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Hot!EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES?

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richard203
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/06/11 03:55:28 (permalink)
u should try installing the hybrid cooler i got my 3090 ft3 ultra hybrid cooler few days ago and installed and make a lot of difference. im putting heatsink on top of the gpu backplate, i think ima change out the backplate with better thermal pads.
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Syst3m6
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/06/17 09:02:37 (permalink)
dracore
 
capezio49er
@dracore, what hash rate do you get with that setup?

 
I'm at a stable 121MH/s @ 80% fan and 96deg now.
 






I ordered a hybrid kit for my 3090xc and was getting 127MH/s at 90% fan, 350w and 1650 overclock on the memory at 102c.  I had attached a heatsink on the backplate with thermal tape and had a 120mm fan blowing on it.  I requested the thermal pad sizes from eVGA to see if buying better ones would help, and they just sent me new pads instead.  So Tuesday I replaced the pads and now i'm getting thermal throttling again.  Though they only sent enough pads for the front or backplate, not both. 
 
I bought the thermalright pads and they're arriving today, so hopefully this will reduce my temps again.  I stopped mining after the pad replacement Tuesday.
 
BTW, my 127MH isn't a typo - I thought the card would only do 125, but maybe I have a unicorn or its misreporting.
#32
SearchingBuilds
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/06/17 09:03:54 (permalink)
cool
#33
dracore
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/06/17 09:07:49 (permalink)
Syst3m6
 
I ordered a hybrid kit for my 3090xc and was getting 127MH/s at 90% fan, 350w and 1650 overclock on the memory at 102c.  I had attached a heatsink on the backplate with thermal tape and had a 120mm fan blowing on it.  I requested the thermal pad sizes from eVGA to see if buying better ones would help, and they just sent me new pads instead.  So Tuesday I replaced the pads and now i'm getting thermal throttling again.  Though they only sent enough pads for the front or backplate, not both. 

I bought the thermalright pads and they're arriving today, so hopefully this will reduce my temps again.  I stopped mining after the pad replacement Tuesday.

BTW, my 127MH isn't a typo - I thought the card would only do 125, but maybe I have a unicorn or its misreporting.




I don't have the hybrid kit, but looking at it, what is the difference between that and the stock? Sure it has the pump but that removes heat from the GPU die but that doesn't solve vram temps. Do you get a better backplate and better pads?
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Syst3m6
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/06/17 09:25:42 (permalink)
dracore
 
 
I don't have the hybrid kit, but looking at it, what is the difference between that and the stock? Sure it has the pump but that removes heat from the GPU die but that doesn't solve vram temps. Do you get a better backplate and better pads?




You reuse the existing backplate.  It just replaces the front bezel and new pads.  I don't know what kind of pads they were, there weren't really any markings on them, so probably the same stuff as what they put on the regular cards - most likely not the best stuff.  I didn't monitor my GPU temp before installing, but under a load now, it maxes at like 55c.  I have a large radiator for my CPU in the front of my case with 6 fans (3 pushing and 3 pulling) and the only available space for the hybrid cooler was at the top, and they recommend blowing air through them instead of pulling air in.  For me and my case, this probably works best because there isn't much of an inlet up top to pull, but you're still pushing warm air up through the radiator since heat rises.  
 
The hybrid kit does nothing to help the vram unfortunately.  There is a copper heat spreader that goes over all of the memory and thats what the cooler plate mounts to, but they don't make contact with each other except on the mounting corners.  I think you'd have to get a custom loop done with a water cooled backplate to really do anything different.

I didn't mine until after i got the hybrid cooler.  It was throttling at 115MH/s, but when i bought the heatsink (i think i got the same large black one you did) and the fan, i was holding steady at the 127 and 102c temps.  I also bent my backplate when trying to remove the heatsink the other day. I need to put something heavy on it to flatten it out too.  Hopefully the new pads today will at minimum drop my temps to where they were before i opened it up this week, or hopefully improve on what i had before.  
#35
dracore
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/06/17 09:36:23 (permalink)
Syst3m6
I also bent my backplate when trying to remove the heatsink the other day. I need to put something heavy on it to flatten it out too.  Hopefully the new pads today will at minimum drop my temps to where they were before i opened it up this week, or hopefully improve on what i had before.  


I bent mine too which caused part of the plate to not press against the pads. I noticed this when the temps weren't dropping even as the fans were increasing so it seemed to indicate that there wasn't proper contact somewhere. You should be able to rebend it by hand. The metal is actually quite flexible.  The important part is to make sure the plate is flush or (in my case) slightly bent inwards to press against the pads.
post edited by dracore - 2021/06/17 09:37:25
#36
Syst3m6
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/06/17 09:51:46 (permalink)
dracore
 
I bent mine too which caused part of the plate to not press against the pads. I noticed this when the temps weren't dropping even as the fans were increasing so it seemed to indicate that there wasn't proper contact somewhere. You should be able to rebend it by hand. The metal is actually quite flexible.  The important part is to make sure the plate is flush or (in my case) slightly bent inwards to press against the pads.




yeah, i had attempted to bend mine in the same fashion, but i'm not happy with all of it.  So i'm just going to try and flatten it back out all the way.  I'm hoping amazon gets here sooner than later so i can get this done.  I can still game with it, but its nice making money in the down time :)  Gaming, i never have an issue with temps.
#37
KlNGPlN
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/06/26 12:58:44 (permalink)
Syst3m6
dracore
 
capezio49er
@dracore, what hash rate do you get with that setup?

 
I'm at a stable 121MH/s @ 80% fan and 96deg now.
 






I ordered a hybrid kit for my 3090xc and was getting 127MH/s at 90% fan, 350w and 1650 overclock on the memory at 102c.  I had attached a heatsink on the backplate with thermal tape and had a 120mm fan blowing on it.  I requested the thermal pad sizes from eVGA to see if buying better ones would help, and they just sent me new pads instead.  So Tuesday I replaced the pads and now i'm getting thermal throttling again.  Though they only sent enough pads for the front or backplate, not both. 

I bought the thermalright pads and they're arriving today, so hopefully this will reduce my temps again.  I stopped mining after the pad replacement Tuesday.

BTW, my 127MH isn't a typo - I thought the card would only do 125, but maybe I have a unicorn or its misreporting.


How the hell are you getting 127? I have installed the hybrid kit on mine and I'm hitting 117 @ 100% fan, -400c, +925 memory, and 90%PL with a heatsink on top of the backplate and a 90mm fan blowing air out of it. And I'm still reaching 108c memory junction!! but it's stable.
 
I changed the backside memory with Thermalright 2mm since I read that the pads that come with the hybrid kit are great....looks like I was wrong.
 
what is your setup? what did you change? what are the dimensions of the pads you changed? where did you put them?
#38
Syst3m6
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/06/26 14:56:05 (permalink)
I tried a lot of different settings. The pads I went with are the thermal right ones in the same measurements mentioned above. I added the thermal grease on the same ones too. I replaced the ones on front and back. Forgive me for not being specific but I'm on my phone ATM.

Power is limited to 350w. Memory is over locked to 1650mhz and there is no overclock on the core. Fans are 80%. I have the same large heatsink in the pictures above and I put thermal grease on the heatsink where the heat spreader is on the backplate and where the other memory modules are. It's supposed tightly to the backplate with a 120mm Corsair ML fan. That fan is running 100%. I have other case fans running 100% also to keep fresh air in. My case was designed to be silent so airflow isn't that great.

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Bi2Lmet
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/06/30 04:45:50 (permalink)
So... I order the Thermal pads (lots of them) but I never use them. 
Instead I bought a PCIEX16 Riser and take out the 3090 and the temperature fall down a lot! Now I'm running with 125MH/s with 290w and vram temp at 96°c 
#40
KlNGPlN
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/07/07 05:52:20 (permalink)
Bi2Lmet
So... I order the Thermal pads (lots of them) but I never use them. 
Instead I bought a PCIEX16 Riser and take out the 3090 and the temperature fall down a lot! Now I'm running with 125MH/s with 290w and vram temp at 96°c 


what are your oc settings for getting that high mh with such a low wattage?
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Bi2Lmet
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/07/07 07:01:04 (permalink)
KlNGPlN
Bi2Lmet
So... I order the Thermal pads (lots of them) but I never use them. 
Instead I bought a PCIEX16 Riser and take out the 3090 and the temperature fall down a lot! Now I'm running with 125MH/s with 290w and vram temp at 96°c 


what are your oc settings for getting that high mh with such a low wattage?


I just set it with Nicehash at "Extreme" profile.
It runs between 123-125 but not stable cause Nicehash going up and down.
#42
HexEgg
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/07/19 00:52:21 (permalink)
Bi2Lmet
So... I order the Thermal pads (lots of them) but I never use them. 
Instead I bought a PCIEX16 Riser and take out the 3090 and the temperature fall down a lot! Now I'm running with 125MH/s with 290w and vram temp at 96°c 




What riser did you get? Share a link plz.
#43
lbl88
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/07/20 04:41:41 (permalink)
dracore
New update! Getting better temps by reworking the heatsink+fan mod.
 
From the previous thermal mod I did above I was getting 100deg @ 90% fan, power limit 365W, actual ~300W)
 
During mining overclock power limit 365W, memory 10700
92deg @ 90%fan
94-96deg @ 80% fan
 



@dracore, thank for your info very much, may I know what configuration you run in detail?
I am tried to undervolt, the best I got is only 119MH with 320w @core 1140, mem 10500, volt 712mv, temp of mem is about 104 degree.
However you can get  higher rate with lower power, it looks very nice to me.
I would like to try your setting if possible.
 
#44
KlNGPlN
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/07/28 01:43:06 (permalink)
Trying to find the exact measurements for the thermal pads is insane. Does anyone know the correct measurements?
#45
Jyoussi
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/08/07 20:11:40 (permalink)
don't replace any pads ! there glooed on and will make a mess. take the whole top off so it folds in half like a taco, then paste up the exhaust tubes and paste the pads that touch the different little tubes(squares), and spheres. I coated most of the cylinders and went light on the squares that had open circuit looking dots. cream up the CoreHousing good and as well as the medal exhaust pipes when they touch eachother. I have no temps over 70 and a few side fans to aide air exchange. gets 90 F out here southern heat. Run it with clock up high too at 130 and 500 its a 70Ti, at that OC it seems optimal and not stuck at 99% Output, more like 90-95% and thats nice to know .. 65 celsius average and hot games yay like cyberpunk and red dead daddy on 4k, was visiting a friend and tried 4k, notbad , all the pixels vanished that was aamazing.
#46
alexleo
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/08/25 07:30:42 (permalink)
Has anyone has info on the thermal pad thickness for XC3 RTX 3090? I need to replace the thermal pad as the heat is bad and wish to buy the correct thickness for it. Anyone has successfully repad all of it before and succeed to bring down the heat?
#47
dracore
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/08/25 10:29:19 (permalink)
alexleo
Has anyone has info on the thermal pad thickness for XC3 RTX 3090? I need to replace the thermal pad as the heat is bad and wish to buy the correct thickness for it. Anyone has successfully repad all of it before and succeed to bring down the heat?


Start reading from page 1 and the stuff we had to do to help drop the heat.
#48
dracore
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/08/25 10:31:55 (permalink)
KlNGPlN
Trying to find the exact measurements for the thermal pads is insane. Does anyone know the correct measurements?


It's mentioned on page 1. And also an unofficial caliper measurement of the pads -- but it's not perfect because the pads themselves are squishy and have already been compressed.
#49
alexleo
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/08/25 20:22:37 (permalink)
dracore
alexleo
Has anyone has info on the thermal pad thickness for XC3 RTX 3090? I need to replace the thermal pad as the heat is bad and wish to buy the correct thickness for it. Anyone has successfully repad all of it before and succeed to bring down the heat?


Start reading from page 1 and the stuff we had to do to help drop the heat.




Hi dracore, I actually read the post from page 1, but there are few progress post subsequent to that. So I'm not sure which post actually trial and error, and which post are the the final correct measurement that really able to do the thermal reduction. Sorry if I ask a dumb question, but I'm trying my best to learn. Is the attached picture you posted, is the latest measurement?
 
 

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dracore
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/08/25 20:38:46 (permalink)
alexleo
 
Hi dracore, I actually read the post from page 1, but there are few progress post subsequent to that. So I'm not sure which post actually trial and error, and which post are the the final correct measurement that really able to do the thermal reduction. Sorry if I ask a dumb question, but I'm trying my best to learn. Is the attached picture you posted, is the latest measurement?



Yes, that's an approximation. Since the thermal pads are so soft, these are the measured sizes I found when they have been squished on my card.  I don't have the official thickness values but someone else did post some numbers that evga told them.  Anyways, I took the measured sizes and tried to apply thermal pads closest to the measured sizes + extra thermal paste on top to fill in any gaps.  Evga uses thicknesses that are like multiples of .25mm so you won't be able to find pads that will match the original exactly.
  
post edited by dracore - 2021/08/25 20:42:15
#51
alexleo
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/08/25 20:52:28 (permalink)
dracore
alexleo
 
Hi dracore, I actually read the post from page 1, but there are few progress post subsequent to that. So I'm not sure which post actually trial and error, and which post are the the final correct measurement that really able to do the thermal reduction. Sorry if I ask a dumb question, but I'm trying my best to learn. Is the attached picture you posted, is the latest measurement?



Yes, that's an approximation. Since the thermal pads are so soft, these are the measured sizes I found when they have been squished on my card.  I don't have the official thickness values but someone else did post some numbers that evga told them.  Anyways, I took the measured sizes and tried to apply thermal pads closest to the measured sizes + extra thermal paste on top to fill in any gaps.  Evga uses thicknesses that are like multiples of .25mm so you won't be able to find pads that will match the original exactly.
  


Thank you for your reply dracore. Actually kinda appreciate your mod work. Can I follow the previous 2 picture measurement to work with or do you have any advice. I noticed that the we won't get the exact measurement from reading few references. But I'm hoping to get some reference from you to gain more confident before I start to do major surgery for my card.
#52
dracore
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/08/25 21:16:19 (permalink)
alexleo
dracore
alexleo
 
Hi dracore, I actually read the post from page 1, but there are few progress post subsequent to that. So I'm not sure which post actually trial and error, and which post are the the final correct measurement that really able to do the thermal reduction. Sorry if I ask a dumb question, but I'm trying my best to learn. Is the attached picture you posted, is the latest measurement?



Yes, that's an approximation. Since the thermal pads are so soft, these are the measured sizes I found when they have been squished on my card.  I don't have the official thickness values but someone else did post some numbers that evga told them.  Anyways, I took the measured sizes and tried to apply thermal pads closest to the measured sizes + extra thermal paste on top to fill in any gaps.  Evga uses thicknesses that are like multiples of .25mm so you won't be able to find pads that will match the original exactly.
  


Thank you for your reply dracore. Actually kinda appreciate your mod work. Can I follow the previous 2 picture measurement to work with or do you have any advice. I noticed that the we won't get the exact measurement from reading few references. But I'm hoping to get some reference from you to gain more confident before I start to do major surgery for my card.




Sure, I think these are the final thermal pad sizes i ended up using:
 
Replaced the paste area with 1.0mm
Then the VRM areas with 2.5mm
GPU die memory with 2.0mm
Back-plate memory with 2.0mm
 
#53
alexleo
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/08/25 23:45:51 (permalink)
dracore
alexleo
dracore
alexleo
 
Hi dracore, I actually read the post from page 1, but there are few progress post subsequent to that. So I'm not sure which post actually trial and error, and which post are the the final correct measurement that really able to do the thermal reduction. Sorry if I ask a dumb question, but I'm trying my best to learn. Is the attached picture you posted, is the latest measurement?



Yes, that's an approximation. Since the thermal pads are so soft, these are the measured sizes I found when they have been squished on my card.  I don't have the official thickness values but someone else did post some numbers that evga told them.  Anyways, I took the measured sizes and tried to apply thermal pads closest to the measured sizes + extra thermal paste on top to fill in any gaps.  Evga uses thicknesses that are like multiples of .25mm so you won't be able to find pads that will match the original exactly.
  


Thank you for your reply dracore. Actually kinda appreciate your mod work. Can I follow the previous 2 picture measurement to work with or do you have any advice. I noticed that the we won't get the exact measurement from reading few references. But I'm hoping to get some reference from you to gain more confident before I start to do major surgery for my card.




Sure, I think these are the final thermal pad sizes i ended up using:
 
Replaced the paste area with 1.0mm
Then the VRM areas with 2.5mm
GPU die memory with 2.0mm
Back-plate memory with 2.0mm
 




I trying my best to understand the "area"... so I relabel the whole picture again...Sorry I'm a Visual person. Did I interpret the area size correctly? 

Attached Image(s)

#54
dracore
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/08/29 17:59:52 (permalink)
alexleo
 
I trying my best to understand the "area"... so I relabel the whole picture again...Sorry I'm a Visual person. Did I interpret the area size correctly? 




Looks right
#55
lbl88
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/09/05 07:52:55 (permalink)
Just update my final mod, may help others.

1. replace VRAM pad with 2.0mm on both sides and paste some small copper heatsinks on backplate
result was about 60/100 (core/mem junction) in step 1, just lower about 10 degree than stock setup.

2. remove original backplate, use aluminum heat sink (150*80*15mm) with 2.5 mm thermal pad directly on VRam.
I got 59/90 after step 2 with the same mining setup.

I also add another 9cm fan on backside for take heat out quickly on 1 and 2.

mining argument: core 1140/mem 10700 (+1200)/vcc 718mv/ fan 90% = 122.62 MH/s
room temperature is about 32C, it can be lower if put air conditioner on.
90 is good for me, so just keep it.
#56
ordimans
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/09/09 15:29:25 (permalink)
<p>
lbl88<br />Just update my final mod, may help others.<br /><br />1. replace VRAM pad with 2.0mm on both sides and paste some small copper heatsinks on backplate<br />result was about 60/100 (core/mem junction) in step 1, just lower about 10 degree than stock setup.<br /><br />2. remove original backplate, use aluminum heat sink (150*80*15mm) with 2.5 mm thermal pad directly on VRam.<br />I got 59/90 after step 2 with the same mining setup.<br /><br />I also add another 9cm fan on backside for take heat out quickly on 1 and 2.<br /><br />mining argument: core 1140/mem 10700 (+1200)/vcc 718mv/ fan 90% = 122.62 MH/s<br />room temperature is about 32C, it can be lower if put air conditioner on.<br />90 is good for me, so just keep it.<br />
<br /><br />
What pad did you use ?
I cannot get that. I am at 110 after some minutes on trex wIth Odyssey or Gelid.
i am wrong probably but i don't know where.
 
#57
lbl88
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2021/09/09 18:59:45 (permalink)
ordimans
<p>
lbl88<br />Just update my final mod, may help others.<br /><br />1. replace VRAM pad with 2.0mm on both sides and paste some small copper heatsinks on backplate<br />result was about 60/100 (core/mem junction) in step 1, just lower about 10 degree than stock setup.<br /><br />2. remove original backplate, use aluminum heat sink (150*80*15mm) with 2.5 mm thermal pad directly on VRam.<br />I got 59/90 after step 2 with the same mining setup.<br /><br />I also add another 9cm fan on backside for take heat out quickly on 1 and 2.<br /><br />mining argument: core 1140/mem 10700 (+1200)/vcc 718mv/ fan 90% = 122.62 MH/s<br />room temperature is about 32C, it can be lower if put air conditioner on.<br />90 is good for me, so just keep it.<br />
<br /><br />
What pad did you use ?
I cannot get that. I am at 110 after some minutes on trex wIth Odyssey or Gelid.
i am wrong probably but i don't know where.
 


oops, forgot it.
I've tried pads from 2 vendors, (thermalright odyssey (12.8), T-global's TGX(12)), use TF8 for core.
the Performance between pads is very close in my environment.
What power consumption is your card with T-Rex?
mine is about 313~316W under T-Rex or Gminer.
If yours is close to mine, you may check pads contact with VRam, push slightly after installation for better contact
or as @dracore mentioned earlier, you can put some putty on pads to avoid gap.
 
#58
JayLewis
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Re: EVGA RTX 3090 XC3 ULTRA Thermal PAD SIZES? 2022/07/17 09:28:50 (permalink)

EVGA 3090 XC3

  • Thin (1mm) and wide (10mm) stripes go on the grey power modules where EVGA used thermal putty, on both sides of the GPU die  
  • Thick (2.6-2.8mm) and narrow stripes go on the mosfets, on both sides of the GPU die. The one that is thinner, shorter and narrower goes on the side towards the PCIe power connector. The other stripe goes towards the I/O side.
  • Thinner VRAM pads (2.25mm) go on the front side (i.e. die-side) of the PCB. 
  • Thicker VRAM pads (2.5mm) are now black and go on the back side of the PCB .


    Source: Kritikal pad website
post edited by JayLewis - 2022/07/17 09:38:51
#59
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