What is the Normal Operating temperature on a MACBOOK PRO 2008 Model?

Hi, the normal operating temperature should be around 45-70 Celsius, temp can reach that high (90 Celsius) if doing intensive work, like Rendering movies which generates heat on the Processor and Hard Disk.

If the temp youre seing is constant i would check your computer fans to be working properly.

Regards

The temperatures specified by Apple that you're quoting are for the environment outside the computer, i.e., the room temperature. Temperatures in various places inside the computer are routinely far higher, and the CPU itself (usually the hottest part) is rated by Intel for operation at temperatures up to 105°C. 90°C is well within the safe range. The temperature of your CPU should never go above 105°C. If it reaches 100°C and stays above 100°C with the fans running at full blast (6000 RPM), either your machine has a problem, or the ambient air in your workspace is too warm to let your machine cool itself effectively. In any room where the ambient air temperature is within the Apple-specified range and the computer isn't sitting in the sun, your MBP should be able to keep itself below 100°C.

http://discussions.apple.com/thread.jspa?threadID=716829&tstart=20

should answer your questions. 84 c internal is well within normalcy.
if it was external that temperature, contact Guinness World Book of records.
The worlds highest ambient air temperature was 58 c.

I take it you haven't read my tip.

Apple has not published the internal temperature maxes anywhere for the general public. Thus any attempt to modify the system according to temperature is arbitrary based on many factors that a user has no control over.

In other words, the software that reads that information is based on known sensors without known methods of really interpreting those temperatures and fan speeds. You'll see apparent causal relationships without any idea where in the chain of events the cause exists, if at all. The only known bug that people have mentioned on the board for 10.6.4 is that developers of Steam games have difficulty with OpenGL, and others do too. Obviously Apple optimized OpenGL for other needs, and the authors of Steam and other software have not caught up. If there are any other side effects, they are purely coincidental unless you can prove otherwise. If you cloned back your 10.6.3 backup you made before installing 10.6.4, it is entirely possible that your fan speed would remain the same, and so would your temperature. The going theory is about software is that it can not cause hardware to fail. Apple may have in its operating system commands to increase the fan speed to improve processor performance at particular intervals that it didn't before. Since Apple doesn't publish every single change to an operating system update, anything beyond what is said on the update page is pure speculation.

Your testing, insofar as we've heard anything about it, seems to be unsystematic, unplanned, and uninformed, and consequently without meaning. It's entirely possible that Apple has revised the MBP fan speedup thresholds in recent OS updates without saying anything about it. You aren't going to get any information from Apple about that one way or the other, and your machine is operating well within a safe/normal temperature range. So I think your presumption that high temperatures have something to do with the freezing problem you mention is probably unfounded, and that you'd be wise to focus your investigation into the causes of that problem on some other hypothesis.

This is what you should do:

1. remove any fan control software you installed on your Mac, following the developer's uninstall directions if installed.

2. run the Apple Hardware Test from the disk bundled with your Mac following the link on my aforementioned user tip.

3. If the hardware test is unrevealing, have you overfilled your machine? See my FAQ*

http://www.macmaps.com/diskfull.html

4. if not have you installed any non Apple installed RAM?

5. Are the programs network,graphics, or video intensive?

6. do they require access to certain peripherals?

Identify the source of the problem above. If nothing appears to fit and your data is backed up,
let us know what you have eliminated.


- * links to my pages may give me compensation

One of my friends 2008 model got this problem and apple fixed it by replacing the thermal paste over the CPU because it was drained, but as i said before, in other post, maybe it's a program that consume a lot of memory that you've installed

Message was edited by: thedarkpersian