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Connecting a second (or more) CPU to current system?

K

kerim

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Hello,
Is it possible to connect a second (or more) CPU to my current system?
I would like to increase the CPU power for computation tasks that has no multi-GPU support.
For example: connecting a Ryzen 9 5950X, next to my current Ryzen 9 5900X.
* My current system has a AMD Ryzen 9 5900X with ASRock X570 Taichi mobo.

From a simple Google search, I saw that there are dual-CPU motherboards around. But is that the only option?
Honestly, I don't want to change my mobo. And I would like to add a third or more CPUs in the future.

What do you suggest to me about this issue?
What is the logical workflow?

Thanks.
 
Alex Glawion

Alex Glawion

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Hey Kerim,
This is not possible with most CPUs. You definitely can't add additional CPUs on mainstream platforms with CPUs such as the Ryzen 5xxx series.

There are some Server / Workstation Motherboards that can hold up to 8 CPUs, but you won't fit them into an ATX case and they are mindboggingly expensive (think 20k+$).

What kind of computational tasks are you running? It might be easy to just get a second PC with a strong CPU, and hook this one up to your primary PC via LAN to share the workload - if the workload can be split up into smaller tasks.
 
Jerry James

Jerry James

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Hello,
Is it possible to connect a second (or more) CPU to my current system?
I would like to increase the CPU power for computation tasks that has no multi-GPU support.
For example: connecting a Ryzen 9 5950X, next to my current Ryzen 9 5900X.
* My current system has a AMD Ryzen 9 5900X with ASRock X570 Taichi mobo.

From a simple Google search, I saw that there are dual-CPU motherboards around. But is that the only option?
Honestly, I don't want to change my mobo. And I would like to add a third or more CPUs in the future.

What do you suggest to me about this issue?
What is the logical workflow?

Thanks.
You'll have to go with an enterprise motherboard and CPU to do it the right (easy) way. Here's an example - https://www.gigabyte.com/in/Enterprise/Server-Motherboard/MZ71-CE1-rev-3x

Theoretically, you could configure a single virtual system that leverages the processing power of both your computers, but it'll involve diving into some serious SysAdmin study - https://en.m.wikipedia.org/wiki/OpenSSI & https://en.wikipedia.org/wiki/Beowulf_cluster
 
K

kerim

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Hey Kerim,
This is not possible with most CPUs. You definitely can't add additional CPUs on mainstream platforms with CPUs such as the Ryzen 5xxx series.

There are some Server / Workstation Motherboards that can hold up to 8 CPUs, but you won't fit them into an ATX case and they are mindboggingly expensive (think 20k+$).

What kind of computational tasks are you running? It might be easy to just get a second PC with a strong CPU, and hook this one up to your primary PC via LAN to share the workload - if the workload can be split up into smaller tasks.

Houdini simulations. X-Particles simulations.
Experimental cloth simulations with Clo3D.
and also to empower CPU rendering with Arnold.

From your commands, it seems like a serious journey for me now.
I should postpone this dream :)
 
Alex Glawion

Alex Glawion

CG Hardware Specialist @ CGDirector
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We ran some X-Particles benchmarks here: https://www.cgdirector.com/x-particles-benchmark-results/, but didn't do any houdini or Clo3D Sim Benchmarks yet. I'll put that on my todo list.

See if that article helps. A seonc node just for simulation and cpu rendering might be worth it.
 
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