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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Hardware Hacking > IBook GPU Temp Question (Screen Spanning Doctor)

IBook GPU Temp Question (Screen Spanning Doctor)
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Fresh-Faced Recruit
Join Date: Jan 2006
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Jan 27, 2006, 07:19 PM
 
Hey guys...


I have just purchased an Acer 1916Ws Monitor. It is a 19" widescreen screen running up to 1440 * 900.


I installed the screen spanning doctor on my IBook G4 1.33 (with extra 512mb ram) and everything runs fine.

The doctor lets me span the monitor at 1440*900 with no problems, but i have a little worry about the GPU temp...

I stuck a DVD on the external monitor in full screen and i ended up chickening out of watching it once the temp on the GPU got to 66 degrees Celsius / 150 degree far.

How high can the GPU temp on the IBook go before it becomes dangerous for the GPU??? Also, just running it at 1440*900 with nothing going on the screen the temp is sat around 60-63 celsius / 140 - 145 fahrenheit...

Is this resolution pushing the IBook too much do you think or is it safe for the GPU to get hotter without damage?

I would like to be in the position to watch films on the external monitor without having to worry about it... I tried lowering the external monitor to 1024*768 but it still ran in the 60's


Would mirroring the display help with this situation or would the IBook still be doing a lot of work?

Can anyone tell me there IBook G4 GPU temps when they run DVD's

thanks all,

edd robinson.
     
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Jan 28, 2006, 06:03 PM
 
My GPU temp and processor temps get the hottest and I don't like when they are over 130 degrees F. I think the proc is actually damaged at 167 F but I am not positive about that figure. Have you tried elevating the ibook and positioning it so that there is max airflow underneath it? The little rubber feet aren't just there so it doesn't slide and get scratched, they lift it up and you can help it by lifting it even more.
ATT iPhone 4; 13" MBP; MDD G4.
http://twitter.com/SSharon27
     
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Jan 28, 2006, 07:51 PM
 
I think that number is pretty acurate, I heard GPU's getting damaged at about 170 Degrees Faraieheit, so just about the same.....
     
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Jan 29, 2006, 02:13 AM
 
how hot is it when only running one display?
     
e-dard  (op)
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Jan 29, 2006, 01:03 PM
 
Hey Guys,


it seems a lot better now just running it externally @ 1440*900 have been doing it all day and it gets up to about 50C when i am maybe running some flash on websites or whatever, it's just the DVD's that increase the temp which is fair enough as it's having to more work...

Does anyone have any advice for what to do about films? if i run it in mirror mode is the GPU still having to do twice as much work even though it's only a mirror??

Also, considering the iBook allows mirroring as standard then it should be able to run a DVD in mirror mode without problems right??

The reason i said it was running hot normally (ie not watching film - say just browsing or whatever) in 1440*900 extended was because it was still hot from the film i think as it's fine now....


So i guess the question remains, has anyone who spans a monitor on an iBook managed to watch films on the external without problems, and if they have, has it been in mirror mode (1024*768) or at a higher res in extended mode?

cheers all,

edd

oh, and this monitor is very awsome! The space is a godsend for programming!
     
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Jan 31, 2006, 01:03 AM
 
I've got a similiar 1.33 14" like you. I first started spanning to a 19" at 1600x1200 about four months ago or so. I used to monitor the temp religiously but lately I haven't worried about them. I've played Halo for extended periods of time on the larger monitor with no problem. I'll play a DVD for a bit to see what happens.
     
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Jan 31, 2006, 01:24 AM
 
Alright, I played a Family guy DVD at 1600x1200 for about 20 minutes and it topped out at about 146F, 63-64C.
     
e-dard  (op)
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Jan 31, 2006, 07:07 AM
 
yeah same sort of temp as me but i had sin city on for an hour and it climed to 66...


will push it when i get time and see if it reaches 68-69 but i wont want it going any higher, even if it does get that high i wont run another film on it as it may be doing damage...


maybe the bigger case in the 14" is giving slightly better airflow??? Mind you, you are pushing more pixels than me so there has got to be something different???

Graphics card?? - does your have radeon 9000??


maybe it pushes less heat than the 9550??

edd
     
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Jan 31, 2006, 09:32 AM
 
It's the Mobility 9200. It is possible that it could have gotten higher if I was playing it longer, but I've got a test today and I didn't want to be distracted for too much longer.
     
   
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