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You can also get a threadripper pro

I bought a second hand first gen EPYC for my desktop. I’m not sure it was a great idea overall but it does work fine and I have 128gb full ECC, two M2 slots on the board and many many PCIe 3x lanes for anything else I want to add. The built in BMC is handy for remote access.

The 32 cores is pretty pointless, I very rarely use more than half. And it probably uses way to much power.

The non-pro threadrippers also use ECC now.

They always used ECC but in UDIMMs, not RDIMMs.

What is the difference between UDIMM and RDIMM and which one is preferred and why?

It seems RDIMM’s are mostly supported on higher end server boards but I haven’t seen a technical comparison of the two types.

RDIMMs have buffers on the memory lines to improve signal integrity, this is only helpful when there are many slots on the same memory controller channel. (ex. Servers often support 4 DIMMs per channel)

I think RDIMMs are available in higher capacities than UDIMMs. But the registering adds additional latency. So if you need the capacity, RDIMM is the way to go. But if you don't, you might prefer UDIMMs.

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