A few questions about EPYC 4004 series

Hardware Hub CPU
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Hello guys and gals!

I’ve been scouring the net in attempts to get some info about the EPYC 4004 series CPUs.
Here’s a few things that I am unsure about:

  • Is there a concrete rule if the 4004 series work on ANY AM5 socket(including consumer MBs), or it does only with 4004-certified boards? Or maybe it does, with a particular set of AMD chipsets? I can’t find proper info regarding this, while it turns out that 4004 works on SOME consumer boards. (as in Wendell’s video)

  • If it indeed works on most consumer boards, would it work the same way Ryzen CPUs work, in terms of ECC?

  • Do the EPYC 4004 series include an iGPU? The AMD site mentions NONE of it. At the same time, some sources mention RDNA Graphics, some do not. The number of PCIE lanes allows it anyways.
    If there is indeed an iGPU, how can I find info on what it is and how much punch it packs? (especially compared to stuff like the 780M in the Ryzen 8000 series)

If anyone here has a 4004 CPU, it would really be great to shine some light on all that stuff.

Thanks!

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  1. No, read the CPU compatibility charts
  2. Yes? Although I don’t really understand your question
  3. No iGPU
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Thanks for the reply.

  1. What do you mean by CPU compatibility charts? QVL lists at the MB vendors?
    That does not give concrete info, as 4004 obviously works on consumer boards, while same board QVLs don’t mention it.

  2. SEC-DED/Chipkill/Patrol Scrubbing?

  3. What’s this then?

    image
    image1453×810 82.7 KB

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VERY much a crapchute-- since no formal spec given, about Epyc 4004s
You’d need to rummage, each interested mainboard, if it’ll support AM5-Epyc [or not]
The CPU Compatibility listings, may have a quick filter, to immediately see series option

Edit:
Like this mainboard, lists supporting Epyc 4004 SKUs

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Yeah, I just noticed there’s a searchbox per CPU model. Thanks!
It turns out ASUS have provided support for pretty much all B650 boards. :slight_smile:

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@wendell can you shed some light please?
The igpu thing is really confusing, as it is even mentioned in the official slides…
If I’m getting this correctly, the 4004 is just a rebrand of 7000 series, silicon-wise?

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The iGPU, would likely be nowhere near 780M [Would’ve consumed PCIe Lanes]
Whether its older RDNA fab or newer, I’d anticipate miniscule count [enough for codecs / display]

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That’d be great for something like a TrueNAS build, where one needs a GPU just for transcoding. Because without one, it will cost [more]lanes/slots/space to have a dedicated one.

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Yeah. So, unless the mobo manufacturer did something to specifically cripple the CPUs, EPYC 4004 should work on any AM5 board. I dunno why anybody would pay the extra for 4004.

Raphael and Granite Ridge’s IO die has two RDNA2 cores.

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