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Jas0n

macrumors newbie
Original poster
Dec 20, 2007
15
0
I've had my Macbook Pro since December 2007 and only today I've noticed it suddenly getting hot when doing nothing but browsing forums on Safari, smcFanControl said it was up to a shocking 90 degrees Celcius. At first I just ignored it but it happened again just now but this time only went up to 75 degrees Celcius.

Anyone know what's going on?

EDIT: iStat say's it's the GPU Diode getting hot.
 

Eidorian

macrumors Penryn
Mar 23, 2005
29,190
386
Indianapolis
1. Monitor CPU usage under Activity Monitor and make sure All Processes can be seen.
2. Flash, good lord Flash.
3. Reset SMC and PRAM.
 

spinnerlys

Guest
Sep 7, 2008
14,328
7
forlod bygningen
Have you looked at Activity Monitor what process might hog up the CPU/GPU?

Don't forget to show All Processes.

3433908356_932c4b0e97.jpg
 

Makosuke

macrumors 604
Aug 15, 2001
6,661
1,242
The Cool Part of CA, USA
If it happens when randomly browsing the web, it's most likely Flash--pretty much any Flash animation on a page will peg one CPU core at 100% and drive the temperature WAY up. Since Flash ads are everywhere, that's probably it--got so bad I eventually enabled FlashBlock.

I wouldn't expect that to be hitting the GPU nearly as hard as the CPU, though. If the aforementioned suggestion to check Activity Monitor shows your browser at or near 100% CPU, then it's definitely Flash, though.
 
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