https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Thu, 16 Apr 2026 14:52:00 +0000 Fri, 20 Jan 2023 01:36:47 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=15485 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=15485&PID=103005&title=x399m-more-than-64gb-of-ram#103005 Author: SerchTech
Subject: 15485
Posted: 20 Jan 2023 at 1:36am

czfz wrote: Yes, and it happened exactly after my request - in their answer they notified me that they had updated characteristics on the website. There was something weird in their response, however... When using four memory modules on the system, it is required to use modules that comes from the same package. Otherwise, modules from different packages, even they have the same part number, will not work properly. We suggest you using modules that comes with 4pcs/package. I guess I'll just give it a shot anyway. I'm not really into the idea of buying a 4pcs set and selling the existing modules. Hope that adding another 2pcs set's going to work just fine...

It is not weird, it is the expected response from any motherboard technical support and the most consistent.

I'm using 2 x HX432C16FB3K2/32 (2 x 2pcs) without problem and surely many users have added more modules in 1 or 2pcs format added to those already successfully installed but there may also be incompatibility problems even if it is the same brand and part number.

For this reason it is highly recommended to buy 2pcs brand new with possible return in case of problems after testing.

If everything goes well, all that remains is to enjoy.

]]> Fri, 20 Jan 2023 01:36:47 +0000 https://forum.asrock.com/forum_posts.asp?TID=15485&PID=103005&title=x399m-more-than-64gb-of-ram#103005 https://forum.asrock.com/forum_posts.asp?TID=15485&PID=102993&title=x399m-more-than-64gb-of-ram#102993 Author: czfz
Subject: 15485
Posted: 19 Jan 2023 at 2:17pm

Yes, and it happened exactly after my request - in their answer they notified me that they had updated characteristics on the website.
There was something weird in their response, however...

When using four memory modules on the system, it is required to use modules that comes from the same package. Otherwise, modules from different packages, even they have the same part number, will not work properly. We suggest you using modules that comes with 4pcs/package.

I guess I'll just give it a shot anyway. I'm not really into the idea of buying a 4pcs set and selling the existing modules. Hope that adding another 2pcs set's going to work just fine...]]> Thu, 19 Jan 2023 14:17:33 +0000 https://forum.asrock.com/forum_posts.asp?TID=15485&PID=102993&title=x399m-more-than-64gb-of-ram#102993 https://forum.asrock.com/forum_posts.asp?TID=15485&PID=102988&title=x399m-more-than-64gb-of-ram#102988 Author: SerchTech
Subject: 15485
Posted: 19 Jan 2023 at 4:47am

Seems ASRock recently updated the official web page support of X399M Taichi, "now" up to 128GB DRAM support ....]]> Thu, 19 Jan 2023 04:47:06 +0000 https://forum.asrock.com/forum_posts.asp?TID=15485&PID=102988&title=x399m-more-than-64gb-of-ram#102988 https://forum.asrock.com/forum_posts.asp?TID=15485&PID=102895&title=x399m-more-than-64gb-of-ram#102895 Author: czfz
Subject: 15485
Posted: 14 Jan 2023 at 10:28pm

eccential, SerchTech, thank you for your suggestions!
SerchTech, I think your first assumption is correct, and the difference in specifications is due to the fact that X399 has 8 RAM slots while X399M has just 4 of them.
However, I'll take your advice and try ASRock support to be 100% sure.]]> Sat, 14 Jan 2023 22:28:16 +0000 https://forum.asrock.com/forum_posts.asp?TID=15485&PID=102895&title=x399m-more-than-64gb-of-ram#102895 https://forum.asrock.com/forum_posts.asp?TID=15485&PID=102810&title=x399m-more-than-64gb-of-ram#102810 Author: SerchTech
Subject: 15485
Posted: 09 Jan 2023 at 6:18am

EDIT: Looking for X399M Taichi in the official web page support I have seen that max DDR4 total capacity support is 64GB, I assumed it was the same specification as my X399 Taichi no M, my bad.

My previous post is based in a wrong assumption and now so I would recommend you to open an ASRock support ticket for a safe response

https://event.asrock.com/tsd.asp


Good luck]]> Mon, 09 Jan 2023 06:18:36 +0000 https://forum.asrock.com/forum_posts.asp?TID=15485&PID=102810&title=x399m-more-than-64gb-of-ram#102810 https://forum.asrock.com/forum_posts.asp?TID=15485&PID=102808&title=x399m-more-than-64gb-of-ram#102808 Author: SerchTech
Subject: 15485
Posted: 09 Jan 2023 at 4:21am

Hi

There is no reason to think that one more KF426C15RBK2/64 won't work with your X399M Taichi because:

1 - X399M Taichi DIMMs supports 32GB size DDR4 modules and total capacity up to 128GB
2 - You will install same brand and part number
3 - Kingston is one of the most reliable DRAM makers for 1st and 2nd Ryzen Gen

Currently I'm using 2 x HX432C16FB3K2/32 (64GB) and I couldn't be more satisfied, also used 4 x HX424C15FB/16 successful.

I would recommend you buy KF426C15RBK2/64 new with possibility of return in the rare case of incompatibility.


Best regards]]> Mon, 09 Jan 2023 04:21:01 +0000 https://forum.asrock.com/forum_posts.asp?TID=15485&PID=102808&title=x399m-more-than-64gb-of-ram#102808 https://forum.asrock.com/forum_posts.asp?TID=15485&PID=102800&title=x399m-more-than-64gb-of-ram#102800 Author: eccential
Subject: 15485
Posted: 08 Jan 2023 at 8:51pm

Well, I own Fatal1ty X470 ITX/ac, and Asrock specs page for the model says, "Max. capacity of system memory: 32GB." But I'm running my 2700X just fine with 64GB (2x32GB). I think the largest available DIMMs when Asrock released the board was 16GB, and the board only has 2 DIMM slots (ITX) so they listed 32GB max, but since then, we got 32GB DIMMs, and really, it's not board's issue anyway. As long as CPU's memory controller and firmware support bigger DIMMs, it's a non-issue.

So my guess is, it will work fine. But I don't own the same thing you own, so....
]]> Sun, 08 Jan 2023 20:51:06 +0000 https://forum.asrock.com/forum_posts.asp?TID=15485&PID=102800&title=x399m-more-than-64gb-of-ram#102800 https://forum.asrock.com/forum_posts.asp?TID=15485&PID=102779&title=x399m-more-than-64gb-of-ram#102779 Author: czfz
Subject: 15485
Posted: 07 Jan 2023 at 5:16pm

Hello everyone!
Sorry for bringing the topic back from the dead... but I got the very same question: I have X399M Taichi MoBo (with a Threadripper 1920X), and recently I've thrown in 2x32 Gb modules of Kingston Fury Renegade DDR4 2666 MHz (KF426C15RBK2/64) - everything works perfectly fine, and there are two empty slots left. So I wonder whether I can add two more modules (the same ones) - or it won't work.
I'd really appreciate some clarification on this...]]> Sat, 07 Jan 2023 17:16:14 +0000 https://forum.asrock.com/forum_posts.asp?TID=15485&PID=102779&title=x399m-more-than-64gb-of-ram#102779 https://forum.asrock.com/forum_posts.asp?TID=15485&PID=78435&title=x399m-more-than-64gb-of-ram#78435 Author: MrWavel
Subject: 15485
Posted: 23 Aug 2020 at 8:59am

Whoa, lost my thoughts here. The main question is...


... now, in 2020, the x399m supports 128fb ddr4 ?

Thanks.]]> Sun, 23 Aug 2020 08:59:12 +0000 https://forum.asrock.com/forum_posts.asp?TID=15485&PID=78435&title=x399m-more-than-64gb-of-ram#78435 https://forum.asrock.com/forum_posts.asp?TID=15485&PID=78432&title=x399m-more-than-64gb-of-ram#78432 Author: MrWavel
Subject: 15485
Posted: 23 Aug 2020 at 8:35am



That's the img.]]> Sun, 23 Aug 2020 08:35:53 +0000 https://forum.asrock.com/forum_posts.asp?TID=15485&PID=78432&title=x399m-more-than-64gb-of-ram#78432