Water cooled RTX3080 hot spot temps

[Charbert]

Hi,

I am water cooling a RTX3080 with a EK water cooler and back plate and I noticed that my temps are:

GPU 40-50 ish
Memory 50-60 ish
Hot spot as high as 104

while gaming,

I am wondering what I need to do to bring the hot spot temp down. After a while of gaming my screen turns black even though I know my PC is still on and I am thinking its because of the Hot Spot temp is too high.

Should I take it off and redo my pads? When I originally put them on, I did not think there was any difference but now I read I should be using 1.5 on the GPU side and 2.0 on back plate. But then I notice the memory is not really running hot, so I am not sure?

Thanks

 

[Nebulous]

Hot spot? Did you remove the block and see if you have a correct imprint on the GPU core, VRMs and memory chips?

 

[freakdiablo]

Hot spot? Did you remove the block and see if you have a correct imprint on the GPU core, VRMs and memory chips?

Yeah, some programs started reading one of the sensors as "hot spot" - HWMonitor does it with my 2080. Closest answer I found is it may possibly be the VRM temps, maybe start looking there?

 

[EarthDog]

A hot spot is exactly that...the hottest spot in the gpu die. It's common to see up to 20C difference between the average gpu temps and hot spot. This difference is big. I'd think the block isn't making great contact with a part of the core somewhere....

 

[freakdiablo]

On the GPU die? EVGA did a damn good job on the HSF mount for my card then, don't think I ever saw more than a 5C spread

 

[EarthDog]

Da.

Redirect Notice

Spreads are typically a lot less than 20C, but 20C isn't uncommon. A few to several C is more typical.


EDIT: Test - https://www.tomshardware.com/news/nvidia-hwinfo-hotspot-detection

 

[Nebulous]

Well alrighty. Just checked my 1070 and it's a 10c between gpu core and hotspot. It's been a while since I retimmed tho.

 

[Charbert]

So I need to basically re-seat the block onto the GPU? I am wondering if I used the wrong size thermal pads on that side of block and the pads are keeping it from making a good contact.

Also, yes it is in CPUID HWMonitor that reports the hotspot temp.

 

[Charbert]

I took it apart, cleaned it out and re-applied the pads and thermal grease. Used new CK fluid and my temps are 35-40 for the memory and hot spot. GPU is around 27. Does not go over 40 when gaming, so I think I may have got it working correctly. Waiting on it to settle to fill up the tank more. Pic is from filling and testing for leaks.

Post magically merged: Jan 22, 2022

 

[EarthDog]

Awesome! Glad it was that easy (though taking a Waterboro off a gpu isn't 'easy',, lol.

 

[BugFreak]

Nice looking setup there. Does the tube in the top of the res go out using one of those long tubes inside? If so about how far in does it stick? Thanks.

 

[Charbert]

Nice looking setup there. Does the tube in the top of the res go out using one of those long tubes inside? If so about how far in does it stick? Thanks.

You cannot see it in pic because of the foam. The tube goes into tank about 3 inches.

 

[BugFreak]

From the pics it looks like that is an intake, right? Do you have any problems with it sucking in air or making a little whirlpool?

This type of setup would help reduce some clutter in my new build so any advice or problem doing it like you have?

 

[Charbert]

From the pics it looks like that is an intake, right? Do you have any problems with it sucking in air or making a little whirlpool?

This type of setup would help reduce some clutter in my new build so any advice or problem doing it like you have?

Sorry for late replay. The water is coming back into tank from radiator on that line. I have not had any problems with air as long as you keep the tube below the water level.

 

[BugFreak]

Oh so your loop is running bottom res > gpu > top rad > cpu > side rad > top of res?

 

[Charbert]

Oh so your loop is running bottom res > gpu > top rad > cpu > side rad > top of res?

Yes