ECC memory for X670E

[rusty caterpillar]

Hi all need some help in choosing ECC RAM for my Asrock X670E Steel Legend and CPU Ryzen 9 7945 PRO. I know ECC is slower still I want to try it. Atm I have some Gskill 2x16GB locked at 4800 with 76-79ns in Aida64, which is slow anyway.

Not sure ECC is supported on this MBO although specs shows support for ECC memory.

Don't know how many ranks is supported by this MBO also, is dual channel a thing in ECC memory or one module will be ok . 32 GB -48GB will be enough for me.

I prefer some ECC memory which will have native 5200 speed because if is 4800 will be locked on 4800 by CPU and no BIOS settings will be possible in terms of tweaking timings and speed.

Used memory is fine specially if price is lower but, as I looked are not many native 5200 ECC DDR5, also registered I think is better than unregistered, I now unregistered can be faster.

Thanks for help

 

[10tothemin9volts]

Do you see any ECC settings in the BIOS? I would only buy ECC RAM (or this motherboard for this matter) if there is an ECC Enable (or similar) setting in the BIOS. AFAIK, ASUS is the only one with official ECC support on consumer AM5 (A620, B650, B650E, X670 and X670E). There is conflicting information for Asrock X670E Steel Legend, some say the ECC support has been removed to upsell their higher priced mobos, although indeed, ASROCK's page says: "- Supports DDR5 ECC/non-ECC, un-buffered memory up to 7600+(OC)*". Support for ECC could mean the RAM works. but the actual ECC functionality doesn't? You could call ASROCK (phone call if you want to save time and if your board is new so you can still send it back). I have the Kingston Server Premier DIMM (KSM48E40BD8KM-32HM), but I don't see them on X670E Steel Legend's Memory QVL.

 

[Caring1]

I believe ECC only works on the Pro series CPUs.

 

[Shou Miko]

I believe ECC only works on the Pro series CPUs.

Thread starter writes "Ryzen 9 Pro 7945 Pro" so I think the Pro series is covered.


@rusty caterpillar
One user on Asrock's forum for the X670E Steel Legends writes: 1.14.AS06 BIOS I'm able to get ECC working as intended.
Source: https://forum.asrock.com/forum_posts.asp?TID=25026

Sadly bios 1.14.AS06 is not available on Asrock's product page so it might be a beta bios, plus I am not sure if it would help since the Pro 7945 should boot since bios version 1.03 but was first validated on bios 1.24 which is older than 1.14.

If you have any issues reach out to Asrock's support team I am sure they can help they are usually really friendly and understand from my own experience the few times I wrote with them.

 

[azrael]

Hi all need some help in choosing ECC RAM for my Asrock X670E Steel Legend and CPU Ryzen 9 7945 PRO. I know ECC is slower still I want to try it. Atm I have some Gskill 2x16GB locked at 4800 with 76-79ns in Aida64, which is slow anyway.

Not sure ECC is supported on this MBO although specs shows support for ECC memory.

Don't know how many ranks is supported by this MBO also, is dual channel a thing in ECC memory or one module will be ok . 32 GB -48GB will be enough for me.

I prefer some ECC memory which will have native 5200 speed because if is 4800 will be locked on 4800 by CPU and no BIOS settings will be possible in terms of tweaking timings and speed.

Used memory is fine specially if price is lower but, as I looked are not many native 5200 ECC DDR5, also registered I think is better than unregistered, I now unregistered can be faster.

Thanks for help

First of all, your motherboard supports ECC memory. Almost all Ryzen processors do as well. The exception here are the monolithic APU ones originally designed for mobile/ The exception to that are the PRO versions. AFAIK all of those support ECC as well. As for the one you've stated, it supports ECC.

ECC DDR5 memory can be tricky in that *all* DD5 supports (and has to by design) on-die ECC. However, that's not the ECC you're looking for. On-die ECC is more like the error correction on SSDs. What you want is side-band ECC. The problem here is that it can be very difficult to find, because everyone and their dog lists all modules to have ECC due to the on-die ECC.

What you're looking for is "server memory", albeit unregistered. So ECC DDR5 UDIMMs. There are two manufacturers which give you that. Kingston and Micron/Crucial. Kingston has these while Crucial has these. Personally, I'm looking at this from Crucial/Micron, because they're currently the cheapest ones here and the fastest *and* actually manufactured by Micron (Kingston uses 3rd party chips). When searching for a retailer make sure to check for the exact part numbers.

Oh, and make sure to buy two modules. Dual channel is very much a thing with ECC as well. Actually, everything that holds true for normal memory also holds true for ECC memory.

 

[A Computer Guy]

What you're looking for is "server memory", albeit unregistered. So ECC DDR5 UDIMMs. There are two manufacturers which give you that. Kingston and Micron/Crucial. Kingston has these while Crucial has these. Personally, I'm looking at this from Crucial/Micron, because they're currently the cheapest ones here and the fastest *and* actually manufactured by Micron (Kingston uses 3rd party chips). When searching for a retailer make sure to check for the exact part numbers.

This (Crucial/Micron RAM you linked) is what I am using now in 64GB configuration with my 7950x. Compared to DDR4 it was quite expensive at the time so I opted to stay at 64GB (2 modules) for now.

For whatever reason my motherboard runs the ram with a bit tighter clocks after selecting the 5600MT's profile. It's been working really well, I have no complaints using that Micron memory.

 

[rusty caterpillar]

First of all, your motherboard supports ECC memory. Almost all Ryzen processors do as well. The exception here are the monolithic APU ones originally designed for mobile/ The exception to that are the PRO versions. AFAIK all of those support ECC as well. As for the one you've stated, it supports ECC.

ECC DDR5 memory can be tricky in that *all* DD5 supports (and has to by design) on-die ECC. However, that's not the ECC you're looking for. On-die ECC is more like the error correction on SSDs. What you want is side-band ECC. The problem here is that it can be very difficult to find, because everyone and their dog lists all modules to have ECC due to the on-die ECC.

What you're looking for is "server memory", albeit unregistered. So ECC DDR5 UDIMMs. There are two manufacturers which give you that. Kingston and Micron/Crucial. Kingston has these while Crucial has these. Personally, I'm looking at this from Crucial/Micron, because they're currently the cheapest ones here and the fastest *and* actually manufactured by Micron (Kingston uses 3rd party chips). When searching for a retailer make sure to check for the exact part numbers.

Oh, and make sure to buy two modules. Dual channel is very much a thing with ECC as well. Actually, everything that holds true for normal memory also holds true for ECC memory.

I know of DDR5 on die ECC but, yes I was referring to the server one, the real ECC. I was looking on Crucial website before posting and it came as my MBO supports UDIMM ECC as you said.
However if I can only get unregistered for this MBO maybe ECC is not fully supported.
Thanks anyway. I'll fish around maybe I'll find some used on Ebay.

This (Crucial/Micron RAM you linked) is what I am using now in 64GB configuration with my 7950x. Compared to DDR4 it was quite expensive at the time so I opted to stay at 64GB (2 modules) for now.

For whatever reason my motherboard runs the ram with a bit tighter clocks after selecting the 5600MT's profile. It's been working really well, I have no complaints using that Micron memory.

View attachment 384184 View attachment 384188

Is the native speed of this DDR5 4800 or 5200? Cause on my 7945 Pro I wouldn't be able to change the speed in BIOS or tweak the timings, this CPU will lock any DDR5 at the native speed.

Do you see any ECC settings in the BIOS? I would only buy ECC RAM (or this motherboard for this matter) if there is an ECC Enable (or similar) setting in the BIOS. AFAIK, ASUS is the only one with official ECC support on consumer AM5 (A620, B650, B650E, X670 and X670E). There is conflicting information for Asrock X670E Steel Legend, some say the ECC support has been removed to upsell their higher priced mobos, although indeed, ASROCK's page says: "- Supports DDR5 ECC/non-ECC, un-buffered memory up to 7600+(OC)*". Support for ECC could mean the RAM works. but the actual ECC functionality doesn't? You could call ASROCK (phone call if you want to save time and if your board is new so you can still send it back). I have the Kingston Server Premier DIMM (KSM48E40BD8KM-32HM), but I don't see them on X670E Steel Legend's Memory QVL.

I will check in BIOS for ECC.

 

[A Computer Guy]

I know of DDR5 on die ECC but, yes I was referring to the server one, the real ECC. I was looking on Crucial website before posting and it came as my MBO supports UDIMM ECC as you said.
However if I can only get unregistered for this MBO maybe ECC is not fully supported.
Thanks anyway. I'll fish around maybe I'll find some used on Ebay.

Registered is typically used for servers where you are likely to have much larger volumes of RAM.

Asrock X670E Steel Legend should be fine with UDIMM and using an updated UEFI. ASRock has seemed to me to be pretty consistent supporting ECC. For me I wouldn't have any worry doing a new build using that motherboard with Micron/Crucial RAM that was linked.

Is the native speed of this DDR5 4800 or 5200? C

The native speed of the modules I use are 5600MT's. My understanding at the time was there were some other speeds available but I wanted to get close to the AM5 6000MT's sweet spot so I choose the more expensive 5600MT's modules. The UEFI will default to 4800MT's or 5200MT's if I recall correctly. In ASRock UEFI it's just a matter of selecting the DIMM's 5600MT/s profile save, reboot.

because on my 7945 Pro I wouldn't be able to change the speed in BIOS or tweak the timings, this CPU will lock any DDR5 at the native speed.

That depends on the UEFI. I have an 4650g PRO w/ DDR4 ECC and my ASRock UEFI still allows changing the RAM speed no problem. YMMV depending on the motherboard but I don't think the CPU will limit your options there on AM4 or AM5 choosing RAM speed as long as the UEFI already allows this.

 

[rusty caterpillar]

That depends on the UEFI. I have an 4650g PRO w/ DDR4 ECC and my ASRock UEFI still allows changing the RAM speed no problem. YMMV depending on the motherboard but I don't think the CPU will limit your options there on AM4 or AM5 choosing RAM speed as long as the UEFI already allows this.

AM4 MBO seems to have more support on ECC.
On AM5 full support is consistent more on X870E boards.

Don't know if the BIOS(I'm on 3.10 atm) or CPU but, are definitely locked settings on DDR5. My DDR5 is 5200 Mt but, will only work with the PRO chip on 4800MT which is native speed of this sticks.
With the Ryzen 5 7600 chip worked on 5200MT or more on same MBO.
With the support of ECC on Asrock AM5 boards: Somebody already asked Asrock about PG Lightning X670E https://www.reddit.com/r/ASRock/comments/y3x33h/_/iuh3i51 and seems that doesn't support. Close price range with my MBO. Not sure the guy had a PRO CPU though.
There is I believe a DDR controller inside the PRO CPUs and I believe on the registered DDR5 that have like 8 chips and the ninth chip is the controller.

I can't find your Crucial DDR 5, maybe is not produced anymore.

 

[A Computer Guy]

AM4 MBO seems to have more support on ECC.
On AM5 full support is consistent more on X870E boards.

This is the first time I'm hearing that but I haven't been keeping up with recent events. My understanding was 600 and 800 series platforms are not really that different from each other.

Don't know if the BIOS(I'm on 3.10 atm) or CPU but, are definitely locked settings on DDR5. My DDR5 is 5200 Mt but, will only work with the PRO chip on 4800MT which is native speed of this sticks.
With the Ryzen 5 7600 chip worked on 5200MT or more on same MBO.

Well that's interesting.

With the support of ECC on Asrock AM5 boards: Somebody already asked Asrock about PG Lightning X670E https://www.reddit.com/r/ASRock/comments/y3x33h/_/iuh3i51 and seems that doesn't support. Close price range with my MBO. Not sure the guy had a PRO CPU though.

It took a long time for ECC to be implemented on AM5. That could be a really old post. The current webpage for that motherboard says it's supports ECC.

There is I believe a DDR controller inside the PRO CPUs and I believe on the registered DDR5 that have like 8 chips and the ninth chip is the controller.

These days the controller is on the CPU. You can lookup registered vs. unregistered for the difference.

 

[rusty caterpillar]

Only here

And I'm in UK, If order this will come with a very nasty import and VAT charges

This is the first time I'm hearing that but I haven't been keeping up with recent events. My understanding was 600 and 800 series platforms are not really that different from each other.

Well that's interesting.

It took a long time for ECC to be implemented on AM5. That could be a really old post. The current webpage for that motherboard says it's supports ECC.

These days the controller is on the CPU. You can lookup registered vs. unregistered for the difference.

Yes is still says ECC but, I think the play dirty referring on DDR5 on die ECC which is very far from real ECC.

 

[A Computer Guy]

Only here

View attachment 384207


And I'm in UK, If order this will come with a very nasty import and VAT charges


Yes is still says ECC but, I think the play dirty referring on DDR5 on die ECC which is very far from real ECC.

Looks like you will have to do some shopping around. The price doesn't seem to have gotten much better. I paid just shy of $400 USD with shipping back in September last year when Crucial/Micron website was selling them. I see the online store doesn't seem to sell them directly anymore.

 

[rusty caterpillar]

Looks like you will have to do some shopping around. The price doesn't seem to have gotten much better. I paid just shy of $400 USD with shipping back in September last year when Crucial/Micron website was selling them. I see the online store doesn't seem to sell them directly anymore.

On Crucial website I press Upgrade My Computer, put my MBO, results came with 2 pages of DDR 5, none of them are ECC.
https://uk.crucial.com/compatible-upgrade-for/asrock/x670e-steel-legend#memory

TBH I don't know even if my PC will boot with your modules since my CPU is different and my chipset as well, but is still a good bet.


I'll look around some more.

Anyways thanks for help.

 

[azrael]

On Crucial website I press Upgrade My Computer, put my MBO, results came with 2 pages of DDR 5, none of them are ECC.
https://uk.crucial.com/compatible-upgrade-for/asrock/x670e-steel-legend#memory

TBH I don't know even if my PC will boot with your modules since my CPU is different and my chipset as well, but is still a good bet.


I'll look around some more.

Anyways thanks for help.

Take those memory advisors with a pinch of salt. Considering you're using a consumer motherboard most of these advisors will never recommend any ECC memory to you. The two links I posted are really all you need to look at, and then decide which modules you want. Just make sure to buy two at a time for dual channel.

 

[Durhamranger]

Kingston KSM48E40BS8KM-16HM should work.....