AM5 ECC support£

ApplesOfEpicness wrote: I have managed to reach out to an AMD engineer, who has confirmed that the issue is on their end, and they are targeting a fix to release in AGESA 1004/1005. No ETA on when they will be available, but at least we know it is an AMD problem/

Many thanks for the update. So as of my understanding ASUS claiming official ECC support but it does not work currently and ASRock seems to have removed advertisement for official ECC support. Both are not supporting it currently in practice.

So if ECC support is going to be in future AGESA updates there is hope that all/most AM5 mainboards will support ECC in the future. ASUS essentially need to as they advertise ECC support and ASRock might be changing their minds as soon as support from AMD finally works.

So let's wait a bit for the upcoming AGESA releases and how mainboard manufacturers will support ECC. Perhaps you can perform the same test again after both manufacturers released updates.

Unless Gigabyte "unlaunches" MC13-LE0 and MC13-LE1, the existence of these boards prove that AM5 and Ryzen 7000-series support ECC memory, so what AsRock is doing is more perplexing than ever.

Maybe they decided late to only support ECC memory on AsRockRack boards....

SkyBeam wrote: Also you need to be careful as some manufacturers are listing DDR5 to be always ECC-enabled as DDR5 is featuring some On-Die ECC.

I don't think that is what ASUS is doing because they explicitly explain the difference.

Their specifications say, "ECC and Non-ECC, Un-buffered Memory*"

And later in the same page, they have the following explanation for the (*):
"* Non-ECC, Un-buffered DDR5 Memory supports On-Die ECC function"

Xaltar wrote: Out of curiosity, have you seen any other brand boards still listing it? It is a bit odd if only ASRock pulled the info down.

Yes, as soon as I noticed the changes in ASRock specification pages, I looked at ASUS page (because I already looked at one of theirs before), and it still says, "ECC and Non-ECC, Un-buffered Memory*" for ROG STRIX X670E-I GAMING WIFI

Note ASUS has always limited ECC support to their top-range models, whereas ASRock generally supported ECC on their entire range. I didn't look for other models, as I'm generally only interested in Mini-ITX boards (for small server builds).

When the specifications for X670 boards were first listed, they all said, "Supports DDR5 ECC/non-ECC, un-buffered memory up to 6000+(OC)*"

When B650 boards got listed recently, NONE of their specifications mentioned ECC memory support.

In fact, even the X670 board specifications were changed to remove ECC support, and now they all say, "Supports non-ECC, un-buffered memory up to 6600+(OC)"

Looking through the WayBackMachine (archive.org) history for one of the boards (X670E Taichi), 2022-10-03 version says ECC support, but 2022-10-06 version no longer says ECC support.

When Wendell (of Level1Tech) did his initial review of Zen4, he said he tested ECC function on ASRock board by injecting errors, and it worked.

So what's going on? Is ASRock backtracking on this feature?

Every AM4 motherboard I bought are ASRock. That's 9 of them, including one ASRockRack board. If ASRock stops supporting ECC memory with AM5, I have ZERO reason to buy another ASRock motherboard.