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Help - hot iMac

Could anyone tell me why my imac gets so hot when I use it, I've only had it a little while and only recently started using it a lot. Mostly photoshop, lightroom, aperture and for periods of about 4/5 hours at a time. Any advice would be gratefully received, if its usual that they run hot thats ok.

iMac, iOS 6.1.3

Posted on Mar 25, 2013 10:45 AM

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Posted on Mar 25, 2013 10:53 AM

Hot is relative, but it has been my experience that new iMacs run quite cool.


Identifying resource hogs and other tips:


Runaway applications can shorten battery runtime, affect performance, and increase heat and fan activity


Find out what processes, if any, appear to be burdening your Mac.


Run Apple Hardware Test and ensure its exhaust fans are operative.


You must remove the firmware password, if one has been set, before you can use AHT.

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Mar 25, 2013 10:53 AM in response to Trude

Hot is relative, but it has been my experience that new iMacs run quite cool.


Identifying resource hogs and other tips:


Runaway applications can shorten battery runtime, affect performance, and increase heat and fan activity


Find out what processes, if any, appear to be burdening your Mac.


Run Apple Hardware Test and ensure its exhaust fans are operative.


You must remove the firmware password, if one has been set, before you can use AHT.

Mar 25, 2013 6:10 PM in response to Trude

It would be a BIG help to know to which of the four iMac families yours belongs, and the actual Mac OSX verison. Doing "About this Mac" from your Apple menu will show the OSX version and the processor type. The letter will help us figure out which iMac family.


It's important becasue the first iMscs had no fans and latter ones did, so overheating issues are very linked to family (PowerPC G3, PowerPC G4, PowerPC G5, or Intel)

Mar 27, 2013 7:18 AM in response to Trude

I think we first have to determine what you mean by "hot." No one can say anthing without that. And, no need to run the AHT yet.


Get iStat Pro. This is a widget which will display temps and fan speeds, among some other things. Please post a screenshot with temps set to Celsius (Cmd-Shift-4) and use the camera icon above.

Mar 27, 2013 7:30 AM in response to Trude

Don't see any reason your model should be prone to overheating. However, my Mid-2010 iMac 27" felt really hot yesterday. Then I noticed some weekend visitors places a thick stack of CD envelopes under the left side, blocking half the air intakes (on either side of the RAM door). Removing the blockage dropped the temps to normal in minutes. So make sure you haven't stuck anything under the vents


If you are viewing video or playing gfx-intensive games, the computer will heat up. That's normal


Here's an utility I use for temps:


http://bresink.com/osx/TemperatureMonitor.html


I like it better than the iStat widget because it puts the temps in the menubar so your don't have the invoke Dashboard to see the temps.

Mar 27, 2013 7:50 AM in response to Allan Jones

Hi allan


These are the temps but the temp is ok on computer at moment, its only sometimes its as hot as ****: temps now are 15,32 CPU heatsink, 37 CPU A Proximty, 34 Display screen proximity, 36 graphics processor heatsink 1, 37 graphics processor temp diode, 38 main logic board, 34 optical drive, 47 power supply position 2, 45 primary heatsink smart disc, 34

Mar 27, 2013 8:18 AM in response to Trude

Yeah,

Those temps are pretty cool.

Everything is running below 120 degrees F and cooler.

My iMac had been consistently running hotter than this, I was concerned and I took precautions and took matters into my own hands to keep the temps down as much as possible.

Keep an eye on the temps from time to time daily.

If you start noticing temps climbing into the 40-50 degrees C range, you might want to consider installing a manual software fan control app to ramp up the RPMs of the internal fans a bit. You may, also, consider getting a small desktop fan ( I use a very small high speed fan) and let that blow cool air at the back,of my iMac, too!

Mar 27, 2013 1:02 PM in response to Trude

Hi Trude,

That's fairly cool! It's fine. I actualy meant temps that are between 50-60 degrees C or higher.

I feel any temps 120 degrees F and lower is a good, comfortable temperature range.

Any temps that are higher than this and approxh the 130 degrees F range and higher, I would strongly think about taking some extra precautions.

As of right now, I wouldn,t start worrying.

😉l

Help - hot iMac

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