Thermal pad replacement (brand discussion)

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mnewxcv

[H]F Junkie
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This video came out last week going over many different brands of thermal pads and some good info:



I ended up ordering some of the NAB pads for my 3090 FTW3 and sucessfully dropped memory junction temperatures by 14C mining ETH (fan at 100% and open air setup). I read online that the evga ftw3 3090 used 2.25mm pads for the die side and 2mm for the backplate side, and with that, some people ran 2.5mm pads die side and 2mm backside. I decided to do a little testing. As a baseline, I was hitting 100C mem junction temp before changing pads. Then I put 2mm pads front and back, and reduced that to 96C. I then decided to try the 2.5 die side (by adding 0.5mm pads on top of the 2.0) and the card would not even make it to windows. Upon inspection, with 2.5mm of pad on the die side the die did not transfer ANY thermal paste to the cooler; there was 0 contact. Finally, I swapped the 2.0mm pads from the back to the front, and put the 2.0 + 0.5mm pads that were stacked [and now impossible to separate] on the backplate side. This yielded the best result, taking my memory junction temp down to 86C.

Anyone here doing pads have any comments to share on their experiences? I guess particularly with GDDR6X 30 series cards, since they are most likely to throttle if too hot.
 
Hmm I bought some Gelid a few weeks ago. At least they work. I would recommend getting pre-cut however.
 
I am working professionally repairing electronics since 1996.
RTX3080 & RTX3090 they have severe product design flaws, thermal load caused of GPU along other components, this is unreasonable HIGH versus the PCB dimensions.
NVIDIA if this was serious enough, it should announce machine Recall and to refund all consumers.
Thermal pads upgrade this is nothing of importance, it can not solve the REAL problem, as this is too big.
 
I replaced the pads on my 3090FE. Made a big difference with memory temps. I used a combination of Thermalright and Gelid pads because I couldn't get enough of the Thermalright ones at the time. They are comparable.
 
Kiriakos-GR said:
I am working professionally repairing electronics since 1996.
RTX3080 & RTX3090 they have severe product design flaws, thermal load caused of GPU along other components, this is unreasonable HIGH versus the PCB dimensions.
NVIDIA if this was serious enough, it should announce machine Recall and to refund all consumers.
Thermal pads upgrade this is nothing of importance, it can not solve the REAL problem, as this is too big.
Click to expand...
I heard the backplate starts getting abnormally hot when you fix the temp pads, talking about that?

Maybe 3080 super and 3090 super will have fixed some of that design.
 
Lepardi said:
I heard the backplate starts getting abnormally hot when you fix the temp pads, talking about that?

Maybe 3080 super and 3090 super will have fixed some of that design.
Click to expand...

I put a heatsink on it. Literally an old AMD CPU heatsink. Temps are fine now :p.
 
Lepardi said:
I heard the backplate starts getting abnormally hot when you fix the temp pads, talking about that?

Maybe 3080 super and 3090 super will have fixed some of that design.
Click to expand...
the backplate definitely gets hot to the touch. Since most of the backplates are basically flat metal, they absorb the heat but don't have fins to help dissipate it. Maybe something they will improve upon for the next gen.
 
I used Thermalright and Aowits pads on my Gigabyte AORUS 3090. It's been a few months back, I think I used 2mm on the RAM chips and 1.5mm on everything else.
Memory temps dropped from 103c down to 90c, not as good as some other results, but still way better then it was.

To help the backplate dissipate some of the heat I slapped a stock AMD cpu cooler on it at first.
Now I have a 150x70x10 (mm) heatsink on there and fan to help move air across it. Seems to do a pretty decent job.
The fan is a stock one from a very old AMD cooler, and it has a built in temp sensor and will adjust speed on it's own.

1637601051106.png
 
DraginDime said:
Memory temps dropped from 103c down to 90c, not as good as some other results, but still way better then it was.
Click to expand...

Nothing personal here, I got motivated by this picture so to write an respond.
When 50% of heatsink airflow of these RTX 3xxx, this is totally blocked due the motherboard, how this thing can be cooled sufficiently?
This is first NVIDIA work made to survive by a slot shape blower (heatsink & fan), and nothing else.
 
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