Winchester4729492
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After seven months on the EVGA queue, my number came up. I got to buy a RTX 3090 XC3 with EVGA's waterblock preinstalled. Does anyone know if there is an active backplate that is compatible with the EVGA waterblock for installation? I want to add a waterblock to cover the 3090 back side RAM. One idea is that a third party active backplate might be compatible with the EVGA front side waterblock. I have the specs from the website & have started looking, but would welcome any recommendations the community has.
post edited by Winchester4729492 - 2022/01/23 21:03:32
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aki9111996
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Re: Active Backplate compatible with EVGA GeForce RTX 3090 XC3 ULTRA HYDRO COPPER
2022/01/22 20:16:39
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Card does have a backplate though why do you need a third party backplate ?
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Winchester4729492
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Re: Active Backplate compatible with EVGA GeForce RTX 3090 XC3 ULTRA HYDRO COPPER
2022/01/22 20:23:32
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aki9111996
Card does have a backplate though why do you need a third party backplate ?
My understanding is that the HYDRO COPPER is single sided waterblock. So the backplate is passive metal, not watercooled. I am considering how to add a waterblock to the back side to cover off the back side RAM on the 3090. Wondering if any third party water cooled backplates are compatible with the EVGA provided front side waterblock. Usually you have to get the back waterblock that fits to the front.
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aki9111996
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Re: Active Backplate compatible with EVGA GeForce RTX 3090 XC3 ULTRA HYDRO COPPER
2022/01/22 20:33:41
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I correct me if I am wrong but most water block only cools front side of the pcb back side is passively cooled
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MaelstromOC
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Re: Active Backplate compatible with EVGA GeForce RTX 3090 XC3 ULTRA HYDRO COPPER
2022/01/22 20:58:19
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Correct, but EK has two blocks that can work together, hence the "active" backplate. It water cools the back side so the memory can not be running at almost 100c all the time lol.
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Winchester4729492
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Re: Active Backplate compatible with EVGA GeForce RTX 3090 XC3 ULTRA HYDRO COPPER
2022/01/22 21:08:30
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aki9111996
I correct me if I am wrong but most water block only cools front side of the pcb back side is passively cooled
For the EVGA XC3 3090, EKWB makes an active backplate: EK-Quantum Vector XC3 RTX 3080/3090 Active Backplate
I have read rumours the EVGA HYDRO COPPER are an EKWB design. It would be awesome if the HYDRO COPPER was compatible with the EKWB Vector XC3 - that's what I would get. If anyone can confirm that, that would answer my question. Byski makes active backplate waterblocks for the 3090 cards and a VRAM cooler. Bitspower makes an integrated active backplate for Founders Edition style PCBs and a VRAM cooler.
post edited by Winchester4729492 - 2022/01/22 21:19:38
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Winchester4729492
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Re: Active Backplate compatible with EVGA GeForce RTX 3090 XC3 ULTRA HYDRO COPPER
2022/01/23 20:57:15
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An update to the thread. EKWB Configurator for the EK-Quantum Vector XC3 RTX 3080/3090 Active Backplate explicitly lists the 24G-P5-3979-KR with "physical" compatibility which means they have actually tried it. This is good! The way I read the EKWB configurator is that I can remove the 3090 XC3 passive backplate, substitute the Quantum Vector XC3 active backplate, and that this is a supported configuration. I have a question into EKWB support to see if they agree. Has anyone on the forum done this?
post edited by Winchester4729492 - 2022/01/23 21:03:02
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the_Scarlet_one
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Re: Active Backplate compatible with EVGA GeForce RTX 3090 XC3 ULTRA HYDRO COPPER
2022/01/24 07:35:11
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☄ Helpfulby Winchester4729492 2022/01/24 13:14:15
EKWB will not work with EVGA waterblock. EKWB is only stating that their active backplate and waterblock will be compatible with the EVGA PCB, not mixing two brands of cooling. The EKWB terminal will not line up to EVGA hydrocopper and would, at the very minimum, require very strange tubing runs to connect the to products, IF the terminals from each block does not block the other from fitting.
The rumor you heard is wrong. EKWB only made a single series of hydrocopper blocks for EVGA over 5 years ago. That is not true today.
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Gotspeed_2000
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Re: Active Backplate compatible with EVGA GeForce RTX 3090 XC3 ULTRA HYDRO COPPER
2022/01/24 12:21:11
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☄ Helpfulby Winchester4729492 2022/01/24 13:18:48
You can try the MP5 works active back plate. There is a thread about the 3090 Kingpin and cooling the back plate where one user: RedTeamTango recently posted his results when he added the Mp5 works backplate to his HC Kingpin. He posted actual temps from a variety of points and the before and after impacts of the addition of the MP5 works plate to his gpu. You might want to reach out to him as I think he did a great job adding it into his loop. Since his gpu is a HC, his build would highly relate to yours. Here is the link to that thread: https://forums.evga.com/3...cool-m3219773-p44.aspx
post edited by Gotspeed_2000 - 2022/01/24 12:22:57
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Winchester4729492
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Re: Active Backplate compatible with EVGA GeForce RTX 3090 XC3 ULTRA HYDRO COPPER
2022/01/24 13:18:29
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the_Scarlet_one
EKWB will not work with EVGA waterblock. EKWB is only stating that their active backplate and waterblock will be compatible with the EVGA PCB, not mixing two brands of cooling. The EKWB terminal will not line up to EVGA hydrocopper and would, at the very minimum, require very strange tubing runs to connect the to products, IF the terminals from each block does not block the other from fitting.
That's super helpful thank you for responding. As I think about it there are three fit issues: - will the rear waterblock fit the card
- will the rear waterblock be obstructed by the front card
- will the rear waterblock terminal line up with the front waterblock
You are saying the Configurator only answers (1) positively, the other two are at risk. You are saying the EKWB backplate for sure won't work?
post edited by Winchester4729492 - 2022/01/24 13:36:40
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Winchester4729492
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Re: Active Backplate compatible with EVGA GeForce RTX 3090 XC3 ULTRA HYDRO COPPER
2022/01/24 13:35:26
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Gotspeed_2000
You can try the MP5 works active back plate.
I was looking at VRAM coolers from bytski & Bitspower for a similar idea. I have not heard of MP4 before. This is a great option, thank you! It looks like it isn't screwed on, it just sits on the backplate with clips... that's an interesting solution... I don't have the XC3 Hydro Copper in hand as yet. Is it considered a "flat backplate"? Its hard to assess from the manual. Looks like yes...
post edited by Winchester4729492 - 2022/01/24 13:44:28
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Gotspeed_2000
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Re: Active Backplate compatible with EVGA GeForce RTX 3090 XC3 ULTRA HYDRO COPPER
2022/01/24 14:18:07
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I believe it would fit, but the mounting points are something that Redteamtango and others who have used it could go into additional detail with. There are a few youtube content creators who reviewed the product as well. I think it would work with any gpu from evga that has a metal back plate. You might want to ask Redteamtango about his addition of a thermal pad to the rear plate and where he got his materials. He did the work and his is recent so I'd look toward him for some pointers and help to determine which route is best for you.
Corsair 1000D Obsidian Case I9 13900K with EK Velocity 2 Block ASUS 4090 Strix with Optimus Block ASUS Hero Z690 Mobo 64GB DDR5 RAM Trident 6000Mhz 1TB Nvme primary /2*2TB Nvme secondary/1tb & 2TB SSD drive EVGA 1600 Watt PSU 30 Lian Li AL120 fans 2 * 480mm medium thickness rad, 2 * 360mm medium thickness rad, with Two EK Pump/res combos. Custom hard tube loop. Samsung G7 32" Monitor EVGA Z20 Keyboard Glorious Model O
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the_Scarlet_one
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Re: Active Backplate compatible with EVGA GeForce RTX 3090 XC3 ULTRA HYDRO COPPER
2022/01/24 15:01:08
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☼ Best Answerby Winchester4729492 2022/01/25 11:38:44
Winchester4729492
That's super helpful thank you for responding.
As I think about it there are three fit issues:- will the rear waterblock fit the card
- will the rear waterblock be obstructed by the front card
- will the rear waterblock terminal line up with the front waterblock
You are saying the Configurator only answers (1) positively, the other two are at risk. You are saying the EKWB backplate for sure won't work?
100% Absolutely NOT going to work. See the red boxes. Notice that the Hydrocopper terminal goes to the mounting screw in the red, and the hydrocopper water terminal also goes past the PCB.  PCB Circled for reference:  If you look at the placement of the terminal, the holes will never line up. If you also look at the size of the terminal for the EKWB, you will see that even if you get a single piece terminal, that a small portion will overhang the block itself, and come near the PCB, hitting the hydrocopper terminal.  In the end, I would suggest sticking with the backplate you have or switch to a different companies specific block and backplate that are guaranteed to work together.
post edited by the_Scarlet_one - 2022/01/24 16:45:35
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Winchester4729492
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Re: Active Backplate compatible with EVGA GeForce RTX 3090 XC3 ULTRA HYDRO COPPER
2022/01/25 11:38:38
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the_Scarlet_one
100% Absolutely NOT going to work.
Yes, you are definitely right. On top of your photos, I tracked down the dimensions of the two cards, and they are dimensionally incompatible. Thanks for your help. Tried to paste the dimension images in but get an error. Also can't post links either... sigh. Anyone looking for the dimensions see the specs tab of the EVGA XC3 Hydro Copper product page & the installation manual of the EKWB XC3 Active Backplate on the EKWB product page. Off to check out VRAM coolers. MP5 looks possible...
post edited by Winchester4729492 - 2022/01/25 11:39:55
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Winchester4729492
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Re: Active Backplate compatible with EVGA GeForce RTX 3090 XC3 ULTRA HYDRO COPPER
2022/01/26 19:22:50
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I looked at the price between the air vs water cooled 3090 XC3.
The price difference is US$30. So changing the waterblock is not a significant financial penalty.
I decided to go forward with replacing the EVGA waterblock with the EKWB XC3 waterblock & add the EKWB XC3 active backplate.
Problem solved.
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