Question How to power a 6-GPU system?

Moaaz allaham

Prominent
Mar 18, 2020
2
0
510
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Hello,

I am currently working on building a deep learning machine that will have 6 x 3090 GPUs installed, and as you may already know, each 3090 requires 350 watt, meaning the needed PSU should be (350 x 6) = 2100 watt (just for the GPUs) in addition to few hundreds to run the other components.

The problem is that only 1600 watt PSU exist at the moment, which made me consider using two 1600 watt PSUs. However, after researching it shortly, I can see that using multiple PSU is not a recommended solution. And experimenting with such a system is probably not the best idea :S , so I just want to hear your opinions and what you think I should do.

Thanks in advance.
 

Moaaz allaham

Prominent
Mar 18, 2020
2
0
510
0
u will need multiple PSUs, there are mainboards which can run several PSUs or use dyi cables which will start other PSU
https://www.amazon.com/Dual-24-Pin-Motherboard-Power-Cable/dp/B094H99HR1
I have seen some people talking about those extensions, but that majority are warning others not to use it.
Just try to read the reviews of the product in the link you sent me :S .

Idk if the invention itself is bad or the material quality is just bad and causing problems.
 

Vic 40

Titan
Ambassador
Thought about this one, but tops out at 1000watt. They talk about how two psu's can be connected to each other, but wonder if three is possible too since all models have the connectors for the extra psu, maybe contact Phantek support for that and for questions whether all connectors of each psu can be used and this is not just for redundancy,

http://phanteks.com/Revolt-Pro.html
 

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