How hot does your iMac run?

R

RogWarham

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Roger
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Recently put in a 27" i7 (replacing an old G5 PowerMac Big Grey Box)

Just happened to put my hand on top of it earlier - strewth its hot! Is this 'normal'?

Fans were not going, I had just been building quite a complex layered Photoshop file so fairly pressor heavy stuff.

Rog
 
Yep, they run hot. The main heat exchange is by convection, not the fan, so they run quiter. It can get hot enough to burn if you leave your hand on there long enough.
 
mine can run warmish in the day time, but never hot enough to burn my hand, however the most processor intensive thing i do is video encoding and photoshop'in.

If you are worried then theres an app called istat nano give you all the info you need temp wise and other bits too.

istatnano.jpg
 
My MacBook gets surprisingly hot when doing editing and sadly it drains the battery a lot more than i thought :(

I have used iMac's before when doing some editing and they do get very hot indeed.
 
Mines warm but not frighteningly so. I can put my hand on it and leave it there.

Just out of interest I've just put a probe thermometer
on the top and I've got 42 C
 
Mine has been on all day and is only warm to the touch.
 
My MBP 13 does get a tad hot, but nowhere near as bad as my mate Microsoft, heck I had that on my lap and it gets so hot you have to move it.
 
Ok - so sounds like these critters can run quite hot - the good side it saves on heating the studio abit . . .
Just installed this - http://www.bresink.com/osx/TemperatureMonitor.html Just to give an idea of what is cooking . . . Be interesting to see over the next few days! Was certainly flipping hot earlier (Top left hand side).

Nice machine though - was open minded about having the SSD - but it is certainly QUICK at opening things! Time Machine hates the whole computer though - just locks everything up - Guess a call to a Apple is needed when I can summon up the strength to go through their Help Centre . . . :shake:

R
 
My 27" is insanely hot. According to istat the Northbridge can get up to 70 degrees C!
 
My i7 runs fairly warm but not hot enough to burn your hand & it has been on since 6.50am today
 
Since the new iMacs have an aluminium body, the whole computer basically acts like a giant heatsink, so this doesn't surprise me.
 
I am using the i5 27" Dualboot and find it runs consistently hotter in OSX Mode than in Windows 7 Mode,

In CPU intensive work after an hour or so the fan is blowing like steam train and you can burn your hand on top in OSX Mode, running the same apps in WIN7 64bit it runs cool all day,

Not scientific I know but I tend to stick to WIN7 on it now
 
They do get warm to the touch as the whole aluminium case is used as a giant heatsink.

Those fans are running but they are just so darn quite.

As above istat Pro will give you all the info you need

Screen-shot-2010-10-04-at-231426.jpg
 
501cards said:
I am using the i5 27" Dualboot and find it runs consistently hotter in OSX Mode than in Windows 7 Mode,

In CPU intensive work after an hour or so the fan is blowing like steam train and you can burn your hand on top in OSX Mode, running the same apps in WIN7 64bit it runs cool all day,

Not scientific I know but I tend to stick to WIN7 on it now
Click to expand...

That sounds to me like there is something in OS X hogging the CPU. I'd get it checked out (use Activity Monitor) as it wont be doing it any good running so hot like that. Despite what all the fanboys say about certain OSes being more efficient than others, in the grand scheme of things there isn't much difference, and your situation definitely sounds like a cause for concern.
 
trencheel303 said:
That sounds to me like there is something in OS X hogging the CPU. I'd get it checked out (use Activity Monitor) as it wont be doing it any good running so hot like that. Despite what all the fanboys say about certain OSes being more efficient than others, in the grand scheme of things there isn't much difference, and your situation definitely sounds like a cause for concern.
Click to expand...

Cheers, Will have a look at it,

TBH I all but given up on OSX anyway, I bought this machine for the screen, and decided to give OSX a go, especially as it came with a CS5 Licence. But I have found its hard to Beat that lifetime of Windows out of me, and as the rest of my Software is Win Licences I have just gone back to Win7 and stick to running it in that mode. It does everything I need and for the odd time I have something that OSX does better I can drop into that, but will get into it and have a look in Activity Monitor to see what is making it chug!
 
My aluminium iMac gets hot round the top and top of sides, but its on almost permanently and never gets so hot you can't leave your hand there, even when its running CS4, LR and 6 other programs and occasionally objecting about it! :lol:
 
Mine runs hot... having checked on the temperatures and seen how hot it can run, I added a tool to control the fans, and it now runs cooler... I've had issues before with computers when the temperatures have got too high. Not the CPU, but HDD and Memory.
 
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