ECC RAM for Taichi X370

I am trying to install some ECC RAM in my Taichi X370 (Ryzen 7 1700; Samsung 970EVO 500GB; GeForce GTX 1050 Ti; Linux Mint 19.1 [Tessa]). The computer does not post, but repeatedly stops, pauses, then tries to restart. Dr. Debug shows 0d (which, I believe, means that I have a memory error). The ECC RAM that I installed are two SAMSUNG 16GB 288-Pin DDR4 SDRAM ECC (Registered DDR4 2666 [PC4 21300] Server Memory Model M393A2K40BB2-CTD). Their Rank x Org. is 1R x 4, which is a single rank DIMM. This is my first build, and I obviously failed to ensure that ASRock had listed this RAM as compatible with the Taichi X370. (Yeah. Boy do I feel stupid. ) Nonetheless, is there any chance that I might get the RAM to work in it? I have read that ASRock has made headway on getting ECC RAM working on its motherboards, and with my recent update to BIOS version P5.10 I notice various ECC-related settings. I?™m hoping that there might be BIOS settings with which my RAM might work. Or is this a lost cause?

Many thanks for your response. Here are my thoughts on your four points:

1) On even the first Ryzen processors, ECC is enabled and working but not validated (and thus not officially supported) by AMD (www.hardwarecanucks.com/forum/hardware-canucks-reviews/75030-ecc-memory-amds-ryzen-deep-dive.html). This evidently also holds for Ryzen Pro (www.reddit.com/r/Amd/comments/74mljp/does_ryzen_pro_have_validated_ecc_support/). My understanding is that if there is ECC support, it has to come from the MoBo manufacturer. And some ECC support is provided by ASRock, as evident in the first-listed URL above for precisely my Taichi X370.

2) Yep. It?™s buffered RAM (www.samsung.com/semiconductor/dram/module/M393A2K40BB2-CTD/), which means that it is normally used in servers. But again, this is not a CPU issue, since ECC is enabled in my Ryzen 7 (although it remains unclear if this is exclusively for unbuffered ECC RAM).

3) Your third point targets precisely what I am asking. Namely, does ASRock have sufficient ECC support in its BIOS version P5.10 to support my RAM?

4) ASRock?™s QVL (www.asrock.com/mb/AMD/X370 Taichi/index.asp#Memory) does not list my RAM module. (I?™ve already acknowledged my stupidity in this regard.) The two ECC modules that it does list are both unbuffered, however. And so, buffered RAM may not be supported by the MoBo. What I would like here is confirmation that this is (or is not) the case. Is this something that you can help me with, xhue?

AMD's website is terribly uninformative regarding their ECC-enabled CPU's (in)capacity to handle buffered memory. However, I did find a Canadian site (utcc.utoronto.ca/~cks/space/blog/tech/RyzenMemorySpeedAndECC) where they cite Kingston as confirming that "you need unbuffered DDR4 DIMMs for Ryzen". I cannot see where Kingston says this currently. (The Canadian URL is from November 2017, and so kingston.com has likely changed its web pages since then.) Nonetheless, since my Ryzen 7 1700 was introduced prior to the posting, I'm convinced that the statement holds in my case. So my question seems to be answered: Trying to get a Ryzen 7 1700 to work with registered (or buffered) RAM is a lost cause--a problem unrelated to my Taichi X370 or its bios. Thanks, xhue, for helping me puzzle this out.