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Helpful Reply3090 (Kingpin & others!) - Get that backside VRAM cool!

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DZelmer
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 01:36:16 (permalink)
A little copper to play with. Going to use alu or plastic for prototypes before we cut in to this stuff! 

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DZelmer
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 01:39:14 (permalink)
will the first image upload here??? Wow this will just not work with me!!!

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menko2
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 03:52:30 (permalink)
The holes from the screws and the other ones at the side of the backplate is better to leave them opened or can I cover with the heatsinks?
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Dabadger84
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 04:16:00 (permalink)
menko2
The holes from the screws and the other ones at the side of the backplate is better to leave them opened or can I cover with the heatsinks?



None of the holes serve any purpose unless you need to take the card apart, covering them (as long as you can remove the heatsinks if you DO need to disassemble the card) is not a big deal.
 
All of mine are covered now, in terms of the 4 mounting holes for the AIO, as well as some of the backplate screw holes.
 
This reminds me I REALLY need to get a solid rubber/plastic pry tool so I can quit using a flat-tip screw driver to pop things off the backplate that don't want to let go. lol
 
Edit: Oh yeah, I heard back from EK, they said they can either send me an LED replacement if I want to replace it myself (which I won't because I don't want to risk compromising the leak-proofness of the block), or they can do an RMA for the block.
I'm asking if they can do advanced RMA & hold my card on file so that I can minimize down time of the loop, we'll see how that goes.  I also dropped in there that I'm planning on spending another $300-$500 in parts with them soon that I've been waiting to order pending the resolution of this issue because I only want to have to take the loop apart 2 more times; once to replace the block, and once for when I'm adding the GPU in to it.
post edited by Dabadger84 - 2021/02/24 04:18:07

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#154
degenerate
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 06:47:44 (permalink)
Anyone know what size screws EVGA uses to secure the Kingpin backplate?


 
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vulcZ
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 06:54:54 (permalink)
Dabadger84
So from an earlier post, when I first did the thermal pads & heatsinks, this is for a single run of Port Royal:
 

So forgive the ambient variance... and the before test was with slightly higher voltage but... HELLO?!? These temps! lol
 


 
And just now, with 70.5F ambient, 2160MHz 1068mV core, +1000 VRAM:
 

 
Safe to say it's working on the areas it's on eh? lol PWR4 & PWR5 should be lower by the time I get done.


WOW! Amazing results! This is extra exciting to me because this is more or less what I intend on doing.
 
One question though, are these improvements/temps with just the heatsinks passively cooled or are these with the fan that I see in some of your pics? I intend on putting a fan on mine, but if i can get this cool passively, with just the heatsinks, then I may skip the fan... (I bought a slim Noctua fan just in case lol).

Heatware: http://www.heatware.com/eval.php?id=6179
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wharrus5
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 10:04:46 (permalink)
Hey guys , I have two 3090 kingpin in SLI and the top card blows on the bottom card and I'm trying to find some way to cool them.
For some reason if I activate sli , i'm getting video output only from the 2nd ( bottom card ) . 
Should I go ahead and order the raspberry pi heatsinks , thermal tape , thermal pads?
Also what kind of fan should I be using?
Thank you
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Dabadger84
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 10:12:51 (permalink)
degenerate
Anyone know what size screws EVGA uses to secure the Kingpin backplate?



Absolutely annoyingly small.  I don't know the technical size, but they are extremely tiny, the thread area on the screw is about the size of 1.0 lead on a pencil, or smaller.  It took me a bit to find an electronics screw driver that was the right size to get them out.
 
vulcZ
 
WOW! Amazing results! This is extra exciting to me because this is more or less what I intend on doing.
 
One question though, are these improvements/temps with just the heatsinks passively cooled or are these with the fan that I see in some of your pics? I intend on putting a fan on mine, but if i can get this cool passively, with just the heatsinks, then I may skip the fan... (I bought a slim Noctua fan just in case lol)



That's with a 120mm fan that is controlled along side the GPU radiator fans (it increases in speed under heavier workload/GPU radiator exhaust temp, it runs at 1000RPM idle)

ModRigs: https://www.modsrigs.com/detail.aspx?BuildID=42891  
Specs:
5950x @ 4.7GHz 1.3V - Asus Crosshair VIII Hero - eVGA 1200W P2 - 4x8GB G.Skill Trident Z Royal Silver @ 3800 CL14
Gigabyte RTX 4090 Gaming OC w/ Core: 2850MHz @ 1000mV, Mem: +1500MHz - Samsung Odyssey G9 49" Super-Ultrawide 240Hz Monitor
 
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wharrus5
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 10:22:31 (permalink)
Dabadger84
degenerate
Anyone know what size screws EVGA uses to secure the Kingpin backplate?



Absolutely annoyingly small.  I don't know the technical size, but they are extremely tiny, the thread area on the screw is about the size of 1.0 lead on a pencil, or smaller.  It took me a bit to find an electronics screw driver that was the right size to get them out.
 
vulcZ
 
WOW! Amazing results! This is extra exciting to me because this is more or less what I intend on doing.
 
One question though, are these improvements/temps with just the heatsinks passively cooled or are these with the fan that I see in some of your pics? I intend on putting a fan on mine, but if i can get this cool passively, with just the heatsinks, then I may skip the fan... (I bought a slim Noctua fan just in case lol)



That's with a 120mm fan that is controlled along side the GPU radiator fans (it increases in speed under heavier workload/GPU radiator exhaust temp, it runs at 1000RPM idle)




Can you please give me amazon links for the black and silver heatsinks you used? I'm about to order some :D
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KickAssCop
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 10:29:10 (permalink)
I ended up ordering this thermal pad.

ARCTIC Thermal Pad 145 x 145 x 1.5 mm ACTPD00006A https://www.amazon.ae/dp/...i_1J8NMPEREJXR5D5QN3G9

And these massive sinks
Cooler Chip Heatsink Cooling Fin Aluminum Heat Sink CPU for Router Amplifier https://www.amazon.ae/dp/...i_S2QB6HQ5GMDE0B4C4CMH

Plan is to pad up the areas under the backplate, throw on the sinks and put a 120 mm fan blowing over.

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Dabadger84
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 10:50:19 (permalink)
wharrus5
Dabadger84
degenerate
Anyone know what size screws EVGA uses to secure the Kingpin backplate?



Absolutely annoyingly small.  I don't know the technical size, but they are extremely tiny, the thread area on the screw is about the size of 1.0 lead on a pencil, or smaller.  It took me a bit to find an electronics screw driver that was the right size to get them out.
 
vulcZ
 
WOW! Amazing results! This is extra exciting to me because this is more or less what I intend on doing.
 
One question though, are these improvements/temps with just the heatsinks passively cooled or are these with the fan that I see in some of your pics? I intend on putting a fan on mine, but if i can get this cool passively, with just the heatsinks, then I may skip the fan... (I bought a slim Noctua fan just in case lol)



That's with a 120mm fan that is controlled along side the GPU radiator fans (it increases in speed under heavier workload/GPU radiator exhaust temp, it runs at 1000RPM idle)




Can you please give me amazon links for the black and silver heatsinks you used? I'm about to order some :D


I'm on mobile at the moment, let me see if I can find the ones I'm using now...
Black large heatsinks: https://www.amazon.com/gp...B07YWL7DFS/?pldnSite=1
Small silver heatsinks with thermal tape pre-attached: https://www.amazon.com/gp/aw/d/B084X4VMP9/

Make sure you get 2mm pads for under the backplate. 1.5 is too think for some areas if you want to do the backside VRM areas.

ModRigs: https://www.modsrigs.com/detail.aspx?BuildID=42891  
Specs:
5950x @ 4.7GHz 1.3V - Asus Crosshair VIII Hero - eVGA 1200W P2 - 4x8GB G.Skill Trident Z Royal Silver @ 3800 CL14
Gigabyte RTX 4090 Gaming OC w/ Core: 2850MHz @ 1000mV, Mem: +1500MHz - Samsung Odyssey G9 49" Super-Ultrawide 240Hz Monitor
 
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menko2
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 11:05:03 (permalink)
Dabadger84
YoU_UoY
Well, then run nanominer for a week and half and pay for your MP5 works backplate cooler. It’s like $200 and I’m getting around $18/day while not gaming/working. Then you won’t have to mess with heat sinks on the back looking wild.



I mean, if this looks wild to you:
 

 
you must've missed what Clovis is doing... lol:
 


Two Hybrid blocks (one on either side of the card) with a custom chiller loop on them ^_^


I guess I took the wrong measurements again. The 20mm tall heatsink doesn't allow me to put a couple think fans because my cpu cooler and the RAMs.

Do you think that 10mm tall heatsinks with fans will be better than 20mm without fans?
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wharrus5
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 11:28:14 (permalink)
Dabadger84
wharrus5
Dabadger84
degenerate
Anyone know what size screws EVGA uses to secure the Kingpin backplate?



Absolutely annoyingly small.  I don't know the technical size, but they are extremely tiny, the thread area on the screw is about the size of 1.0 lead on a pencil, or smaller.  It took me a bit to find an electronics screw driver that was the right size to get them out.
 
vulcZ
 
WOW! Amazing results! This is extra exciting to me because this is more or less what I intend on doing.
 
One question though, are these improvements/temps with just the heatsinks passively cooled or are these with the fan that I see in some of your pics? I intend on putting a fan on mine, but if i can get this cool passively, with just the heatsinks, then I may skip the fan... (I bought a slim Noctua fan just in case lol)



That's with a 120mm fan that is controlled along side the GPU radiator fans (it increases in speed under heavier workload/GPU radiator exhaust temp, it runs at 1000RPM idle)




Can you please give me amazon links for the black and silver heatsinks you used? I'm about to order some :D


I'm on mobile at the moment, let me see if I can find the ones I'm using now...
Black large heatsinks:
Small silver heatsinks with thermal tape pre-attached:

Make sure you get 2mm pads for under the backplate. 1.5 is too think for some areas if you want to do the backside VRM areas.



I wanna do just the VRAM . I was hoping I could do it without removing the backplate.
#163
Dabadger84
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 11:56:21 (permalink)
menko2
I guess I took the wrong measurements again. The 20mm tall heatsink doesn't allow me to put a couple think fans because my cpu cooler and the RAMs.

Do you think that 10mm tall heatsinks with fans will be better than 20mm without fans?


Do you have a case fan anywhere near the backplate?

ModRigs: https://www.modsrigs.com/detail.aspx?BuildID=42891  
Specs:
5950x @ 4.7GHz 1.3V - Asus Crosshair VIII Hero - eVGA 1200W P2 - 4x8GB G.Skill Trident Z Royal Silver @ 3800 CL14
Gigabyte RTX 4090 Gaming OC w/ Core: 2850MHz @ 1000mV, Mem: +1500MHz - Samsung Odyssey G9 49" Super-Ultrawide 240Hz Monitor
 
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Dabadger84
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 11:58:04 (permalink)
wharrus5
I wanna do just the VRAM . I was hoping I could do it without removing the backplate.


The vRAM already has thermal pads on it under the backplate stock on all 3090s from evga I think, so you should be able to just do heatsinks with pads or tape & be good.

ModRigs: https://www.modsrigs.com/detail.aspx?BuildID=42891  
Specs:
5950x @ 4.7GHz 1.3V - Asus Crosshair VIII Hero - eVGA 1200W P2 - 4x8GB G.Skill Trident Z Royal Silver @ 3800 CL14
Gigabyte RTX 4090 Gaming OC w/ Core: 2850MHz @ 1000mV, Mem: +1500MHz - Samsung Odyssey G9 49" Super-Ultrawide 240Hz Monitor
 
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menko2
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 12:14:24 (permalink)
Dabadger84
menko2
I guess I took the wrong measurements again. The 20mm tall heatsink doesn't allow me to put a couple think fans because my cpu cooler and the RAMs.

Do you think that 10mm tall heatsinks with fans will be better than 20mm without fans?


Do you have a case fan anywhere near the backplate?


The fan as you can see is higher even with the 30mm tall heatsinks. The heatsinks don't get airflow from with fan.

My options are either covering almost all the back plate with 20mm without fan or 10mm with 2x 120mm thin fan pushing air to the top.

What do you recommend?

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Clovis559
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 12:35:29 (permalink)
degenerate
Anyone know what size screws EVGA uses to secure the Kingpin backplate?




I believe their M2.5.
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Dabadger84
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 13:13:25 (permalink)
menko2
The fan as you can see is higher even with the 30mm tall heatsinks. The heatsinks don't get airflow from with fan.

My options are either covering almost all the back plate with 20mm without fan or 10mm with 2x 120mm thin fan pushing air to the top.

What do you recommend?



I would do the fans for sure, especially since you have fresh air coming in from the back of the case.

ModRigs: https://www.modsrigs.com/detail.aspx?BuildID=42891  
Specs:
5950x @ 4.7GHz 1.3V - Asus Crosshair VIII Hero - eVGA 1200W P2 - 4x8GB G.Skill Trident Z Royal Silver @ 3800 CL14
Gigabyte RTX 4090 Gaming OC w/ Core: 2850MHz @ 1000mV, Mem: +1500MHz - Samsung Odyssey G9 49" Super-Ultrawide 240Hz Monitor
 
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vulcZ
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 13:41:58 (permalink)
Dabadger84
... Worthy of note, I redid the thermal pad on the back of the GPU die, with a bigger one. Gpu temp hasn't hit 50C yet I don't think. That would be a new low.

I'll post pics of how the heatsinks look now after the test is done.



Quick question. In regards to this comment, do you mean bigger as in larger area, or a thicker thermal pad altogether? Sorry I ask because I plan on using some of your images to make a "guide" (what size pad where, etc) people can use for doing this themselves, using everything you've shared in this thread. With your permission, of course :)

Heatware: http://www.heatware.com/eval.php?id=6179
Ryzen 9 5950X|| Asus ROG Strix X570-E Gaming || EVGA RTX 3090 K|NGP|N || 32GB G Skill 3600 (B-die)

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Dabadger84
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 13:50:50 (permalink)
vulcZ
Dabadger84
... Worthy of note, I redid the thermal pad on the back of the GPU die, with a bigger one. Gpu temp hasn't hit 50C yet I don't think. That would be a new low.

I'll post pics of how the heatsinks look now after the test is done.



Quick question. In regards to this comment, do you mean bigger as in larger area, or a thicker thermal pad altogether? Sorry I ask because I plan on using some of your images to make a "guide" (what size pad where, etc) people can use for doing this themselves, using everything you've shared in this thread. With your permission, of course :)




Same size, just larger area.  I'm going to put together a guide & put it in the first or second post, once I've got everything finalized - I made it so that it's almost the whole area from the edge of the VRAM chip pads onward, it's basically the size of the green box in that image:
 


ModRigs: https://www.modsrigs.com/detail.aspx?BuildID=42891  
Specs:
5950x @ 4.7GHz 1.3V - Asus Crosshair VIII Hero - eVGA 1200W P2 - 4x8GB G.Skill Trident Z Royal Silver @ 3800 CL14
Gigabyte RTX 4090 Gaming OC w/ Core: 2850MHz @ 1000mV, Mem: +1500MHz - Samsung Odyssey G9 49" Super-Ultrawide 240Hz Monitor
 
#170
menko2
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 14:07:21 (permalink)
Dabadger84
menko2
The fan as you can see is higher even with the 30mm tall heatsinks. The heatsinks don't get airflow from with fan.

My options are either covering almost all the back plate with 20mm without fan or 10mm with 2x 120mm thin fan pushing air to the top.

What do you recommend?



I would do the fans for sure, especially since you have fresh air coming in from the back of the case.


Ok I'll do with fans and 10mm tall.

I have two options for this:

1) leaving the double sided stick tape so the heatsinks don't move when I place the fans on top.

2) without stick tape and put a high speed fan siting in the side next to the rear fan blowing into them. My rear fan is intake so air will be moving in the same direction towards the heatsinks.

3) question about the stick tape...does it hurt the heat transfer much?

I have to decide now between this two options because once I take out the stock tape I cannot put it back.
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vulcZ
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 14:09:19 (permalink)
Dabadger84
vulcZ
Dabadger84
... Worthy of note, I redid the thermal pad on the back of the GPU die, with a bigger one. Gpu temp hasn't hit 50C yet I don't think. That would be a new low.

I'll post pics of how the heatsinks look now after the test is done.



Quick question. In regards to this comment, do you mean bigger as in larger area, or a thicker thermal pad altogether? Sorry I ask because I plan on using some of your images to make a "guide" (what size pad where, etc) people can use for doing this themselves, using everything you've shared in this thread. With your permission, of course :)




Same size, just larger area.  I'm going to put together a guide & put it in the first or second post, once I've got everything finalized - I made it so that it's almost the whole area from the edge of the VRAM chip pads onward, it's basically the size of the green box in that image:
 



Awesome, thank you! I'll wait for your guide then :)

Heatware: http://www.heatware.com/eval.php?id=6179
Ryzen 9 5950X|| Asus ROG Strix X570-E Gaming || EVGA RTX 3090 K|NGP|N || 32GB G Skill 3600 (B-die)

#172
Dabadger84
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 14:14:34 (permalink)
menko2
Ok I'll do with fans and 10mm tall.

I have two options for this:

1) leaving the double sided stick tape so the heatsinks don't move when I place the fans on top.

2) without stick tape and put a high speed fan siting in the side next to the rear fan blowing into them. My rear fan is intake so air will be moving in the same direction towards the heatsinks.

3) question about the stick tape...does it hurt the heat transfer much?

I have to decide now between this two options because once I take out the stock tape I cannot put it back.



Is it thermal tape or regular tape?  If it's regular I wouldn't use it, if it's thermal tape, it'll be better, at least in my experience, although someone else had bare heatsinks on their backplate & also saw temperature improvements.  The tape is so thin that the heat can go through it pretty well most of the time.

ModRigs: https://www.modsrigs.com/detail.aspx?BuildID=42891  
Specs:
5950x @ 4.7GHz 1.3V - Asus Crosshair VIII Hero - eVGA 1200W P2 - 4x8GB G.Skill Trident Z Royal Silver @ 3800 CL14
Gigabyte RTX 4090 Gaming OC w/ Core: 2850MHz @ 1000mV, Mem: +1500MHz - Samsung Odyssey G9 49" Super-Ultrawide 240Hz Monitor
 
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rangerscott
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 15:06:32 (permalink)
Thermal tape has the least thermal conductivity.

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#174
Dabadger84
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 15:30:44 (permalink)
rangerscott
Thermal tape has the least thermal conductivity.



This is also very true, keep that in mind - most thermal tape has a "conductivity" of like 1.6W/mK - but I also got some of the best temps I've gotten back when I had ALL taped heatsinks too.  Only now that I've really gotten great coverage with pads & heatsinks have I gotten better temps than I did with thermal taped heatsinks.
 
I redid some stuff, replaced 2 of the VRAM sections of thermal pad under the backplate with 12.6W/mK thermal pads... unfortunately the thing I got of that was only 85 x 45 x 1mm, meaning I had to double stack it for each part of the VRAM I wanted to do... which means the two bigger sets have the old Ayunni stuff on them; The single chip by itself & the 3-chips opposite that have the newer stuff.
 
I'll post pics here shortly.  I also added some 2mm & 1.5mm pads in some areas under the backplate, with a bit more heatsinkage above those new pad areas.  I don't know if those areas produce heat much at all, but I figured I have plenty of 1.5mm left, why not try it.

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Dabadger84
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 16:01:12 (permalink)
Had to shut back down cuz as I was editing the pictures I noticed I made a booboo:
 

 
Do you see it? lol

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vulcZ
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 16:19:21 (permalink)
The little piece of plastic?

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Kaveman42
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 16:23:00 (permalink)
Does removing the back plate to add thermal pads void the warranty?
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Dabadger84
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 16:24:49 (permalink)
vulcZ
The little piece of plastic?


🤣 Luckily I did nothing but edit those photos before seeing it. Took it back apart & got that out, it was intact & undamaged. I was going to run the PR Stress Test after finishing cropping & resizing then I saw that & went "k I need to get that out, finish this testing then go to bed" cuz I shouldn't be making mistakes like that.

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Dabadger84
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Re: 3090 (Kingpin) - Get that backside VRAM cool! Also: Thermal Pad size (backplate side)? 2021/02/24 16:26:33 (permalink)
Kaveman42
Does removing the back plate to add thermal pads void the warranty?


No. They would have to prove you putting thermal pads was the cause of any failure. A lot of people redo the stock pads on any card because stock pads are usually dry garbage. This is as simple as removing the back plate, slapping the pads on, & putting it back on, 9 screws.

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#180
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