RDIMM motherboard that won't kill the budget

What are my options for a workstation board that can accomodate 4-6 DDR5 RDIMMS (not sure if I can specify the model of the sticks I have right now or that would be considred a solicitation)

and amd or an intel board that can take two 32gb registered rdimms (I could tell ya how I ended up with these but I’m embarassed to volunteer that information unless someone asks) with 2-4 rdimm sockets left to grow to 128gb or maybe even 192gb.

This is to host Hauptwerk software, it takes about 4-8GB per cpu core depending on the setup
(organ chosen, etc).

If I understand correctly there typically will be 6 slot options at the minimum cause in 4rdimm
setup the bandwidth is lower than for 4 udimm setup and therefore such a board has no sense?

192gb / 8gb per core is 24+ core processor which I assume catapults me out of the epyc 4004 am5 territory into the whone new $$$$$$ game which partly why I’m asking.

And I havent; tracked Xeon line in the ast 15 years so have no clue if there are competitive options
there.

Not sure if I’m saving chosing this over an off the shelf Mac Studio which is about $5600 built
to 128gb spec(((((

Thanks for any input.

I think you are going to have trouble building a 24 core+ ddr5 system under $5600.

Not sure if you’re looking for a system to be used in a business, but eBay occasionally has interesting options.

Taking the above as an example (not endorsing) you’d need to add about $1,000 in RAM and have a system with 32 cores (64 threads) and 8 channels of DDR5-4800 RDIMM memory for much less than $5,600.

I am not familiar with Hauptwerk software and what kind of resources are really needed.

You need to move beyond EPYC 4004 mostly if you’re IO or memory limited by that platform.

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There are not any mainstream alternatives for enteprise grade like that setup I am afraid.
Rdimm support implies workstation and enteprise only, space shrunk with death HEDT nad HEDT++ segment.

So if on budget ,you need to target recyclers of ebay, you can he get good offers there.

I managed to snag 16core second gen epyc + board and 8*16 DDR RDIMM for about 1200 USD year or two ago during supply glut.

  1. Is there a specific reason you need DRR5 cause if not DDR4 platforms are a lot cheaper (WRX80, SP3, C621A)

  2. AM5 and 1851 do not support RDIMMs

  3. If you want to go with DDR5, SP6 is probably your cheapest option

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DDR5 memory is insanely expensive, OP. I am looking at it myself. It’s like $220+ per 32GB stick.