domenicdistefano
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Can someone from EVGA give some details around how the memory chips on the back of the 3090 (for both reference and custom models) is going to be cooled / addressed? Anecdotal information so far seems to indicate a heat pipe type of solution will be in place for the stock cooler but once that is taken off we would theoretically have a gap with only a water block on the front. One would assume that since EVGA is going to sell their own water block this would somehow be addressed. Also of course an ETA would be nice...
Many of us want to try and order some version of the EVGA 3090 on launch day specifically for water cooling but at the moment have very little information to go on.
Thank You
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Delirious
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/12 08:24:05
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There's no ETA at the moment for the HC version. I too am looking to obtain that one.
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domenicdistefano
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/12 08:59:39
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Understood that there is no ETA but more interested in the design considering the 3090 is unique in having the memory chips on back of the PCB. EVGA announced it would be releasing the HC but inquiring minds want to know how they are going to deal with cooling the backside chips.
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Delirious
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/12 09:42:29
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closer to release, you will see some specs. I would think that everything that needs cooling will have it.
"Be quick to listen, slow to speak and slow to anger" Affiliate Code XZUMV9TJW5 Associate Code: 7PM43CU71IB2IAP education may be expensive but wait until you get the bill for ignorance A wise man once said that we can't make anyone feel or do anything. We can throw things into the wind, but it's up to each person to decide how they want to react, where they want to stand when things fall.
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domenicdistefano
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/12 14:09:40
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One follow-up question on this subject regarding EVGA's policy that replacing the factory cooler with an aftermarket waterblock does NOT void the warranty. The FTW3 3090 for instance has a heat pipe on the back connected to a cold plate to cool the GDDR6X chips. If all of this is removed and simply passively cooled with an EKWB water block & backplate for instance would this be considered voiding the warranty?
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hallowen
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/12 14:47:41
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domenicdistefano
One follow-up question on this subject regarding EVGA's policy that replacing the factory cooler with an aftermarket waterblock does NOT void the warranty. The FTW3 3090 for instance has a heat pipe on the back connected to a cold plate to cool the GDDR6X chips. If all of this is removed and simply passively cooled with an EKWB water block & backplate for instance would this be considered voiding the warranty?
+1 I also have asked EKWB this same question, But no reply as of yet.
post edited by hallowen - 2020/09/12 14:50:42
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kram36
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/12 15:59:12
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domenicdistefano
Understood that there is no ETA but more interested in the design considering the 3090 is unique in having the memory chips on back of the PCB. EVGA announced it would be releasing the HC but inquiring minds want to know how they are going to deal with cooling the backside chips.
EVGA will not be using the same PCB as Nvidia is using on the FE cards. EVGA will probably have all the memory chips on the same side of the board.
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domenicdistefano
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/12 16:23:22
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"EVGA will not be using the same PCB as Nvidia is using on the FE cards. EVGA will probably have all the memory chips on the same side of the board."Sound plausible? The FE is a custom design with that wacky cut in half PCB to accommodate their new cooling system so perhaps the extra space on the board with a "normal" design would give more space for the chips? Below is the FE 3080 PCB. Are the memory chips the vertical stack of four on either side of the GPU? If so do you think EVGA could fit (or has the in-house engineering expertise to do so) another eight of these on a single side of a more traditional / larger custom PCB?  
post edited by domenicdistefano - 2020/09/12 16:35:52
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Airikay
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/12 16:55:51
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kram36
EVGA will probably have all the memory chips on the same side of the board.
I don't think so. There really isn't the space for 24 chips. Plus we know the FTW3 has memory chips on the back side. The HC should just be the FTW3 with a waterblock attached.
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kram36
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/12 17:02:43
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domenicdistefano
"EVGA will not be using the same PCB as Nvidia is using on the FE cards. EVGA will probably have all the memory chips on the same side of the board."
Sound plausible? The FE is a custom design with that wacky cut in half PCB to accommodate their new cooling system so perhaps the extra space on the board with a "normal" design would give more space for the chips?
Below is the FE 3080 PCB. Are the memory chips the vertical stack of four on either side of the GPU? If so do you think EVGA could fit (or has the in-house engineering expertise to do so) another eight of these on a single side of a more traditional / larger custom PCB?
"If so do you think EVGA could fit (or has the in-house engineering expertise to do so" Of course EVGA has the in-house engineering expertise to do so, EVGA is the most advanced Nvidia AIB on the planet. Have you not seen a picture of the RTX 3090 Hydro Copper?  https://www.evga.com/arti...geforce-rtx-30-series/
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Airikay
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/12 17:08:29
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domenicdistefano
Below is the FE 3080 PCB. Are the memory chips the vertical stack of four on either side of the GPU? If so do you think EVGA could fit (or has the in-house engineering expertise to do so) another eight of these on a single side of a more traditional / larger custom PCB?
Yeah. 4 on either side, 3 on top and 1 on bottom. That is a 3080 so it only has the 10 chips. Which also means it won't have any chips on the back. The gray things outside(plus the empty whites) are your VRMs. As for the 3090, the 2 empty spots would be filled with memory chips plus there would be 12 on the back. There isn't enough room for 24 chips on one side. They need to be as close to the die as possible. You need them to be close to the die. We already know the FTW3 has 12 on the front and 12 on the back. https://youtu.be/7puH-8aCfBY?t=06m40s
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Spurious_ECG
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/12 17:12:13
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The majority of memory cooling is done at the front of the chips, where they get the hottest. Any rear cooling isn't necessary but is a nice addition.
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kram36
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/12 17:17:39
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Airikay
kram36
EVGA will probably have all the memory chips on the same side of the board.
I don't think so. There really isn't the space for 24 chips. Plus we know the FTW3 has memory chips on the back side. The HC should just be the FTW3 with a waterblock attached.
I didn't realize EVGA had disclosed that information. Guess we'll have to wait until EVGA unveils the RTX 3090 HC.
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Mr.Gisoid
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/12 17:23:20
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The RTX Titan has 24GB on one side only, so it's doable.
post edited by Mr.Gisoid - 2020/09/12 22:50:39
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Airikay
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/12 17:25:51
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Mr.Gisoid
The RTX Titan has 24Gb on one side only, so it's doable.
Titan RTX has 16Gb chiplets.
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Mr.Gisoid
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/12 22:51:52
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Airikay
Mr.Gisoid
The RTX Titan has 24GB on one side only, so it's doable.
Titan RTX has 16Gb chiplets.
What does that mean?
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Airikay
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/12 23:05:58
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Mr.Gisoid
What does that mean?
The capacity of each chip is doubled. It only had 12 memory modules to reach the 24 GB. 16Gb chiplets won't exist for GDDR6X until next year.
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vulcan1978
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/13 00:25:40
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Spurious_ECG
The majority of memory cooling is done at the front of the chips, where they get the hottest. Any rear cooling isn't necessary but is a nice addition.
There are chips on both sides of the PCB, I don't believe cooling only one bank of VRM will allow the heat from the top-side bank of VRAM to convey through the PCB, into the other chips, and then the waterblock. Both banks of VRAM need to be in contact with some kind of heat-sink.
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IMWork87
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/13 04:14:15
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vulcan1978
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/13 08:51:28
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IMWork87
AC had active backplate cooling for the 2080ti / TITAN RTX by a heatpipe directly connected to the acetal terminal.
https://shop.aquacomputer...d=3795&language=en
Yes but that only works with their block and they haven't announced a block for the FTW3 yet. I believe they have stated they are making a block for "reference" and FE.
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domenicdistefano
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/13 08:56:31
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This site is tracking all waterblocks from all vendors updated on a daily basis. Had to include the link in quotes because the forum won't allow the link otherwise for some reason. "https://translate.google.com/translate?sl=de&tl=en&u=https%3A%2F%2Fhardware-helden.de%2Frtx-3000-wasserkuehler-stand-der-dinge%2F"
post edited by domenicdistefano - 2020/09/13 08:59:54
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vulcan1978
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/13 09:08:40
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8700k @ 5.1 GHz - 0 AVX @ 1.386v Dynamic Offset w/ EK Monoblock + Delid | Gigabyte Z370 Aorus Gaming 7 | EVGA 2080 Ti XC2 Ultra @ 2130 Mhz core, 7950 MHz memory @ 1.063v w/ 375W FTW3 vbios + Phanteks Glacier Block | EK CE 420 + EK XE 360 | 2x16GB G-Skill Trident Z Royal 3600 MHz 17-20-20-38 | 2 TB Sabrent Rocket | Corsair RM1000x | Thermaltake View 71 | Alienware AW3418DW + Asus ROG Swift PG278Q (for 3D Vision) on Amazon Basics Arms | Win10 Pro 1809 philosophersbunker.blogspot.com
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irakandjii
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/13 12:30:26
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Thank you for that link it is very useful.
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hallowen
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Re: 3090 Hydro Copper Water Block - Cooling of Backside Memory Chips?
2020/09/15 14:26:54
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Here is a reply I received yesterday from EKWB: 
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