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I just got my first Mac, the 2011 MBP 13".
Helpful Information for Any Mac User by
GGJstudios
I've just started getting it set up and within the first 20-30 minutes of using it the temp shot up to the 70s celsius. This was with me doing nothing more than downloading and installing basic things such as firefox and chrome etc.
Normally Spotlight indexes the HDD, which is CPU intensive and shows up as "mds" in Activity Monitor.
Have a look at that
Activity Monitor (
Applications / Utilities /) and select
All Processes and sort by
CPU to see what the culprit may be.
image below uses sorting by CPU as an example
The bottom was really hot so I shut it down and let it cool off while I did some research.
No need to shut it down, as 70°C is not hot for a CPU, 105°C is hot and if the CPU gets TOO hot, it will shut itself off.
I know about the overapplied paste and I acknowledge this could be my problem which sucks since I'm really not comfortable going into the machine to clean it out myself

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Maybe this can help:
http://www.ifixit.com/Browse/MacBook_Pro
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I'm still not doing anything but web browsing, so I'm concerned that the fans should not have to run this hard.
If web browsing includes Flash (ads, YouTube, Vimeo, ...), then that will get your CPU working, though with the latest version of Flash not as much as it did before. ClickToFlash might help.
Also check what GPU is in use via
http://codykrieger.com/gfxCardStatus.
Can I break the fans (or something else) doing this?
No.
I realize the program may not be needed, I would expect the fans to kick in automatically when needed, but I checked and they never seemed to go about around 2000rpm no matter how hot it got.
How hot did it get? My 2009 MBP's (17") fans run at 2000RPM when at 70°C, they start to kick slowly in at 80-85°C. Sometimes I rev them up, sometimes I don't.
Do you think this is a thermal paste issue, or something else?
That I don't know. But the steps I showed you to check might point either into this direction or away from it.
Should I keep using smcFanControl since it seems to have stabilized the system?
In what way was your system unstable? A high CPU temperature is not a sign of instability per se.
Anything else I should consider? thanks
The CPUs used in the 15" and 17" have a higher TDP (45W), thus they radiate more heat than their predecessors and run the battery down faster - that's why the battery times Apple shows on its website have gone down.
This should answer most, if not all, of your battery questions:
Apple Notebook Battery FAQ