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What temp is too high for a GPU to run under load?

post #1 of 9
Thread Starter 
So I have two GTX 670s running SLi. Both Gainward Phantoms. And just whilst playing some intensive games, with everything maxed out and running @ 1080p resolution, I've noticed the temps on both of them seem to hover around the 80 degree mark, with my main GPU hitting about 84-86.

I've been told GPUs can run at up to a hundred degrees for prolonged periods without any real hassles, but I just want to be sure. They're both factory OCed, but I havent done anything to them.

Also, if anyone else has the same model of card, are yours as loud as mine when they get up to high temps? Cos they're pretty friggin' loud.
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post #2 of 9
I don't "like" temps over about 85C but you won't hit the thermal shutdown until 100C. I think you're fine - you can try jacking the FAN speeds up to 85-100% and see if you can get temps down, at the expense of a really loud chassis.


I used to have three GTX 680s with factory back plates installed in my rig, and I found the fan speeds to be way too obnoxious to deal with. I ended up pulling the middle GTX out, and temps went down to 80-85C on load with the fans on auto. I set up a custom fan profile in EVGA PrecisionX that would keep both GPUs in the low-mid 70s and the sound was tolerable, but still loud.

Eventually pull them out, and got a single GTX Titan, and it's almost whisper quiet throttled at 80C all day with the fan speed on auto.

Mileage may vary, but I think you're OK. Game with the headset on and the volume up. =)

Greg
post #3 of 9
TBH I wouldn't let my gpu run any hotter than my cpu. thumb.gif It depends on the gpu, but over 80°C @load is going to kill your gpu pretty fast. And yes I've seen my friends kill a lot of gpus that way.

Edit: Forgot to mention that I've had 2 gpus die from heat too.
Edited by Ukkooh - 8/11/13 at 11:30pm
     
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post #4 of 9
Thread Starter 
Nvidia cards underclock themselves once they hit a certain temp though, dont they? So as to prevent it from getting too hot?
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post #5 of 9
Thread Starter 
Also, their website says the maximum safe temp is 97 degrees. So surely 85 is well within safe limits.
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post #6 of 9
Quote:
Originally Posted by Ukkooh View Post

TBH I wouldn't let my gpu run any hotter than my cpu. thumb.gif It depends on the gpu, but over 80°C @load is going to kill your gpu pretty fast. And yes I've seen my friends kill a lot of gpus that way.

Edit: Forgot to mention that I've had 2 gpus die from heat too.

Just...so much wrong here. Obviously you want everything to run as cool as possible, but 80C is standard fare for a GPU. Most can even tolerate the low 90's, but by then you're pushing it. If your friends have killed GPU's, I can guarantee it isn't because they were running at 80-85C. I had a pair of 4870's for years that would run anywhere between 87-91C under load in the summer, and they still work just fine to this day.

So to the OP, 84-86C under load, especially in an SLI configuration, is perfectly normal for reference cards. If you start hitting the 90's, then you might have a problem.
post #7 of 9
Thread Starter 
Quote:
Originally Posted by Flames21891 View Post

Just...so much wrong here. Obviously you want everything to run as cool as possible, but 80C is standard fare for a GPU. Most can even tolerate the low 90's, but by then you're pushing it. If your friends have killed GPU's, I can guarantee it isn't because they were running at 80-85C. I had a pair of 4870's for years that would run anywhere between 87-91C under load in the summer, and they still work just fine to this day.

So to the OP, 84-86C under load, especially in an SLI configuration, is perfectly normal for reference cards. If you start hitting the 90's, then you might have a problem.

I figured as much.

And running my GPUs at the same temps as my CPU would be great, but I hate to think of the cooler Id need to make them run at ~55 degrees under load, lol.
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post #8 of 9
Quote:
Originally Posted by Ragnarok05 View Post

I figured as much.

And running my GPUs at the same temps as my CPU would be great, but I hate to think of the cooler Id need to make them run at ~55 degrees under load, lol.

Haha, yeah. GPU's by nature run hotter than CPU's. Even my single 680 Lightning runs at 69-72C under load, and the heatsink on this thing is a billion times better than any reference card's. Your cards are fine. Just keep an eye on them as time goes by and clean them as necessary.
post #9 of 9
You guys also need to consider other things on the graphics card other than the GPU itself; my 570 reference axial fan version with stock bios runs at around 75C. Most of the time dead graphics card are caused from overheating VRAM/VRM since they usually don't have any kind of thermal shutdown on them. i have noticed my ref 570's VRAM and VRM heatsink run VERY hot, like unable to keep finger on for 1 sec. i have since edited my bios to allow the fan to spin up more when its under load. compared to a near silent but hot running default fan curve.
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