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GPU temp and case type

Mike 702

Mike 702

Mike 702

Associate
Joined
28 May 2019
Posts
489
I recently upgraded to a 3080 GPU.

I have a Corsair 275d case.

The card fits, but there is very little clearance next to the side panel.

It seems to run well, benchmarks are good and performance in games is great.

The question I have is around temps.

It seems to be very hot on the hot spot according to the temps in HWMonitor.

GPU temp gets to about 83 max, but the hot spot reaches 105 max after playing for a bit.

It does not seem to be an issue with the card, performance seems fine - but I do worry about the hotspot temp.

I did some research and it seems some cards can run a very high hotspot temp, but it is not conclusive from my research.

I removed the side panel and after a 2 hour gaming session, the peak temps were 62 on the GPU and 72 on the hot spot - so a lot better.

Is this a matter of me just needing a better case (I suspect it is) or might something else be wrong here?

Appreciate any help.
 
Pics or it didn't happen :p

Seriously though, some pictures of your case and fans, explaining which are intake or exhaust and maybe even your fan settings in BIOS / whatever app you use to control them would be helpful
 
Case looks good, increase air flow. I would use 2*140mm on front, 140mm on back and if you have an AIO mount it on top, if not put 2*140mm at top of case. You will need to set the fans to find a good balance of in vs out.
Edit: was looking at wrong case, cannot find a Corsair 275d case?
 
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FredFlint said:
Case looks good, increase air flow. I would use 2*140mm on front, 140mm on back and if you have an AIO mount it on top, if not put 2*140mm at top of case. You will need to set the fans to find a good balance of in vs out.
Edit: was looking at wrong case, cannot find a Corsair 275d case?
Click to expand...
This is the case here, sorry I made a mistake with the letter.

www.overclockers.co.uk

Corsair Carbide 275R Mid-Tower Gaming Case - White Tempered Glass (CC-9011133-WW)

Order Corsair Carbide 275R Mid-Tower Gaming Case - White Tempered Glass (CC-9011133-WW) now online and benefit from fast delivery.
www.overclockers.co.uk www.overclockers.co.uk

Here is a pic of the setup. I have 2 intake fans at the front, two exhaust fans on top and one exhaust at the back.

20230114-201257.jpg


I think it might be an issue with my fans, they don't seem to be changing speed at all - looking into that now.
 
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I also have a Corsair case (SPEC-DELTA) and it doesn't have the best airflow performance. I'm thinking of just getting a new case altogether.

Can't see anything wrong with your placement of fans, so do let us know on what you end up doing/deciding to fix this. By the way, have you checked to see if the fans of the GPU is working well?
 
Mike 702 said:
This is the case here, sorry I made a mistake with the letter.

www.overclockers.co.uk

Corsair Carbide 275R Mid-Tower Gaming Case - White Tempered Glass (CC-9011133-WW)

Order Corsair Carbide 275R Mid-Tower Gaming Case - White Tempered Glass (CC-9011133-WW) now online and benefit from fast delivery.
www.overclockers.co.uk www.overclockers.co.uk

Here is a pic of the setup. I have 2 intake fans at the front, two exhaust fans on top and one exhaust at the back.

20230114-201257.jpg


I think it might be an issue with my fans, they don't seem to be changing speed at all - looking into that now.
Click to expand...

Have you removed the other PCI rear grills around the GPU as well? Are the case fans pwm, check they're set at that and not DC in the bios? Are front fans Def round the correct way!? Silly question but you never know!
 
your supposed intake fans on the front arent doing **** through solid plastic with only those tiny gaps on them and then a dust filter infront of them too
 
Thanks guys, I am a bit confused the whole DC vs PWM, let me do some reading on that now.

I have not removed the other PCI grills no and the fans are blowing air the correct way, I did check.

The GPU fans I turned up to 100% and now the max temp on the hot spot is 93
 
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To me it looks like those fans are all only helping the CPU, and the fans at right angles in such a small space will be just making turbulence. The top 2 fans are blowing outwards correct, so the front one of them is literally stealing air from your CPU cooler? I think it would help moving those (or at least that one) forward and having it as an intake fan, with the CPU cooler fans and the rear case fan in series blowing hot air straight out.

What is in the front of your case? The PSU is under the GPU is it? You basically have no cool air coming in for your GPU and the air for your CPU is turbulent and stealing flow from your cooler. Look at my case for example in my sig (link on the Sunlit Mountain words). I have intake fans in the front of the case at the side (but maybe your case would have them tucked behind the front panel) and intake fans under the GPU. All my fans for the GPU are blowing in the same direction as the GPU fans and the side intake fans supply fresh air which circles over the RAM and out through the CPU cooler. I have an AIO and my case has the room for GPU intake fans underneath but you can still improve the flow through your case by better fan positioning.

P.s. if the front intake fans are hidden behind the front panel, get Noctua Chromax black fans. They have the best airflow per decibel and if they don't need to be RGB they will maximise what those front fan slots could do
 
IceWolf said:
To me it looks like those fans are all only helping the CPU, and the fans at right angles in such a small space will be just making turbulence. The top 2 fans are blowing outwards correct, so the front one of them is literally stealing air from your CPU cooler? I think it would help moving those (or at least that one) forward and having it as an intake fan, with the CPU cooler fans and the rear case fan in series blowing hot air straight out.

What is in the front of your case? The PSU is under the GPU is it? You basically have no cool air coming in for your GPU and the air for your CPU is turbulent and stealing flow from your cooler. Look at my case for example in my sig (link on the Sunlit Mountain words). I have intake fans in the front of the case at the side (but maybe your case would have them tucked behind the front panel) and intake fans under the GPU. All my fans for the GPU are blowing in the same direction as the GPU fans and the side intake fans supply fresh air which circles over the RAM and out through the CPU cooler. I have an AIO and my case has the room for GPU intake fans underneath but you can still improve the flow through your case by better fan positioning.

P.s. if the front intake fans are hidden behind the front panel, get Noctua Chromax black fans. They have the best airflow per decibel and if they don't need to be RGB they will maximise what those front fan slots could do
Click to expand...
Thanks, let me read over this.

I do have two fans at the front, you can see them here on a new picture. They are large Artic fans and have no RGB.

With the fans running full, it seems far better. My BIOS has the fans set at DC, so still need to understand this more.
 
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As I understand DC just runs at a constant speed, what ever setting it's at. Pwm you can set a fan curve that ramps up fan speed the hotter it gets. Should be options in your bios.
 
Ok having checked the case link on OCUK, you can fit 2x 140mm fans in the front or 3x 120mm fans. You need to do this as intake fans. The lowest of these will help your GPU the most as its air comes from underneath.

[Edit: just read your new post. So you have 2x 140mm fans already. Ok. See my point below re: speed control via FanControl. Currently through BIOS they are probably set to only speed up when the CPU gets hot, and therefore leave the poor GPU to burn]


I would personally get rid of the 2 top fans as they are so close to your CPU cooler and just allow heat to passively escape upwards (you could use these 2 in the front for now). Keep the 2x CPU fans and the rear exhaust fan as they are, all blowing in th same direction, they are working well.


Lastly, plug in all your fans with PWM sockets (use 2 or 3 way Y-splitter cables if needed) install FanControl, a free bit of software and use it to identify your fans then set all the front fans to 50-75% speed via PWM, controlled by a mix curve of CPU and GPU temp (Jayz 2 Cents has a nice video explaining how to set this up). They should never go below 50% to keep ambient temps down but will ramp up to 75% when either CPU or GPU goes over 70c for example. The CPU fans and rear fan can likewise be set to a CPU curve based on CPU temp so they ramp up speeds together when the CPU hits 70c. You COULD set your GPU curve here too to be more agressive, but I leave mine to the drivers personally.
 
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IceWolf said:
Ok having checked the case link on OCUK, you can fit 2x 140mm fans in the front or 3x 120mm fans. You need to do this as intake fans. The lowest of these will help your GPU the most as its air comes from underneath.

[Edit: just read your new post. So you have 2x 140mm fans already. Ok. See my point below re: speed control via FanControl. Currently through BIOS they are probably set to only speed up when the CPU gets hot, and therefore leave the poor GPU to burn]


I would personally get rid of the 2 top fans as they are so close to your CPU cooler and just allow heat to passively escape upwards (you could use these 2 in the front for now). Keep the 2x CPU fans and the rear exhaust fan as they are, all blowing in th same direction, they are working well.


Lastly, plug in all your fans with PWM sockets (use 2 or 3 way Y-splitter cables if needed) install FanControl, a free bit of software and use it to identify your fans then set all the front fans to 50-75% speed via PWM, controlled by a mix curve of CPU and GPU temp (Jayz 2 Cents has a nice video explaining how to set this up). They should never go below 50% to keep ambient temps down but will ramp up to 75% when either CPU or GPU goes over 70c for example. The CPU fans and rear fan can likewise be set to a CPU curve based on CPU temp so they ramp up speeds together when the CPU hits 70c. You COULD set your GPU curve here too to be more agressive, but I leave mine to the drivers personally.
Click to expand...
Thanks very much for taking the time to explain, will have a good read over and make some changes.
 
DC does allow fan speed control via BIOS: 12V is 100%, 6V is 50%, 9V is 75% etc...

Unfortunately with the 2x 140mm intake setup, the GPU is only getting the benefit of the lower half of one of those 2 fans. It might actually be better with 3x 120mm so that the extra space at the bottom in front of the GPU is getting more airflow. You could try replaceing the lower 140mm fan temporarily with the 2x RGB 120mm fans from the top and see if that helps.
 
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Personally I cant stand cases with a solid front. I've always found a grill at the front works better than anything with a solid front/side or bottom vents.
 
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the only thing you needed to do was take the plastic front off your case or buy one designed for airflow if you dont like the frontless look
 
Like Alt0153 said, these cases with metal/plastic fronts block a lot of airflow. If your PC is up on a desk then you could remove the front dust filters and vacuum your room more often to help improve air intake.

Is it possible to move the lower front intake 140mm fan any lower down, so that all of it's airflow goes to the GPU? Seeing how little air will reach those fans from the top and bottom inlets, it might be that they have to run at up to 100% fan speed in order to compensate. It will be louder but your GPU will be happier. Depends upon your priorities...

FanControl video guide:
youtu.be

Everyone NEEDS this FREE piece of software... You will thank me!

Learn more about the Corsair XENEON Gaming Monitor at https://www.corsair.com/lm/en/blog/xeneon-gaming-monitorCheck out FanControl for free here! If you like...
youtu.be youtu.be
 
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take off the top 2 fans - they're robbing air from the cpu cooler

test with the side panel off so you get a sense of what's possible

probably need to unblock the front so the intake fans are more effective - comes at the expense of noise
 
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