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Hot GPU - So what?

wndsr

wndsr

wndsr

Soldato
Joined
10 Jun 2013
Posts
3,638
Location
Manchester, UK
I know we all like to think that cooler is better in terms of GPU and CPU temperatures, but what exactly is going to happen to my GPU if it reaches up to say 95 degrees under load?

Short term, long term, will it actually do anything provided it's cooled down again afterwards?
 
I think maybe for some people it's not the direct heat that is an issue, it's the side effects. More fan (GFX) noise and dumping extra heat into the case meaning perhaps even more fan (case) noise to get rid of it.
 
Telecaster said:
I think maybe for some people it's not the direct heat that is an issue, it's the side effects. More fan (GFX) noise and dumping extra heat into the case meaning perhaps even more fan (case) noise to get rid of it.
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+1

But I hate having it passed certion temp as you never know how long before it will clonck out on you.

If it goes over the stated temp most time it will stop the game and return to desktop.
 
wndzr said:
but what exactly is going to happen to my GPU if it reaches up to say 95 degrees under load?
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The latest GPU's are meant to auto Throttle down to a lower core speed so they don't overheat and damage the GPU........
 
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Thanks for the responses guys. I have two 770 cards together and one of them is getting significantly warmer than the other. I'm not sure if this is due to it working harder (although hardware monitor says they are both under the amount of load) or due to the fact it's getting less air due to the card so close beneath.

Either way on BF4 once it reaches its maximum temperature of about 83 degrees is throttles down causing a noticeable stutter for me in game. As I care more about getting a smooth experience, I've upped the maximum temperature to 93 - the highest allowed in MSI Afterburner.

Just want to make sure that I won't be picking exploded GPU out of my case in the next twelve months...
 
LtMatt said:
Sounds you you need a side exhaust fan or two to suck up the heat generating by your gpu's. I assume you have two identical cards dumping their heat inside the case?
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Two exactly the same, aye. I have put on an old fan to try and suck some air out but it isn't ideal at all. I've only got a very small and cluttered case so for Christmas I was planning on getting one of those cool looking Corsair cube cases.

PCeTnVjl.jpg
 
wndzr said:
Two exactly the same, aye. I have put on an old fan to try and suck some air out but it isn't ideal at all. I've only got a very small and cluttered case so for Christmas I was planning on getting one of those cool looking Corsair cube cases.

PCeTnVjl.jpg
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Yep thought as much. If you have two dumpers then you really need a decent side exhaust fan or two to get that hot air out of the case asap. Ideally a 200mm or even better 4x120mm fans. I actually have a couple of Ice-Q blowers so they put most of the heat out the rear of the case. I have 4x120mmm intakes on the side of my case providing them cool air which they suck in, cool the gpu's then dump it out the rear. Before that i had a dumper and i simply switched the fans round the other way to suck out all the heat the gpu dumped in. Side fans can make a big difference on air cooled gpu's.


DdQH0Lj.jpg
 
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That looks really good - would you recommend it over the Corsair 540? I know it doesn't have side fans but was hoping to stick 5 of the Corsair High Performance fans on top and front.
 
wndzr said:
That looks really good - would you recommend it over the Corsair 540? I know it doesn't have side fans but was hoping to stick 5 of the Corsair High Performance fans on top and front.
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I have a Corsair 600T. Its a nice looking case for what it is. Pretty sure there are many better options out there though. I'd definitely get one with ample space for side fans if you have two dumpers. :)
 
Yeah, very little hot air goes out the back of those type of coolers, most stays in your case. However, it's not that much of a problem with decent airflow, and certainly not as much of an issue as some would make out
 
wndzr said:
When you say 'dumpers' - do all GPU's dump air or do different models do different things? Two of these.

http://www.overclockers.co.uk/showproduct.php?prodid=GX-208-MS
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Most of them dump heat in the case. This is not really a problem unless you have more than one gpu. When you have two dumping heat and no easy way to exhaust it then you get the problems you mention.

You can get models which dump 95% of the heat out the rear. These are ideal for multi gpu solutions, but they often come with other drawbacks such as increased noise over dual fan solutions and worse gpu cooling performance.

Blowers don't require side fans usually, but it can still help. Cards that dump heat in the case often benefit from side exhaust fans greatly.


Blower type fans below. Have one fan and an enclosed shroud to ensure most of the heat stays within the card shroud and is exhausted out the rear through the vents.

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05jrl7Q.jpg
 
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