[SOLVED] What motherboard do I need for a 3 RTX 3090 setup

[GomTang]

Hello,

I'm designing a deep learning workstation to accommodate 3xRTX3090 (when I can eventually get them).
I am having trouble finding a motherboard that will fit three triple-slot GPUs (RTX3090 FE).

My setup (so far) is as follows:

• CPU: AMD Thread ripper 3960X 3.8 GHz 24-Core Processor
• CPU cooler: Noctua NH-U14S TR4-SP3 82.52 CFM CPU Cooler
• RAM: G. Skill Trident Z RGB 128 GB (4 x 32 GB) DDR4-4000 CL18 Memory
• Motherboard (not sure if this will fit 3 GPUs): Gigabyte TRX40 DESIGNARE XL ATX sTRX4 Motherboard
• GPU: 3xNVIDIA GeForce RTX 3090 24 GB Founders Edition Video Card
• Case: Corsair 760T ATX Full Tower Case
• PSU: EVGA P2 1600 W 80+ Platinum Certified Fully Modular ATX Power Supply

Here is the PCPartpicker list: https://pcpartpicker.com/list/kHpN7X

Is there such motherboards that can accommodate three triple-slot GPUs and a thread ripper? Or should I use a intel Xeon chip and an appropriate motherboard?

 

[GomTang]

Hmmm, I see... I guess for now I just hope and wait they release blower-style cards for the 3090 and think about power limiting the cards.

Thanks!

 

[Jstonez]

The 3090 has a TDP of 350w. From nvidia. The AIB partner cards like the Gigabyte Puget used, can breach 400w+.

So if you got a 2 slot blower style, like the Gigabyte, you could manage 3 on a mobo, but you'd be looking at a potential 1200w+ draw that, plus another possible 400w from the cpu. That's well beyond a 1600w psu, so power limiting the cards would still get you serious horsepower, but enable you to be far more comfortable under that psu limitation. It'd have to be a balance of workload, see exactly how much cpu you are using while taxing the gpus. Total power draw on the pc.

LOL not to mention the $50,000.00 to $100,000.00 price for the custom designed motherboard, which because it was custom made would not come with a warrantee

 

[Jstonez]

The 3090 has a TDP of 350w. From nvidia. The AIB partner cards like the Gigabyte Puget used, can breach 400w+.

So if you got a 2 slot blower style, like the Gigabyte, you could manage 3 on a mobo, but you'd be looking at a potential 1200w+ draw that, plus another possible 400w from the cpu. That's well beyond a 1600w psu, so power limiting the cards would still get you serious horsepower, but enable you to be far more comfortable under that psu limitation. It'd have to be a balance of workload, see exactly how much cpu you are using while taxing the gpus. Total power draw on the pc.

That is not a solution because the motherboard does not exist. So nothing is solved

Sorry just being real

 

[logainofhades]

Well actually in my opinion as I have expressed, anyone who buys that particular system including the three video cards that can not be used in one system effectively, sure does have a lot of deep learning to do.

How are you to know whether they can be used effectively? You don't know the software they are using. He could mine on all 3 quite effectively. Just because you wouldn't be able to take full advantage of such a setup, doesn't mean others can't too.

 

[USAFRet]

That is not a solution because the motherboard does not exist. So nothing is solved

Sorry just being real

What are some of the other uses one might put gaming hardware to?

Mining, of course, is the easy answer.

How about, a decade ago, 1,760 PS3's built into a supercomputer.
https://phys.org/news/2010-12-air-playstation-3s-supercomputer.html

 

[Rogue Leader]

That is not a solution because the motherboard does not exist. So nothing is solved

Sorry just being real

This is all you need to know about this thread

I'm designing a deep learning workstation to accommodate 3xRTX3090

Since you don't understand what that is or why, your nonsensical commentary is unwelcome here. It is time for you to move along. Further transgressions will result in official sanctions.

 

[logainofhades]

Afaik, there aren't any motherboards that'll fit 3x triple slot gpus.

Yea using a mining case, and riser cables is the best option, if you want 3x triple slot cards.