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Discussion in 'iMac' started by TC400, Apr 21, 2012.
My iMac is currently at 109F is that normal?
I've got the same 2010 iMac 21.5" and operate in "C" scale.
109 F = 43 C. re: http://www.wbuf.noaa.gov/tempfc.htm
For an internal HDD, 43C is nice and cool. HDD above 60C is getting too hot. 65C is fry range.
Was told that Lion does more background tasks. Thus, it makes iMac internals run slightly hotter.
If wondering, my "average" iMac temps are:
Hey thanks for the reply!
How did you get that is that like a widget or something?
Yes. Free widget called iStats Nano. re: http://www.islayer.com/apps/istatnano/
When displaying its temp panel, I then use "print screen" to save the image.
So I guess my temps are pretty good then?
The Intel processors used in Macs are designed to automatically shut down to prevent damage if they truly overheat. CPU Tjmax = 105C, GPU Tjmax = 100C on i3, i5, i7 processors. (Source: Intel) If you're not already using it, iStat Pro will give you accurate readings of your temps and fan speeds, among other things.
Unless there is a rare defect in a Mac, most temps are well within the normal operating range, considering the workload being put on it. Websites with Flash content, games and other multimedia apps will put higher demand on the CPU/GPU, generating more heat. This is normal. If you're constantly putting high demands on your system, such as gaming or other multimedia tasks, expect temps to rise and fans to spin up accordingly. It's just your Mac doing its job to maintain temps within the normal range.
It is also quite normal for your Mac to become extremely hot to the touch during intensive operations. The aluminum body transfers heat more effectively than other materials used in computer casings, so you will feel the heat more. This doesn't indicate that it's overheating and will not harm the computer to be hot to the touch.
Your fans are always on when your Mac is on, spinning at a minimum of 2000 rpm (for MBPs) or 1800 rpm (for MBAs, MBs and minis). iMacs have 3 fans with minimum speeds in the 800-1200 range. They will spin faster as needed to keep temps at a safe level. If they're spinning up without increased heat, try resetting the SMC. (PRAM/NVRAM has nothing to do with these issues, so resetting it will not help.)
The intake and exhaust vents are in the back of the computer near the hinge on all Mac notebooks. The iMac vent is a slot on the back near the top of the computer. Make sure the vents remain unblocked to allow your computer to perform at its best.
Learn about the fans in your Mac
Apple Portables: Operating temperature
For Flash-related issues:
Find your Flash version and make sure it's the latest version available.
Install ClickToFlash (Safari), Flashblock (Firefox) or FlashBlock (Chrome) to control which Flash content plays on websites.
Use the YouTube HTML5 Video Player to watch YouTube videos, when available. (May impact fullscreen viewing. See link for details.)
Drilling down into provided picture, I see your HDD temp is 52C. Yes. This is a great "C" temp for internal HDD. Temp betwen 45C to 58C is good. 50-55C for internal iMac is perfect.
To help keep iMac internal HDDs slightly cooler, do investigate your iMacs memory usage as well. Less Paging in/out, the less work on its HDD. Less tasks on its HDDs means less internal heat is generated. And, your iMac responds much faster as well (because less disk thrashing as well). If needed, do add more memory inside your iMac. After I installed additional 2 x 4 GBs (keeping factory base of 2 x 2 GBs) to create total 12 GBs RAM, I noticed my iMac ran much better. Thus, slightly cooler insides as well. Suggest minimum 12GBs ram - for general home user tasks. Hope this tip helps as well...
Yeah I added 12 GB too! I have the original sticks and two 4Gb ones.
Spent about $70 bucks on the upgrade! well worth it.