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why does the 9800GX2 die so often?

post #1 of 17
Thread Starter 
what is actually killing these cards the heat or something else? i am asking because i just bought one it will be here Friday. I want to be ready for the worst.
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post #2 of 17
No idea, I've had one die randomly on me then come back to life a week later. It might partly be the heat, as it's certainly not a cool card in terms of temperature.

As long as you keep it with some airflow over it, it'll be fine. Also, if you remove the shroud, that'll yeild a 5 - 10C temp drop, as it does on the "Sammich" design nVidia cards (GTX295 for example), as the shoud partially blocks the vents on the side.
    
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post #3 of 17
Thread Starter 
Quote:
Originally Posted by SmokinWaffle View Post
No idea, I've had one die randomly on me then come back to life a week later. It might partly be the heat, as it's certainly not a cool card in terms of temperature.

As long as you keep it with some airflow over it, it'll be fine. Also, if you remove the shroud, that'll yeild a 5 - 10C temp drop, as it does on the "Sammich" design nVidia cards (GTX295 for example), as the shoud partially blocks the vents on the side.
what a stupid design, so i theory if i keep my card cool like 50C idle and 75C load it will last a while?
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post #4 of 17
At a guess?

It gets so hot it melts and cracks the solder over time

Which then leads to missing solder joints, which leads to a non functional card?
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post #5 of 17
Quote:
Originally Posted by philhalo66 View Post
what a stupid design, so i theory if i keep my card cool like 50C idle and 75C load it will last a while?
yep, that's well within the spec.
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post #6 of 17
It doesn't block them, just reduces airflow, you can run it with it on and there will be no problem, but it does give a temperature drop. Depends how much you care about looks.

If you keep it under 95C load it shouldn't matter too much, I've had one of my 9800GX2's run at 114C for 6 hours whilst I was out and forgot to touch the fan speed, still works, they are tough cards. I doubt you'll kill it with heat.

Mine ran at 80 - 90C all their life folding.
    
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post #7 of 17
At one time this was extensively covered on tech sites for example here:
http://www.tomshardware.com/news/Nvi...lure,6248.html

Most GPUs, mobile or not manufactured by Nvidia in the 6xxx to 9xxx series were concerned, but the failure rate depends (basically) on how well the GPU is cooled. The idea is a certain solder layer inside the GPU is weakened if the temperature varies too much. On laptop parts and GPUs that get very hot this weakness makes the cards fail after a certain time. To avoid this issue just cool the card real well, use aftermarket cooling if you have to.

*EDIT: yep, keep it under 75°C and it should last much longer than with the default cooling systems that yields over 90°C.
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post #8 of 17
I hear the same thing happens to 8800 gtx's after 3 - 3.5 yrs

mine went pop last month after 3 years good use. Ive since baked it and it now works. Obviously the heat these cards generate weakens the solder connections after long periods of time.
Edited by Chewy - 1/4/11 at 5:59am
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post #9 of 17
well 75C at load can't be that bad... Earlier GPUs get about 90C load while folding and still work.

My GTS 250 gets 76C while folding...
    
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post #10 of 17
Thread Starter 
Quote:
Originally Posted by Fallen Angel -X View Post
At a guess?

It gets so hot it melts and cracks the solder over time

Which then leads to missing solder joints
, which leads to a non functional card?
so it basically goes the way of the xbox 360?

Quote:
Originally Posted by SmokinWaffle View Post
It doesn't block them, just reduces airflow, you can run it with it on and there will be no problem, but it does give a temperature drop. Depends how much you care about looks.

If you keep it under 95C load it shouldn't matter too much, I've had one of my 9800GX2's run at 114C for 6 hours whilst I was out and forgot to touch the fan speed, still works, they are tough cards. I doubt you'll kill it with heat.

Mine ran at 80 - 90C all their life folding.
hmm thats uncomfortably hot for my taste
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