9,144
6,538
What machine do you have?

Mine:

Core i7 iMac 4.2 GHz with 1 TB SSD and Radeon 580
Core temp 41C
Fan speed 1202
 
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SaSaSushi

macrumors 601
Aug 8, 2007
4,116
508
Takamatsu, Japan
4.2GHz i7 with 40GB RAM, 512GB SSD and Radeon 580.

At the moment:

Core Temp: 45°C
Fan Speed: 1196 RPM

Ambient Temp: 27.4°C
 
Last edited:
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macryan1

macrumors member
Dec 13, 2009
49
8
today I notice the computer voice now.

I do not play games, just open a few chrome pages, did not open too much applications.

Right now the fan is 1202 RPM, cpu temperature is 42C.

Please share yours, thanks.
[doublepost=1498618395][/doublepost]While running a fairly intense flight simulator: i5, 3.8, 580, 16GB RAM. Very slight fan noise...not bothersome whatsoever.
 

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doom102938

macrumors newbie
Mar 9, 2012
18
4
today I notice the computer voice now.

I do not play games, just open a few chrome pages, did not open too much applications.

Right now the fan is 1202 RPM, cpu temperature is 42C.

Please share yours, thanks.
Maybe another piece of information that can be useful is your ambient temperatures!

Cheers!
 
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mabaker

macrumors 65816
Jan 19, 2008
1,123
309
This is interesting - the iMac 2017's fans run at the same speed as the 2015 model but seem to be more audible? Can anyone confirm?
 
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SaSaSushi

macrumors 601
Aug 8, 2007
4,116
508
Takamatsu, Japan
This is interesting - the iMac 2017's fans run at the same speed as the 2015 model but seem to be more audible? Can anyone confirm?

Are you trying to confirm your own experience or basing this on things you've heard/read?

I find the fan on my 2017 iMac to be noticeably quieter than the Late 2013 iMac that preceded it.
 
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MeValonicAcid

macrumors member
Sep 29, 2008
85
13
Belgium
Comparison => Two 27" iMacs doing the same thing at the same time, next to each other

Idle

iMac 2012 i7 - GTX680M - Fusion Drive:

Right now the fan: 1200 RPM,
cpu temperature: 36 °C
Ambient Temp: 30-31 °C
GPU Diode: 35 °C

iMac 2017 i7 - Radeon 580 - SSD:
Right now the fan: 1200 RPM,
cpu temperature: 45 °C
Ambient Temp: 31°C
GPU Diode:43


Youtube 1080p in chrome browser window

iMac 2012 i7 - GTX680M - Fusion Drive:

Right now the fan: 1200 RPM,
cpu temperature: 48-49 °C
Ambient Temp: 30-31 °C
GPU Diode: 36-38 °C

iMac 2017 i7 - Radeon 580 - SSD:
Right now the fan: 1204 RPM,
cpu temperature: 55-60 °C
Ambient Temp: 31-32 °C
GPU Diode:43-44
 
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Dc2006ster

macrumors regular
Jun 9, 2011
225
58
Alberta, Canada
iMac 27" 2017 3.8 GHz i5 Radeon 580 512GB SSD 24 GB Ram at idel. running Safari

Fan 1203
CPU cores 38 °C
Ambient logic board temp 30°C
Ambient room temp 21°C
 
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nathan_reilly

macrumors member
Apr 2, 2016
97
302
Comparison => Two 27" iMacs doing the same thing at the same time, next to each other

Idle

iMac 2012 i7 - GTX680M - Fusion Drive:

Right now the fan: 1200 RPM,
cpu temperature: 36 °C
Ambient Temp: 30-31 °C
GPU Diode: 35 °C

iMac 2017 i7 - Radeon 580 - SSD:
Right now the fan: 1200 RPM,
cpu temperature: 45 °C
Ambient Temp: 31°C
GPU Diode:43


Youtube 1080p in chrome browser window

iMac 2012 i7 - GTX680M - Fusion Drive:

Right now the fan: 1200 RPM,
cpu temperature: 48-49 °C
Ambient Temp: 30-31 °C
GPU Diode: 36-38 °C

iMac 2017 i7 - Radeon 580 - SSD:
Right now the fan: 1204 RPM,
cpu temperature: 55-60 °C
Ambient Temp: 31-32 °C
GPU Diode:43-44

I'm very intrigued by this. I have a 2011 27" (3.4 quad i7, AMD 6970 2GB) that is certainly aging by now. I'll run these tests if I have a chance because I always thought this machine ran hot - it's cooked the two SSDs I've swapped into it over the years - but maybe the newer ones are worse?? Might have to bite the bullet for the iMac Pro :/
 
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MeValonicAcid

macrumors member
Sep 29, 2008
85
13
Belgium
First impressions in Bootcamp Win10

3D gaming - Star wars battlefront (Settings set to have 50-60 fps)

iMac 2012 i7 - GTX680M - Fusion Drive:

Right now the fan: - to re-test
cpu temperature: - to re-test
GPU : - to re-test

iMac 2017 i7 - Radeon 580 - SSD:
Right now the fan: 1500- 2400 rpm - periodically noisy
cpu temperature: 95-100°C
GPU: 80-85°C
 
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