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Link to the comment of the CEO of AMD confirming that Ryzen supports ECC memory: https://www.reddit.com/r/Amd/comments/5x4hxu/we_are_amd_creators_of_athlon_rad

Link to the comment of the CEO of AMD confirming that Ryzen supports ECC memory: https://www.reddit.com/r/Amd/comments/5x4hxu/we_are_amd_creators_of_athlon_radeon_and_other/def58sv/ https://www.reddit.com/r/Amd/comments/5x4hxu/we_are_amd_crea...

BayesStreet 10y ago
For anyone looking at a new AM4 build with high speed memory, be warned that Linus' review stated he could not POST with memory clocked past 2666MHz[0] [0]https://youtu.be/9wJQEHNYE7M?t=4m43s https://youtu.be/9wJQEHNYE7M?t=4m43s
- jrockway 10y ago
  Is this uncommon? I have a 6950X with some "3200MHz" RAM, and it definitely doesn't work reliably at that speed. Nothing above 2666MHz will pass stress tests, even with conservative timings. Ultimately the memory clock speed doesn't affect performance very much, so I'm not sure it matters.
- AlphaSite 10y ago
  It's very motherboard dependant (and on prerelease BIOSes. Although if the issue lies with AMD or The motherboard maker we shall see later.
jbmorgado 10y ago
Isn't the problem with AMD mobos that it's very difficult to find a motherboard manufacturer that supports the ECC? From what I've been reading about the upcoming Ryzen, no motherboard so far claims to support ECC.
- Unklejoe 10y ago
  It has sort of been that way in the past, so I wouldn't be surprised if there were similar issues with Ryzen at first. However, I expect that there will eventually be some workstation grade motherboards from vendors like Supermicro which will be more direct about guaranteeing ECC support. This will be especially true if AMD decides to release some “official” small server grade CPUs on the AM4 socket (kind of like Intel’s Xeon E3 which uses the regular consumer socket, but requires a different chipset). I don’t know if there are any plans for such a CPU from AMD, but it wouldn’t surprise me considering there’s probably some real demand for something a little less expensive and powerful than the 32C/64T Naples server CPU. Rebranding a consumer 8C/16T Ryzen seems like a logical step, with the only cost being validation. The thing to remember is that supporting ECC on an AM4 motherboard basically amounts to running a few extra traces between the CPU and DRAM slots, and adding support in the BIOS to initialize the memory controller properly. My experiencing in implementing boot code to initialize memory controllers leads me to believe that it’s probably one or two days worth of work to actually get it working (once everything else is done). The real cost comes from testing and validation, which is why some manufacturers are so hesitant to give a straight answer regarding ECC support on consumer platforms. There is no point in spending the money to validate a feature that the majority of their customers think is a complete waste. By offering “working but not validated” ECC support, they’re able to satisfy the demand of those who want to use these chips for small non critical servers without undercutting their higher margin server grade components.
- equalunique 10y ago
  Further down in Reddit Comments, this ASRock motherboard is linked to: http://www.asrock.com/mb/AMD/X370%20Killer%20SLIac/index.us.asp#Specification http://www.asrock.com/mb/AMD/X370%20Killer%20SLIac/index.us.... Link on reddit: https://www.reddit.com/r/Amd/comments/5x4hxu/we_are_amd_creators_of_athlon_radeon_and_other/def76ml/ https://www.reddit.com/r/Amd/comments/5x4hxu/we_are_amd_crea...
  - Unklejoe 10y ago
    Thanks! I didn't know the APU supported ECC as well.

BayesStreet 10y ago

For anyone looking at a new AM4 build with high speed memory, be warned that Linus' review stated he could not POST with memory clocked past 2666MHz[0] [0]https://youtu.be/9wJQEHNYE7M?t=4m43s https://youtu.be/9wJQEHNYE7M?t=4m43s

jrockway 10y ago
Is this uncommon? I have a 6950X with some "3200MHz" RAM, and it definitely doesn't work reliably at that speed. Nothing above 2666MHz will pass stress tests, even with conservative timings. Ultimately the memory clock speed doesn't affect performance very much, so I'm not sure it matters.
AlphaSite 10y ago
It's very motherboard dependant (and on prerelease BIOSes. Although if the issue lies with AMD or The motherboard maker we shall see later.

jbmorgado 10y ago

Isn't the problem with AMD mobos that it's very difficult to find a motherboard manufacturer that supports the ECC? From what I've been reading about the upcoming Ryzen, no motherboard so far claims to support ECC.

Unklejoe 10y ago
It has sort of been that way in the past, so I wouldn't be surprised if there were similar issues with Ryzen at first. However, I expect that there will eventually be some workstation grade motherboards from vendors like Supermicro which will be more direct about guaranteeing ECC support. This will be especially true if AMD decides to release some “official” small server grade CPUs on the AM4 socket (kind of like Intel’s Xeon E3 which uses the regular consumer socket, but requires a different chipset). I don’t know if there are any plans for such a CPU from AMD, but it wouldn’t surprise me considering there’s probably some real demand for something a little less expensive and powerful than the 32C/64T Naples server CPU. Rebranding a consumer 8C/16T Ryzen seems like a logical step, with the only cost being validation. The thing to remember is that supporting ECC on an AM4 motherboard basically amounts to running a few extra traces between the CPU and DRAM slots, and adding support in the BIOS to initialize the memory controller properly. My experiencing in implementing boot code to initialize memory controllers leads me to believe that it’s probably one or two days worth of work to actually get it working (once everything else is done). The real cost comes from testing and validation, which is why some manufacturers are so hesitant to give a straight answer regarding ECC support on consumer platforms. There is no point in spending the money to validate a feature that the majority of their customers think is a complete waste. By offering “working but not validated” ECC support, they’re able to satisfy the demand of those who want to use these chips for small non critical servers without undercutting their higher margin server grade components.
equalunique 10y ago
Further down in Reddit Comments, this ASRock motherboard is linked to: http://www.asrock.com/mb/AMD/X370%20Killer%20SLIac/index.us.asp#Specification http://www.asrock.com/mb/AMD/X370%20Killer%20SLIac/index.us.... Link on reddit: https://www.reddit.com/r/Amd/comments/5x4hxu/we_are_amd_creators_of_athlon_radeon_and_other/def76ml/ https://www.reddit.com/r/Amd/comments/5x4hxu/we_are_amd_crea...
- Unklejoe 10y ago
  Thanks! I didn't know the APU supported ECC as well.