3080 FE Thermal Pad change: Mem Temps still 100c!! Help!

[Falkentyne]

I've seen quite a few that mentioned gelid extreme 2mm for the die side of the 3080FE.

I'm gonna give this a whirl at somepoint...especially if the pads degrade. My first port of call will be nvidia though.

The 2mm for Gelid extreme rumor probably started by some pleb squishing 1.5mm pads so much when pushing them down that they turned into 1mm pads and no longer made good contact anymore.
I'm 99.9% sure the original Nvidia pads on BOTH 3080 FE and 3090 FE (and Ti FE) are 1.5-1.6mm for VRAM (possibly the right side is slightly thicker than the left, ether that or the compression varies from uneven balance and both are exactly 1.5mm),
and 1.8mm (VRM left) and 2.0mm (VRM right) and probably the exact same for (VRM single) pads.

One look comparing the 3080 FE, 3080 Ti FE and 3090 FE heatsinks with the stock pads and eyeballing the edges seem to confirm this (the amount of compression itself can only be measured with a caliper after the pads are removed)

https://i.imgur.com/nGnXkFT.jpg

https://i.imgur.com/7Qyn50M.jpg

https://i.imgur.com/oVrb1EE.jpg

 

[Skynet5]

Surely using a different pad brand, the thickness would need to be re-evaluated. Not all pads are equal in their compression ability etc etc.

 

[Joxeon]

If your VRAM temps are still high then that would imply your pads are too thin not thick, when I did my 3080 ventus the first time, I used 2mm gelid ultimate on the front and the memory was still high so I disassembled and stacked a 0.5mm pad on top of the 2mm and the temps then dropped almost 30c.

If your struggling to get the correct size or you suspect the heatsink cold plate isn't perfectly flat then you can always use a blob of thermal paste on the top of the pad where the centre of each memory chip would be but make sure to use a soft paste that spreads easily.

 

[Skynet5]

If your VRAM temps are still high then that would imply your pads are too thin not thick, when I did my 3080 ventus the first time, I used 2mm gelid ultimate on the front and the memory was still high so I disassembled and stacked a 0.5mm pad on top of the 2mm and the temps then dropped almost 30c.

Lol another combination to add to the list

At the price of these pads I'm defo not entertaining the job for a while. Hopefully the prices will come down lol.

 

[Rhaos]

Ok so new pads applied and card installed.

Ran a Heaven Benchmark and these are the temps




Mem Junction temps have gone down from 104c which is great

How are the temps for GPU and Hot spot, are these ok or more bad news ?

 

[Twinz]

My first attempt was with pads that did not compress enough so they were effectively too tall after reassembly. My vram temps were awesome, but my GPU temps were terrible. -particularly under load. My testing took less than 60 seconds before I shut it down and resolved to look for softer pads.

I agree that slighty-too-tall pads on the vram should not result in bad vram temps. It should result in bad GPU temps.

 

[Joxeon]

Lol another combination to add to the list

At the price of these pads I'm defo not entertaining the job for a while. Hopefully the prices will come down lol.

Unless your mining then personally I wouldn't bother, if the card fails due to memory temps which is unlikely then just RMA for a replacement.

 

[Falkentyne]

Surely using a different pad brand, the thickness would need to be re-evaluated. Not all pads are equal in their compression ability etc etc.

Everyone I've told on the Nvidia reddit to use 1.5mm pads on the VRAM and 2mm on the VRM's has been very happy with the results.

https://i.imgur.com/ANyLRDm.jpg

https://www.reddit.com/r/nvidia/comments/ppz07q/repaded_3080ti_fe_worse_temps_few_questions/

Unfortunately, almost all of the threads where I helped people have been deleted by the mods or automod whatever. Probably because there were like 10 posts in the last week, almost all deleted now, with people all complaining about the same thing (either black screen+100% fans or 90-100C hotspots).

But the OP in the thread there posted his results after I told him to use the 3090 FE thicknesses (1.5mm RAM and 2mm VRM as below) and was very happy.
https://imgur.com/e0bz9wj

It's up to you guys whether you want to follow the template or not for yourself.
Just remember to NOT push the pads in with your fingers. If they don't stick to the chips with very light pressure, put them on the heatsink and align it properly (remember the warning about the left side VRM pads NOT not overlapping those large square SMD's just to the left of the VRM strip area.

https://i.imgur.com/8jR7hfP.jpg

 

[Joxeon]

Ok so new pads applied and card installed.

Ran a Heaven Benchmark and these are the temps




Mem Junction temps have gone down from 104c which is great

How are the temps for GPU and Hot spot, are these ok or more bad news ?

The GPU core temp looks a bit hot to me, what was the core temp originally and which size pads did you use?

 

[Rhaos]

1.5mm and 2mm on front and 2mm on back applied like in Falkentyne post

https://imgur.com/8jR7hfP

 

[Falkentyne]

1.5mm and 2mm on front and 2mm on back applied like in Falkentyne post

https://imgur.com/8jR7hfP

That looks better than before. What thermal paste did you use? Were these better than stock?
The core temps could be from the paste used. Ampere is a convex core so I found the best results using Thermalright TFX (full spread. The 9 dots is just initial application).

If you have pads left, you can try to see what happens if you put 1.5mm on the VRM's. But multiple people said they did 1.5 (VRAM) and 2mm (VRM) and had good results, like in this picture here. If you get the same temps, then you know it's your paste that is probably too runny (you didn't use MX-4 did you? MX-4 is terrible on convex surfaces, MX-5 is only marginally better. Check this thread on NBR:

There's literally a 10C difference between thick vs runny pastes on imperfect surfaces.
http://forum.notebookreview.com/thr...nd-apply-traditional-and-liquid-metal.806840/

This is a 3080 TI Fe, and the absolute lowest hotspot delta that will register is 8C.
https://i.imgur.com/DThGhRg.png

( https://www.reddit.com/r/nvidia/comments/ppz07q/repaded_3080ti_fe_worse_temps_few_questions/ )

 

[Rhaos]

Hi Falkentyne,

I used Artic MX4 on the GPU. Gelid Ultimate are the pads used.

The mem junction at stock sat at 100c with the gpu at 80-82c.

I must have moved the heatsink when i put the card back down, I guess thats what caused it.

Crap...Ill order up some Thermalright TFX

 

[Falkentyne]

Hi Falkentyne,

I used Artic MX4 on the GPU.

The mem junction at stock sat at 100c with the gpu at 80-82c.

I must have moved the heatsink when i put the card back down, I guess thats what caused it.

Crap...

Ok so your thermal paste results are pretty expected from MX-4. MX-4 isn't better than stock on these cards.
Can you get some better paste? I'm in USA so I can't really help if you're in Europe, but Thermalright TFX is the best paste hands down for Ampere since it's so thick, and I think it's sold by Oneenjoy (or onenjoy I forgot) on a competitor (ocuk doesn't sell it so I don't know how I would get in trouble for that since they aren't competing). Other pastes that do very well are any of the "new" era of thick/but more spreadable than TFX pastes that come from the mega factories from ShenZhen, China, that all look and act the exact same. ALSEYE is one of their main customers and Halzinye I think manufactures some of them (possibly from Nuomi chemical).
These group of pastes all seem to be mostly identical:
SYY-157, Zezzio, FuzeIce Plus, Alseye T9+ Platinum, etc.

Kryonaut Extreme is best used on waterblocks with very high mounting pressure and perfect fits. If you don't get a spread like this, don't use Kryonaut Extreme (this is a 11/10 quality layer of Kryonaut Extreme)
https://i.imgur.com/sz3ctsL.jpg

 

[Skynet5]

Ok so new pads applied and card installed.

Ran a Heaven Benchmark and these are the temps




Mem Junction temps have gone down from 104c which is great

How are the temps for GPU and Hot spot, are these ok or more bad news ?

not good mate. memory is fixed...but gpu is very bad now, you'll be thermal throttling.

mine sits around 68 in heaven.

Keep trying, and keep in mind the cash offer from CeX.

Problem is keeping trying is expensive...these pads are not cheap.

 

[Rhaos]

Im in the UK so no issue getting Thermalright TFX. I'll get some ordered up.

 

[Skynet5]

Im in the UK so no issue getting Thermalright TFX. I'll get some ordered up.

If you threaded the screw? Have you managed to bolt the cold plate down properly?

 

[Joxeon]

Hi Falkentyne,

I used Artic MX4 on the GPU. Gelid Ultimate are the pads used.

The mem junction at stock sat at 100c with the gpu at 80-82c.

I must have moved the heatsink when i put the card back down, I guess thats what caused it.

Crap...Ill order up some Thermalright TFX

If your GPU core was 80-82c to begin with before you even opened the card then you probably have airflow issues inside the case as it should be around 10c lower.

 

[uscool]

Them temps look high for gpu with fans going that fast what kind of case airflow you have as the 3080 does dump good amount of heat , did you find replacement screw ?

With all talk on what pads needed and paste has me paranoid about mine now I used 2mm extreme gelid for die side and 3mm for back but only replaced where the stock pads were located

I also used thermal grizzly kryonaut

With room temp of 26c , running heaven benchmark highest it got was 72c on gpu with vram at 86c, also mined at 100 hash max 82c vram fans at 65% which seems good enough I'll keep an eye out if anything changes might look into it again next time on what most others are having success with and try Thermalright TFX if it makes that much difference

 

[SentineL-X]

As another reference, I'm currently playing COD:WZ (on max graphic settings) with no mods to me 3080 FE
I'm getting the following temps:
GPU: 68
Hot Spot: 82
Mem Junction: 84

This is with a room ambient temp of around 22c.

I was getting avg 106 on mem junction and 100 on hot spot, but changed my 3600XT stock wraith spire cooler for an Artic freezer 2 AIO which has had a MASSIVE difference to the ambient case fan temp, resulting in a drop of around 20c on overage for the card itself. I'm not bothering with any pad mods for the time being given how this has helped...

Sorry to hear your troubles, but hope you sort!

 

[Rhaos]

Yes the screw head was rounded off, but wasn't threaded. Sorry my bad, at the time couldn't think of the correct words for what had happened.

That screw has now been removed and just waiting to get a replacement for it.

Case wise I have the BeQuiet Darkbase 2 intake at front 1 exhaust rear. Using the fans that come with the case