3080FE Repasted/repaded and GPU hotspot temp 100C+

[Faranox]

Repadded the front pads and repasted the die (gelid extreme 1.5mm, kryonaut). Memory temps went down 15 degrees(100c - > 85(still not quite as low as I would have liked)), but my gpu temps have gone up 10 degrees. I've gone back around 6 times now. Using calipers and smushing the pads down I'm pretty sure I have the pads on the memory/vrms as flat as they are needed to not interfer with the die but??? Still my GPU hot-spot temps reach over 100c (I stop game at this point, but they are defo still climbing). I'm doing a very thorough even coating and still reaching these ludacris temps. I know kryonaut usually isn't recommended as a gpu thermal paste for a variety of reasons, but mostly that's due to pump out and other 'over time' issues that a fresh repaste shouldn't have. Hot spot used to hit ~93c, and average used to be up around 81, new hot spot is 100+ and average 85.

 

Again, this indicates bad coverage. I'm tightening each screw one turn at a time, I've flattened the thermal pads, I've repasted multiple times. At this point I'm all out of ideas. Any thoughts or suggestions? Thanks.

 

Currently running 1950mhz 887mV undervolt.

3080 FE from October 2020, if that helps with clearance issue information.

 

Edit: Thanks to everyone helping me out, sorry if I come off as a bit annoyed in a few replies, I've taken my GPU apart 7 times now at this point.
HWinfo SS for reference.
 

[191x7]

Have you used the same thickness pads?

[johnno23]

IF you have the 0.5mm pads at hand try adding some strips to the ones you already have installed.

it could be a little trial an error as too thick also decreases the thermal transfer as they can hinder the mounting pressure.

Just the 0.5mm more or less can have a very large impact on the results.

EDIT : forgot to add that you should not go trying to mush down thermal pads as you can do more harm than good as any depressions might make air gaps and then you thermal transfer goes straight down the crapper.

gently place the pads where needed carefully remove the film and reassemble. in this manner the pressure is evenly distributed.

[Faranox]

7 minutes ago, 191x7 said:

Have you used the same thickness pads?

Maybe? I measured the old ones to be around or just under 1.5mm with a digital caliper. I've flattened all the VRAM pads to 1.45mm now. VRM pads are a bit thinner at 1.2mm, originally measured at 1.2mm.

[Faranox]

4 minutes ago, johnno23 said:

IF you have the 0.5mm pads at hand try adding some strips to the ones you already have installed.

it could be a little trial an error as too thick also decreases the thermal transfer as they can hinder the mounting pressure.

Just the 0.5mm more or less can have a very large impact on the results.

My VRAM temps are fine, making the thermal pads thicker is unlikely to improve die temps. My core hotspot temps are the issue, not the memory.

[Shimejii]

7 minutes ago, johnno23 said:

IF you have the 0.5mm pads at hand try adding some strips to the ones you already have installed.

it could be a little trial an error as too thick also decreases the thermal transfer as they can hinder the mounting pressure.

Just the 0.5mm more or less can have a very large impact on the results.

more like 0.1mm can have significant impacts lol. This is why you dont change Pads if you can. You have to get them EXACTLY right for the cooler, otherwise there will be issues. 

 

Repasting is one thing, albiet its only been 2-3 years, you should have about 2 years before repasting was needed.

 

Its not really about spreading, you should have plenty of thermal paste on the GPU, its the contact itself. Any amount different then what was specced for the cooler and thermal pads will have massive implications for the contact. You can tighten it all you want and it wont change that you put the wrong thickness pads. Yeah its a pain in the ass for sure but you pretty much have to get them exactly right.

[johnno23]

exactly and i had a simliar issue on my MSI rtx 3080 Suprim. opened up again added an extra 0.5mm issue solved. at idle my memory HS is onlu 43C under most games 65c and on some games with very high settings etc lots of action and fast moving on screen graphics I hit 80c

 

PS I am also using the Thermalright Extreme Odyssey that compress with ease 

[Faranox]

Just now, johnno23 said:

exactly and i had a simliar issue on my MSI rtx 3080 Suprim. opened up again added an extra 0.5mm issue solved. at idel my memory HS is onlu 43C under most games 65c and on some games with very high settings etc lots of action and fast moving on screen graphics I hit 80c

Was your GPU temp or memory temp the issue? My memory temps are fine, it's the GPU that's having issues. I might be completely missing something here, but I don't understand why adding thermal pads would improve GPU temp issues.

[Faranox]

8 minutes ago, Shimejii said:

Any amount different then what was specced for the cooler and thermal pads will have massive implications for the contact. You can tighten it all you want and it wont change that you put the wrong thickness pads. Yeah its a pain in the ass for sure but you pretty much have to get them exactly right.

I was under the impression that too thin thermal pads = bad VRAM temps, good GPU temps, too thick thermal pads = good VRAM temps, bad GPU temps (as a result of the thermal pads not allowing proper die contact). If I'm mistaken here feel free to correct me.

[johnno23]

I am referring to the memory hotspot temps as they are the hottest and most vunerable aspenct of the cards. 105c and the memory begins to degrade reducing performance and causing unfixable damage to the chips.

pads do not effect the GPU die unless they are too thick and do not compress well preventing a good even contact with the die paste and cooling block.

 

[Faranox]

1 minute ago, johnno23 said:

I am referring to the memory hotspot temps as they are the hottest and most vunerable aspenct of the cards. 105c and the memory begins to degrade reducing performance and causing unfixable damage to the chips.

pads do not effect the GPU die unless they are too thick and do not compress well preventing a good even contact with the die paste and cooling block

My memory hotspot temps are fine (85c max). My issue is the GPU die hotspot temps.

[johnno23]

3 minutes ago, Faranox said:

I was under the impression that too thin thermal pads = bad VRAM temps, too thick thermal pads = bad GPU temps (as a result of the thermal pads not allowing proper contact). If I'm mistaken here feel free to correct me.

your impression is basically correct but there is also a huge difference in the quality of thermal pads. some are soft and spongy others are hard and difficult to compress.

[Faranox]

Just now, johnno23 said:

your impression is basically correct but there is also a huge difference in the quality of thermal pads. some are soft and spongy others are hard and difficult to compress.

I purchased an applied Gelid Extreme pads, which from my understanding is what is mostly recommended, as they are a bit more spongy than most other pads. They still seem to a bit harder to compress evenly when compared to the original pads.

[johnno23]

1 minute ago, Faranox said:

My memory hotspot temps are fine (85c max). My issue is the GPU die hotspot temps.

Are you using HWinfo64 to do the sensor reading ? memory HS at 85c is pretty dammed good so unless your GPU has atrocious paste application or bad paste no way should its temps get hotter than the memory HS

[Faranox]

1 minute ago, johnno23 said:

Are you using HWinfo64 to do the sensor reading ? memory HS at 85c is pretty dammed good so unless your GPU has atrocious paste application or bad paste no way should its temps get hotter than the memory HS

Whatever this means

[johnno23]

1 minute ago, Faranox said:

Gelid Extreme pads

those should be fine. basic method for pads is check if they have a specific up and down side.....not asll do but some have a smooth film one side and dimpled film the other side. place the correct thickness over the memory after removing the bottom film and gently in one swiped with a finger gentle pressure just to adhere them to the chips. then with tweezers carefully remove the top film and if need gently hold the pad with a finger to prevent the pad lifting and trapping any air as you remove the top film then reassemble. I am sure you checked these things but i mention it case other people read and do not pay attention.

[Faranox]

1 minute ago, johnno23 said:

I am sure you checked these things but i mention it case other people read and do not pay attention.

Yep, but I appreciate you making sure.

[johnno23]

 

you are overheating below are my temps

[Faranox]

Just now, johnno23 said:

 

you are overheating below are my temps

 

 hmm, fuck, and thanks - be back in 15 min after I adjust some pads

[johnno23]

Can I ask where you purchased the thermal pads ?

my thermalright came with an authentification sticker and a barcode that can be scanned to check online before I even open the package.

I ask as it is well known that 90% of all thermal pads are made in china and there are many copy - false products in circulation.

[Faranox]

10 minutes ago, johnno23 said:

Can I ask where you purchased the thermal pads ?

my thermalright came with an authentification sticker and a barcode that can be scanned to check online before I even open the package.

I ask as it is well known that 90% of all thermal pads are made in china and there are many copy - false products in circulation.

Amazon, also yea my pads also came with code.

[johnno23]

ok thats good to know.

I am hoping you bought some of those 10cm x 10cm pads that you cut to size. also hope you have different thicknesses.

on my 3080 from MSI I had a couple of pads that were 2mm and also with trial and error discovered that those pads when I added the 0.5mm to them made a world of difference. Online for pad replacements early on with the 30 series I found a site where they mention that using a pads 0.5mm thicker can have a benefit on some cards.

My card certainly had a benefit

[johnno23]

USE this site to see if your card is listed I found it to be quite helpful even though it is from a while back. Just search the data base

https://thermalpad.eu/thermal-pad-sizes/msi-geforce-rtx-3080-suprim-x-10gb/#:~:text=MSI – GeForce RTX™ 3080 SUPRIM X 10GB,to cover all those surface on the side.

 

EDIT- found your card but you might already have this info. anyways if it helps here is the thermal pad link

also from the page I found this info

Required thicknesses changed somewhere in 2021.

Seems like older series of the 3080 FE fits well with 2mm on the front and 3mm on the back. However some of the newer series uses a bit thinner gaps where 1.5mm works better on the front and 2.5mm or 3mm on the back.

https://thermalpad.eu/thermal-pad-sizes/nvidia-geforce-rtx-3080-founders-edition/

[Faranox]

9 minutes ago, johnno23 said:

USE this site to see if your card is listed I found it to be quite helpful even though it is from a while back. Just search the data base

https://thermalpad.eu/thermal-pad-sizes/msi-geforce-rtx-3080-suprim-x-10gb/#:~:text=MSI – GeForce RTX™ 3080 SUPRIM X 10GB,to cover all those surface on the side.

Oops I'm dumb. Either way, FE has issues with pad thickness consistency. Anywhere between 1.5 and 2mm reported. Just search 3080 fe repad

[johnno23]

6 minutes ago, Faranox said:

I have FE not suprim X

check my post again. I added more info