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9750 GPU overheating - or is it?

post #1 of 9
6/5/07 at 11:39pm
Thread Starter 
Sager NP9750 with an NVidia GeForce Go 7800 GTX is shutting off whenever 3D games are run for more than 10 or 15 mins.

From running RMClock (to monitor the CPU) and RivaTuner2 (to monitor the GPU) the CPU temps are good (steady at 54C), but the GPU will start at 58C and steadily climb to 83C. When it hits that temp +/- 1-2C the Caps, Num and Scroll Lock lights will blink (indicating overheating) and then shuts down.

I have used compressed air to blow out all the vents and even used a laptop cooling pad. In fact a year ago the side of the case used to get so hot I couldn't even touch it, but now the case doesn't even get hot to the touch before it shuts off.

My question is - should the laptop be shutting off with the GPU at only 83C? That seems a little cool to me. I never took any readings until the problem started and I cant find any referrences for operating tolerances.

Any advice/input appreciated
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post #2 of 9
6/18/07 at 1:57pm
http://www.tacticalgamer.com/hardwar...tml#post709385

Well for starters, that card gets damn toasty in these notebooks, but there are a few solutions to this problem.
I've built a cooling box that my 9750 sits on with 2 120mm fans blowing on the bottom, and 2 80mm fans blowing into the back of the box, works, but i need to make it outa plastic to be sturdier..any way, the card being clocked @ the same clock speed as the desktop version, thats half the reason it stops @ 83c.. thats 181.4f, and to me, thats too damn hot for anyone... theres a reason why you dont go with the intel version of the 9750, they've burned themselves up too damn much :P.
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post #3 of 9
6/20/07 at 1:11am
Ask any 8790 owners if they think 83C is safe. A lot of us burnt up machines at temps less than that. 83C seems ridiculously hot to me. Have you contacted the reseller and asked them what safe operating temps are?
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post #4 of 9
11/18/07 at 7:21pm
I have started having a similar issue to this. Every so often the laptop shuts down due to apparent GPU overheating. Having run rivatuner this seems to occur around hte 80 degree mark although on occasion it has been at far less. 60's - 70's.

I had an issue with the fans being clogged up in this a few months back and the card was running away fine till it 101 then it would throttle back. Seems it has been designed to run at well above 80.

I have tryed applying new cooling paste, cleaning the air vents and even have it sitting on a cooling pad but nothing seems to help. Anyone have any ideas what might be causing this?
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post #5 of 9
11/19/07 at 1:51am
Thread Starter 
Quote:
Originally Posted by Laeus View Post
I have started having a similar issue to this. Every so often the laptop shuts down due to apparent GPU overheating. Having run rivatuner this seems to occur around hte 80 degree mark although on occasion it has been at far less. 60's - 70's. I had an issue with the fans being clogged up in this a few months back and the card was running away fine till it 101 then it would throttle back. Seems it has been designed to run at well above 80. I have tryed applying new cooling paste, cleaning the air vents and even have it sitting on a cooling pad but nothing seems to help. Anyone have any ideas what might be causing this?
Basically you are out of luck. While Sager never told me what the issue really was, some co-workers of mine that deal with high end graphics simulation for the military guessed it could be a bad memory module on the card. Once it gets this unstable (dieing at temps well bellow what it usually did), it is only a matter of time before it dies all together. If you have openend up the Video Card area and applied new paste to the GPU, you have seen the membranes that are on top of the memory modules. Odds are one of those wasnt making good enough contact, or during your previous overheats when the vent was clogged it simply got to hot and developed an "issue" that has gotten progressively worse over time. I wound up RMAing mine (out of warranty) for a new video card. Good luck
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post #6 of 9
11/19/07 at 1:54am
Thread Starter 
p.s.

Cooling pads arent any use at all. Bought a couple and GPU/CPU temps were unaffected by their use. Best thing I found was on these forums - made a stand out of a fed ex box by cutting out the middle and just elevating the laptop with a free flow of air beneath it resulted in a couple of degrees of change. And over extended periods of time where normally the desktop would get dangerously hot (almost burnt myesel) this is no longer an issue.
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post #7 of 9
11/19/07 at 8:25pm
Well an RMA isnt really a feasible option for me as I am living in Ireland. Bought this laptop last year when I was living in Boston.

Does anyone know if it is possible to get a replacement part from Sager? Obviously I would pay for it. There are several cards on Ebay but none are specifically designed to fit in a 9750.
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post #8 of 9
11/21/07 at 11:44am
Seems to me there's a Clevo dealer in UK.
I'm sure you can buy a new video card from Sager or from any reseller.
It would be a shame to put a new one in and immediately fry it...
Make sure you've got all the ventilation cleaned out.
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post #9 of 9
11/21/07 at 7:51pm
Well I have just formatted the whole machine, taken out the card reapplied cooling paste and reseated it.

Going to do some tests and see if its had any affect. I have a feeling it may just be delaying the inevitalbe.

On the ventilation issue. That was a problem I had a few months back and ive been careful to make sure it stays spotless nowadays
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