I read it yesterday in german. Source: www.pcgameshardware.de/CPU-CPU-154106/News/OC-Rekord-AMD-Epyc-4124P-6-7-GHz-Endkunden-Mainboard-1455761/

-- I saw those processors a while ago. I'm not sure if any mainboard vendor mentions those cpus in the support list. My mainbaord did not mention any of those processors as supported.

Maybe someone knows which AGESa supports those processors and on which mainboards.

_roman_I read it yesterday in german. Source: www.pcgameshardware.de/CPU-CPU-154106/News/OC-Rekord-AMD-Epyc-4124P-6-7-GHz-Endkunden-Mainboard-1455761/

-- I saw those processors a while ago. I'm not sure if any mainboard vendor mentions those cpus in the support list. My mainbaord did not mention any of those processors as supported.

Maybe someone knows which AGESa supports those processors and on which mainboards.

If they dont mention it, it means they've yet to release a bios or determine a need to. This is like Opteron all over again

_roman_Maybe someone knows which AGESa supports those processors and on which mainboards.

Checking a random ASUS B650 board - ROG STRIX B650-A GAMING WIFI - shows that EPYC variants are supported since BIOS 2613 which is the first one for Ryzen 9000 with AGESA 1.1.7.0 patch A.
Edit: Interestingly that CPU compatibility list does not include the 4-core 4124P.

I checked 3 random B650 Gigabyte boards and none claim support. Two MSI boards also don't claim support. 3 AsRock boards also don't.
I suspect those EPYCs will work fine with the Zen 5-capable AGESA, but only ASUS claims official support with ECC RAM.

Weird product

I am considering this. If I use a current AMD AM5 slot with a particular processor and an Asus board, will the motherboard be able to take advantage of ECC RAM? For example, with the AMD EPYC™ 4584PX processor, I would like to use ECC Registered RAM. I'm still in the early stages of my research, which I started a few days ago. Right now, I need to confirm whether or not this setup will work. I have seen what others have experienced, but I need to determine if a particular BIOS is required. Did Asus implement this feature on its own, or can it be obtained directly from Asus for the X870-I motherboard?

I am going for the ultimate stability in an ITX build.

Please give the Guy, (Sergmann) his deserved credit and call him by his name!

"A User" ?
Name is literally in the Desktopwallpaper. No reason to keep secrets.

HBSoundI am considering this. If I use a current AMD AM5 slot with a particular processor and an Asus board, will the motherboard be able to take advantage of ECC RAM? For example, with the AMD EPYC™ 4584PX processor, I would like to use ECC Registered RAM.

You will not be able to use ECC Registered RAM because for DDR5 R(egistered)DIMM and U(nbuffered)DIMM are physically incompatible. You need to consider ECC UDIMM DDR5 for this setup. As for the 4584PX it depends on the motherboard. I linked one ASUS board that does have it on the official compatibility list.

HBSoundI'm still in the early stages of my research, which I started a few days ago. Right now, I need to confirm whether or not this setup will work. I have seen what others have experienced, but I need to determine if a particular BIOS is required. Did Asus implement this feature on its own, or can it be obtained directly from Asus for the X870-I motherboard?

I am going for the ultimate stability in an ITX build.

You linked both 4584PX which is Zen 4 and 9950X which is Zen 5. If you take a look at AMD's site the latter also supports ECC - "ECC Support Yes (Requires mobo support)".
For the ASUS board I linked ECC-DIMM is indicated as supported for both 9950X and 4584PX.

If you want a fully supported setup you have to check the board's documentation.

ncrsYou will not be able to use ECC Registered RAM because for DDR5 R(egistered)DIMM and U(nbuffered)DIMM are physically incompatible. You need to consider ECC UDIMM DDR5 for this setup. As for the 4584PX it depends on the motherboard. I linked one ASUS board that does have it on the official compatibility list.


You linked both 4584PX which is Zen 4 and 9950X which is Zen 5. If you take a look at AMD's site the latter also supports ECC - "ECC Support Yes (Requires mobo support)".
For the ASUS board I linked ECC-DIMM is indicated as supported for both 9950X and 4584PX.

If you want a fully supported setup you have to check the board's documentation.

Thank you. So this use is not a way to get that ECC Registered DIMM support - DANG!
Also, the manual for the board has not been released yet.

Thank you!

HBSoundThank you. So this use is not a way to get that ECC Registered DIMM support - DANG!
Also, the manual for the board has not been released yet.

Thank you!

You're welcome.

What is your reason for wanting ECC RDIMM support? Those won't work on AM5 (or LGA1700), on any board. Only UDIMMs will.

ncrsYou're welcome.

What is your reason for wanting ECC RDIMM support? Those won't work on AM5 (or LGA1700), on any board. Only UDIMMs will.

I work in the world of CAD/3D/Rendering. I have always used workstation-style machines that supported multi-corrs and etc. But doing that workstation style always came with a large system, and expense. This time around, in building a new matching, I wanted to see if I could use the latest AMD chips and Asus to do what I do without a high WRX style motherboard and processor ($$$$$). The main difference I know is that I have always used ECC Registered RAM in all my machines just for the extra leg of support. So in this build, I knew nothing having ECC registered RAM was not going to happen, and almost unlimited PCI lanes support.

So I wanted to the homework to see IF the Epyc style processor in this main streem motherboard Asus E870-I (ITX) motherboard will make this work out.

HBSoundI work in the world of CAD/3D/Rendering. I have always used workstation-style machines that supported multi-corrs and etc. But doing that workstation style always came with a large system, and expense. This time around, in building a new matching, I wanted to see if I could use the latest AMD chips and Asus to do what I do without a high WRX style motherboard and processor ($$$$$). The main difference I know is that I have always used ECC Registered RAM in all my machines just for the extra leg of support. So in this build, I knew nothing having ECC registered RAM was not going to happen, and almost unlimited PCI lanes support.

So I wanted to the homework to see IF the Epyc style processor in this main streem motherboard Asus E870-I (ITX) motherboard will make this work out.

I see. You will get the same level of error protection from ECC UDIMM as you would get from RDIMMs. The difference for your use case would be capacity since the biggest UDIMM ECC are 48GB, so 96GB total for the board you selected. It does say "ECC and Non-ECC Un-buffered DIMM*" in the specification on ASUS website, so I suspect ECC UDIMM will be officially supported on that board.

ncrsI see. You will get the same level of error protection from ECC UDIMM as you would get from RDIMMs. The difference for your use case would be capacity since the biggest UDIMM ECC are 48GB, so 96GB total for the board you selected. It does say "ECC and Non-ECC Un-buffered DIMM*" in the specification on ASUS website, so I suspect ECC UDIMM will be officially supported on that board.

Thank you. On paper, I like the following two RAM kits.

Team Group - EXPERT DDR5 DESKTOP MEMORY WHITE 96GB(2x48GB) 6800MHz CL36 (images.teamgroupinc.com/products/memory/u-dimm/ddr5/expert/spec-sheet/expert-en.pdf)
GKill - F5-5600J4040D48GX2-FX5 Flare X5 DDR5-5600 CL40-40-40-89 1.25V 96GB (2x48GB) (www.gskill.com/specification/165/396/1683011081/F5-5600J4040D48GX2-FX5-Specification)

HBSoundThank you. On paper, I like the following two RAM kits.

Team Group - EXPERT DDR5 DESKTOP MEMORY WHITE 96GB(2x48GB) 6800MHz CL36 (images.teamgroupinc.com/products/memory/u-dimm/ddr5/expert/spec-sheet/expert-en.pdf)
GKill - F5-5600J4040D48GX2-FX5 Flare X5 DDR5-5600 CL40-40-40-89 1.25V 96GB (2x48GB) (www.gskill.com/specification/165/396/1683011081/F5-5600J4040D48GX2-FX5-Specification)

Both of them are without ECC, apart from standard on-chip ECC that's common for all DDR5, but that's not what we were discussing.
For ECC UDIMMs you need to look at the server/workstation market, for example Kingston KSM56E46BD8KM-48HM.

I can send a picture right now, but check this out.
Look on the right side of this page. It states this ram has Unregistered ECC ram support - is this not the same?

www.teamgroupinc.com/en/product-detail/memory/T-CREATE/expert-u-dimm-ddr5-black/expert-u-dimm-ddr5-black-CTCED596G6800HC36DDC01/

ncrsBoth of them are without ECC, apart from standard on-chip ECC that's common for all DDR5, but that's not what we were discussing.
For ECC UDIMMs you need to look at the server/workstation market, for example Kingston KSM56E46BD8KM-48HM.

According to T-Create - DDR5 memory supports On-die ECC debugging mechanism, providing error correction and detection features to make the system more stable while pursuing performance.

kondaminWeird product

AMD didn't have an EPYC product this low in their product stack in terms of cost to compete with Intel. It is now possible to purchase a low(er) cost AMD OEM server with everything that entails (ECC, Break to repair SLA's etc). As an example we have a 4 Core Intel XEON CPU in our backup to tape server for on prem workloads, doesn't need anything more. We are hybrid and use SaaS backup for our cloud based workloads like 365.

I don't think this is intended for what was done in the news post and discussed in the thread but interesting none the less.

HBSoundI can send a picture right now, but check this out.
Look on the right side of this page. It states this ram has Unregistered ECC ram support - is this not the same?

www.teamgroupinc.com/en/product-detail/memory/T-CREATE/expert-u-dimm-ddr5-black/expert-u-dimm-ddr5-black-CTCED596G6800HC36DDC01/


According to T-Create - DDR5 memory supports On-die ECC debugging mechanism, providing error correction and detection features to make the system more stable while pursuing performance.



Is this not ECC on the Team Group RAM?

Unfortunately with DDR5 there are two different mechanisms that are called "ECC". Every single DDR5 module has internal, on-die (or on-chip) ECC that only works within one chip on a DIMM. This mechanism is automatic and there's no feedback to the motherboard or operating system. This is not what we were discussing here.

The second and more traditional ECC is module-wide. The entire DIMM is protected by adding extra physical RAM chips to each module so that they can store recovery information. This error correction is providing feedback to the motherboard and the operating system. One bit errors are fixed automatically and they are reported so that the system knows a potential problem has corrected and was corrected. Two bit errors are reported as a critical error so the OS knows that RAM is broken.

This makes ECC, or "true ECC" RAM more expensive - each DIMM contains 2 extra chips (or 4 depending on size).

Some vendors use this ambiguity to advertise their products ass "DDR5 ECC" which is technically correct when you consider the mandatory on-die ECC for DDR5, but it's not the "true ECC" that most people want.
Registered DIMMs are always "true ECC", but UDIMMs are not. Only server/workstation UDIMMs do have this feature.

GigaherzPlease give the Guy, (Sergmann) his deserved credit and call him by his name!

"A User" ?
Name is literally in the Desktopwallpaper. No reason to keep secrets.

@btarunr

I do second this motion as well, and it would be nice to also state the nature of the OC (Liquid nitrogen) in the title.

a small error slipped into your news
it was not Sergmann who used an asus rog x670e gene but me Darkgregor
hwbot.org/submission/5643139_

Darkgregora small error slipped into your news
it was not Sergmann who used an asus rog x670e gene but me Darkgregor
hwbot.org/submission/5643139_

Welcome to TPU :)