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3080 Replaced Thermal Pads now low ETH hasrate

So, you replaced thermal pads or did something else?

put the memory to 2800 or more i run 3250, PL to 240 and fan to auto or set autofan (gpu diode 44-45C) i have 104.5mhs with replaced thermopads,

Thanks everyone,

So it seems my rebuild left something to be desired. My cpu temp went way up at first.
After rebuilding these cards one more time, the temp is down but the hashrate is higher, 92MHS, but not the 98 I am used to seeing. I think that my “fixing” these cards caused all of my issues.

Chmmac, I would love for you to PM me. I would like to go over your 3080 settings and your replacement of the thermals. Thanks!!

You might have used incorrect thickness pads. Sometimes if the pads are thicker than the factory you might actually end up creating a little space between the cooler and the actual die of the GPU which could be leading to your issues.
I did the thermal pad mod for my Gigabyte Gaming OC 3080 and now I am sitting at 100mhs at only 90c memory junction temp.
Earlier I used to start throttling at stock settings and never cross 80mhs on my card.

Try to do the thermal mod again but this time check the thickness of your pads and match that to what your card needs.

My Gigabyte needed 2mm pads on the top of memory on the front. I also added thermal pads to the back of the card even though there is no memory there just so I could use the metal backplate as a passive heat sink.

I needed 3mm pads for the back of my card. So again, double check the thickness of your pads

do you have more 3080? what are the normal temperatures for them!? i have 3, with replaced thermopads, i try to keep them under 50c… what are acceptable/safe temperatures?ambient temp is 26-27 (…) i know but its cheapper to replace the fans then the GPU

For the 3080 core temperature does not matter. You need to check mem junction temp and unfortunately that cannot be seen in Linux. I checked my temps while mining in Windows after my mod and then I switched over to HiveOS.

what was +/- the ratio gpu to vram? i don’t even have an Windows comp. :wink:

Without the mod. I wouldn’t even be able to run at stock without throttling.

So core would be around 57-58c and mem junction would be close to 108c at stock.

After the mod core would be 57-58c and mem junction would be at 88c running at absolute clock 1060 for core and 2600 for mem in HiveOS hashing at 100mhs

Ok, thx
I run -200core 2960mem 238w 103,5mhs stabel
Now it gets warmer so i decresed to 2500 mem
But was wondering whaa are acceptable/safe temps (gpu)
Btw, if i set autofan to cpu 45c what it does? It turns on fans first and after it reach 99-100% of the fans them it starts to throttle? Is that correct?

Wow those are nice overclocks but I’d definitely recommend using an absolute clock for nvidia instead of a negative offset.

Autofan keeps your card at the temp you have specified. Fans will eventually go to 100% if the mem starts throttling. Usually autofan only tracks core temp and not mem junction.

Super, thx for all infos! I try with absolut values on 3080 it did not work for me before , i have all 3070 running “absolute”
Thx once more, happy mining especially today ;))

getutsav, i noticed that in ma case with abs 1060 i cant pass 101(no matter the other parametres)
with offs -200 i can go 103 and in cold days 104.

Core 1080 memory 2800 102.4 mh :slight_smile:

It depends on power usage, with an offset you will always use all the power till the PL that you have set for the card (if you set PL of 250W, then the card will use 250W)

With an absolute clock, even if your PL is higher, the card will only use enough power to keep itself at the parameters you set ( I set the PL to 250W but my card only runs at 243W)

See what works best for you, and the best parameter to check is the energy efficiency achieved with your clocks, I run my 3080 somewhere around 410kH/W

Thx for answer👍 I run now 1100c 2980mem and 103mhs, PL240 usage 234, 447Kh/W
im happy with that now! thx

Hi
I have the same isdue with my 3080 gigabyte. I want to buy thermal pads but they are not available in my country easily
Could you tell what brand of thermal pads did you use?

I have gelid! but all are better then original ones!
Mind the exact thicknes, i put 2.5mm(1 and 1,5)on front and 3mm on back

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I got my cards fixed! I used extreme odyssey pads. For my zotac trinity I used 2mm on the back plate, and 1mm for the radiator side. I used thermal grizzly kryonaut paste on the chip. Currently running at 48c using -200 core 2200 memory 240w getting 102.6MH/s. It took me around 4 goes to find the magical combo. Good luck.

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As it it colder here my GB Gaming OC runs now 1460c and 3340mem pl248 - 105.6mhs.
Good luck

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