Gigabyte 3080 Thermal Pads are Garbage

TheSlySyl

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Problem for alot of folks is the 30 series cards are already almost comically long, the powerlink puts it off the end of the board instead of behind it.
Even in the example above you couldnt fit a powerlink in that sliver of space, but the 180 degree connectors fit.
Oh yeah, that makes sense. I always go for super, super deep cases.
 

noko

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Bought the nkomax 2mm Thermalright Thermal Pad from Amazon:
Removed the old from backside of the EVGA 3090 XC3 Ultra and installed the new Thermal pads:
Remove.jpg NewPadsInstalled.jpg
My 3090 vram Junction temperature is worst by about 2c. I kept the temperature at or below 100c using MSI Afterburned by locking the GPU frequency and memory speeds. Hashrate prior was around 90mh/s due to this and now to get 100c or less it is around 85mh/s. The original thermal pads made perfect contact and was aligned well with the memory modules etc. The new Thermal pads also makes good, not excessive contact with the backplate. Did not expect a worsening of performance here. Note the backplate has copper heat spreaders on it above. I also bought some heatsinks but due to how close the video card is to the air cooler, I could not install those.

Build.jpg
Looks like I will be getting another Artic Freezer II 280, have one for another machine with a 3900x and it works really good. The above air cooler, NH-D15S barely cools sufficiently the 5800x when mining Monero, maintains less than 90c and that is about it. Plus how close it is to the backplate to the video card is probably not helping those backside 3090 memory modules. Once a better CPU cooler (water cooled), which I have sufficient space on the front side of the case, I should be able to install the heat sinks and get better airflow across the backplate.
 

DPI

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^ That pad mod to the 3090 is a little perplexing, no offense. Doing only the back VRAM modules on a 3090, I'm not surprised TJ temp actually went up.

The backplate is not a heatsink, and most of the benefit from these 2mm pad swaps comes from doing the front VRAM modules since EVGA stock pads don't transfer heat as well as the thermalright pads.

I haven't needed to do a 3090 yet, but if that GPU were mine I would've swapped only front 2mm pads and tested, and then maybe done back modules with low expectations, and then only if I also had actual airflow across the backplate for it to even matter.

3090 is the wrong card for that particular case and CPU cooler setup while also trying to do memory OC intensive mining, and new pads can't perform miracles.
 
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Can you tell me what thermal pad did you use and how many for each. Just got Thermalright 1x1mm 1x2mm 1x3mm but they too small.
 

schizo

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If you have a metal backplate (every 3080 but the MSI) it is, of course, a heatsink, if it makes contact with your card. Question is how much that matters.
 

Niner21

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Have an Aorus 3090 Master here, and after hearing about these issues with ram temps just recently myself I started paying more attention to my cards temps. After a decently long gaming session my memory temps were in the high 70's to around 80C. Just posting this in case anyone had the same card for comparison purposes.
 

noko

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^ That pad mod to the 3090 is a little perplexing, no offense. Doing only the back VRAM modules on a 3090, I'm not surprised TJ temp actually went up.

The backplate is not a heatsink, and most of the benefit from these 2mm pad swaps comes from doing the front VRAM modules since EVGA stock pads don't transfer heat as well as the thermalright pads.

I haven't needed to do a 3090 yet, but if that GPU were mine I would've swapped only front 2mm pads and tested, and then maybe done back modules with low expectations, and then only if I also had actual airflow across the backplate for it to even matter.

3090 is the wrong card for that particular case and CPU cooler setup while also trying to do memory OC intensive mining, and new pads can't perform miracles.
Well the front side of the card has the cooler so my view is the hot vram is on the backside of the card. Anyways the EVGA pads were better than the ones I installed. It is more likely the original was 1.5mm pads while I put thicker ones, 2mm on, which is my thought or the rating of the pads is incorrect. Once I get the CPU water cooler, I will install the heatsinks on the backside for the vram and that will tell clearly if I need to do the front side of the card.
 

Bassman99

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I was on the fence about water-cooling or buying the generic thermal pads, but Im buying them today.
Do I need to put pads on the backplate side as well?
Also what a good thermal paste to use?
 
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DPI

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I was on the fence about water-coo=ing or buying the generic thermal pads, but Im buying them today.
Do I need to put pads on the backplate side as well?
Also what a good thermal paste to use?
Don't bother with backplate side. Just the VRAM pads 2.0mm, and a non-conductive paste for the core (Noctua NH-14). Watercooling not needed.

I now have two of those Gigabyte 3080 Eagles and they're both fantastic after re-pad. Theyre also way easier to take apart and put back together than other AIB brands of 3080s that require a lot of additional steps (TUF 3080 for example is a nightmare to take apart).
 
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Don't bother with backplate side. Just the VRAM pads 2.0mm, and a non-conductive paste for the core (Noctua NH-14). Watercooling not needed.

I now have two of those Gigabyte 3080 Eagles and they're both fantastic after re-pad. Theyre also way easier to take apart and put back together than other AIB brands of 3080s that require a lot of additional steps (TUF 3080 for example is a nightmare to take apart).
Definitely something to keep in mind. Some cards are insanely easy to take apart, only have 8 screws that are easy to get to. Others can be a true pita.
 

Bassman99

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Don't bother with backplate side. Just the VRAM pads 2.0mm, and a non-conductive paste for the core (Noctua NH-14). Watercooling not needed.

I now have two of those Gigabyte 3080 Eagles and they're both fantastic after re-pad. Theyre also way easier to take apart and put back together than other AIB brands of 3080s that require a lot of additional steps (TUF 3080 for example is a nightmare to take apart).
Pads ordered earlier, paste now.
Yeah it didnt look too bad, but my brain isnt as quick as it used to be. Ill take pics to refer back to on reassembly.

EDIT
I cant find that particular Noctua paste.
Is this one good?
https://www.amazon.com/Noctua-NT-H1...mal+paste&qid=1619557546&s=electronics&sr=1-3
 
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DPI

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After working with several more of these Gigabyte cards including the flagship Aorus 3090 Xtremes - that have the same white pads on the VRAM as the basemodel 3080s - it's become obvious why Gigabyte chose these pads: it's not because it was some oversight on their part to use "crap" pads. They were specifically chosen to limit the heat being dumped into block from the VRAM in order to preserve the core's thermal headroom. Particularly on a 3090, the amount of extra heat from VRAM that the core has to contend with if denser thermal pads are used can be significant (6-10C or more).

Gotta remember these GPUs were not designed for mining where VRAM OCd to high hell is the primary concern and the core is secondary. For most GPU applications, the core performance and therefore temp was the primary consideration.

Other AIBs have chosen slightly denser pads for their VRAM. Each company struck their own balance based on various factors. It is what it is.

At least we have the option to tilt the thermal balance one way or the other by changing the pads ourselves, and it only takes a few minutes.
 
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Bassman99

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After working with several more of these Gigabyte cards including the flagship Aorus 3090 Xtremes - that have the same white pads on the VRAM as the basemodel 3080s - it's become obvious why Gigabyte chose these pads: it's not because it was some oversight on their part to use "crap" pads. They were specifically chosen to limit the heat being dumped into block from the VRAM in order to preserve the core's thermal headroom. Particularly on a 3090, the amount of extra heat from VRAM that the core has to contend with if denser thermal pads are used can be significant (6-10C or more).

Gotta remember these GPUs were not designed for mining where VRAM OCd to high hell is the primary concern and the core is secondary. For most GPU applications, the core performance and therefore temp was the primary consideration.

Other AIBs have chosen slightly denser pads for their VRAM. Each company struck their own balance based on various factors. It is what it is.

At least we have the option to tilt the thermal balance one way or the other by changing the pads ourselves, and it only takes a few minutes.
Only can make the gpu HS so big. ESP as more and more want to use SFF cases.
They could offer a 4 slot card for enthusiasts though with enough HS to cool both properly.
The market isnt right for that right now though.

I still havent changed mine and looking at crap temps on 3080
 

somebrains

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I'm thinking longevity isn't so much a design bullet pt in light of current environment.

Would you want 30x0 mined on gpus living 3+ years at screwed up miner dump used prices pulling down the next few gens MSRP?

The gpus were designed for a narrow use case.

Why waste resources supporting scum bags essentially off roading a Prius?
 
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See-Fu

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I started mining on my Gigabyte 3080 Aorus Master in my off hours recently and noticed the fans would hit 100% almost instantly with memory temps at 110C. Gaming thermals were actually decent, 70% fan speed and ~65C on the core. I checked around and it seemed to be a common complaint with all versions of Gigabyte cards with most people adding 3mm thermal pads to the back (there are non on the back of the memory) and 1.5-2mm pads on the front.

I ordered some Thermalright 12.8W/mK pads off Amazon and did the swap tonight and it dropped temps on the memory by 22C!

Stock - 100% Fan, 110C Memory
New Pads - 70% Fan, 88C Memory

I can't believe how much of a difference it makes. It does raise the core temp though as now heat is actually getting through to the heatsink from the memory. I strongly recommend replacing and adding pads if you mine on a Gigabyte card, although check with local RMA policies before doing so.
how much material did you have to buy? the $17 package seems like so little, do you need 2 of those or just 1?
 

BassTek

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how much material did you have to buy? the $17 package seems like so little, do you need 2 of those or just 1?

I ended up using one pack of 3mm for the back and 1 pack of 1.5 mm for the front. 2mm on the front is probably safer though. You should have just enough if you don't make any mistakes.
 

Bassman99

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I ended up using one pack of 3mm for the back and 1 pack of 1.5 mm for the front. 2mm on the front is probably safer though. You should have just enough if you don't make any mistakes.
Is the back necessary?
 

Bassman99

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Not really, some people said adding to the back with stock pads on front only dropped memory 1-2 degrees.
Ill judge by the front pads difference then.
If I drop from 110 to 80 with front pads alone then I wont bother, but if it only drops to 90 then that 1-2 makes a bigger difference.
 

Bassman99

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wow what a difference this makes. dropped 40c on the vram for me and the fans went from 100% to like 45%.
Yeah its night and day difference.
I have he repadded 3080 in the garage and it runs +-30c cooler than it did previously in the house with the AC
 
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