ASRock Forums : X299 OC RDIMM https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Thu, 09 Apr 2026 22:10:00 +0000 Sat, 24 Feb 2018 02:46:56 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=7791 <![CDATA[ASRock Forums]]> https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ <![CDATA[X299 OC RDIMM : Hey! Thanks for all your help!...]]> https://forum.asrock.com/forum_posts.asp?TID=7791&PID=45788&title=x299-oc-rdimm#45788 Author: haskellcurrying
Subject: 7791
Posted: 24 Feb 2018 at 2:46am

Hey!

Thanks for all your help! I'm not crazy worried about performance as much as I am worried about ram scalability. I'm not gaming or mining, but rather I am using this for deep learning/compute/blah blah blah. In that space 64gb, maybe 128GB if the density goes up and I re-buy a full kit doesn't leave much headroom.

I currently have 2 x 64gb 2400Mhz Samsung made/branded LRDIMMs (M393A8K40B21-CTC) and plan on doubling that moving forward.

As for ECC, while I know the i9 doesn't boot ECC, it would appear that the X299 OC (like many other boards) simply boots the RAM with ECC disabled:

1. CT8G4RFS4213 (4GA72D9RGV)
2. CT8G4RFS4213 (4GA12D9RGV)

Are both listed as supported by the x299 OC and are both Registered ECC modules (RDIMMs).


Edited by haskellcurrying - 24 Feb 2018 at 5:37am]]> Sat, 24 Feb 2018 02:46:56 +0000 https://forum.asrock.com/forum_posts.asp?TID=7791&PID=45788&title=x299-oc-rdimm#45788 <![CDATA[X299 OC RDIMM : Too, I just looked. Your 7980XE...]]> https://forum.asrock.com/forum_posts.asp?TID=7791&PID=45738&title=x299-oc-rdimm#45738 Author: wardog
Subject: 7791
Posted: 23 Feb 2018 at 11:22am

Too, I just looked. Your 7980XE doesn't support ECC mem.

What's the P/N of the Kit/sticks of RDIMM you have there?
]]> Fri, 23 Feb 2018 11:22:19 +0000 https://forum.asrock.com/forum_posts.asp?TID=7791&PID=45738&title=x299-oc-rdimm#45738 <![CDATA[X299 OC RDIMM : Let me email the Techs and ask.I...]]> https://forum.asrock.com/forum_posts.asp?TID=7791&PID=45737&title=x299-oc-rdimm#45737 Author: wardog
Subject: 7791
Posted: 23 Feb 2018 at 11:19am

Let me email the Techs and ask.

I doubt it though. Why? Yea, I read your 5 x8 slots but that still leave me asking why.

Registered mem is slower, so unless you have an actual need, which I highly doubt, why cripple that XE proc with it.

Hang tight.


Edited by wardog - 23 Feb 2018 at 11:22am]]> Fri, 23 Feb 2018 11:19:15 +0000 https://forum.asrock.com/forum_posts.asp?TID=7791&PID=45737&title=x299-oc-rdimm#45737 <![CDATA[X299 OC RDIMM : I&#039;m looking at the x299 OC...]]> https://forum.asrock.com/forum_posts.asp?TID=7791&PID=45733&title=x299-oc-rdimm#45733 Author: haskellcurrying
Subject: 7791
Posted: 23 Feb 2018 at 9:29am

I'm looking at the x299 OC because its got five electrically wired x8 slot to the CPU. Such a rad board!

I've got some ECC RDIMMs (I know i9 don't support ECC, but I don't mind having it simply be disable) i wanted to use in conjunction with it and the 7980XE. While digging through the specs I noticed that the x299 OC is the only x299 board that ASRock sells without RDIMM support listed on the tin. Is that a clerical error? Or is that an OC related design choice? Does the board quietly/unofficially support RDIMM?

Thanks all!
]]> Fri, 23 Feb 2018 09:29:01 +0000 https://forum.asrock.com/forum_posts.asp?TID=7791&PID=45733&title=x299-oc-rdimm#45733