ASRock Forums : X99 Taichi only 48GB detected, 64GB installed https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sun, 21 Jun 2026 20:15:00 +0000 Sun, 02 Oct 2016 08:48:04 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=3512 <![CDATA[ASRock Forums]]> https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ <![CDATA[X99 Taichi only 48GB detected, 64GB installed : harsham05 wrote:I made a mistake...]]> https://forum.asrock.com/forum_posts.asp?TID=3512&PID=17391&title=x99-taichi-only-48gb-detected-64gb-installed#17391 Author: p4f
Subject: 3512
Posted: 02 Oct 2016 at 8:48am

Originally posted by harsham05 harsham05 wrote:

I made a mistake of NOT using Corsair memory finder before buying the RAM, for compatibility with X99 Taichi. Looks like its not officially supported. 


Would not help anyway. X99 Taichi is not listed in the Corsair memory finder.


Edited by p4f - 02 Oct 2016 at 8:48am]]> Sun, 02 Oct 2016 08:48:04 +0000 https://forum.asrock.com/forum_posts.asp?TID=3512&PID=17391&title=x99-taichi-only-48gb-detected-64gb-installed#17391 <![CDATA[X99 Taichi only 48GB detected, 64GB installed : harsham05 wrote:I was able...]]> https://forum.asrock.com/forum_posts.asp?TID=3512&PID=17331&title=x99-taichi-only-48gb-detected-64gb-installed#17331 Author: parsec
Subject: 3512
Posted: 30 Sep 2016 at 10:07am

Originally posted by harsham05 harsham05 wrote:

I was able to get all 64GB detected by slowing the CAS latency from C13 to C16   :)

Hopefully Asrock will support C13 in a future BIOS update !!!!

@wardog Corsair CMK64GX4M8A2133C13




Corsair markets that memory as compatible with X99 systems, so it should work with any of them.

The memory controller is part of the CPU, the only thing the board needs is a compatible UEFI/BIOS.

Did you try increasing the DRAM voltage with all that memory? Increasing the VCCIO and VCCSA offset voltages will help with "missing" memory. That's what happens when the memory controller cannot handle the load of all that memory, eight DIMMs is a lot to deal with.

Did you compare the actual DRAM voltage with the UEFI DRAM voltage setting?
]]> Fri, 30 Sep 2016 10:07:14 +0000 https://forum.asrock.com/forum_posts.asp?TID=3512&PID=17331&title=x99-taichi-only-48gb-detected-64gb-installed#17331 <![CDATA[X99 Taichi only 48GB detected, 64GB installed : I was able to get all 64GB detected...]]> https://forum.asrock.com/forum_posts.asp?TID=3512&PID=17321&title=x99-taichi-only-48gb-detected-64gb-installed#17321 Author: harsham05
Subject: 3512
Posted: 30 Sep 2016 at 5:11am

I was able to get all 64GB detected by slowing the CAS latency from C13 to C16   :)

Hopefully Asrock will support C13 in a future BIOS update !!!!

@wardog Corsair CMK64GX4M8A2133C13




Edited by harsham05 - 30 Sep 2016 at 5:12am]]> Fri, 30 Sep 2016 05:11:32 +0000 https://forum.asrock.com/forum_posts.asp?TID=3512&PID=17321&title=x99-taichi-only-48gb-detected-64gb-installed#17321 <![CDATA[X99 Taichi only 48GB detected, 64GB installed : What is the memory p/n ? ]]> https://forum.asrock.com/forum_posts.asp?TID=3512&PID=17320&title=x99-taichi-only-48gb-detected-64gb-installed#17320 Author: wardog
Subject: 3512
Posted: 30 Sep 2016 at 4:54am

What is the memory p/n ?
]]> Fri, 30 Sep 2016 04:54:08 +0000 https://forum.asrock.com/forum_posts.asp?TID=3512&PID=17320&title=x99-taichi-only-48gb-detected-64gb-installed#17320 <![CDATA[X99 Taichi only 48GB detected, 64GB installed : On my X99 Taichi, I have 64 GB...]]> https://forum.asrock.com/forum_posts.asp?TID=3512&PID=17315&title=x99-taichi-only-48gb-detected-64gb-installed#17315 Author: harsham05
Subject: 3512
Posted: 30 Sep 2016 at 1:39am

On my X99 Taichi, I have 64 GB of memory Installed on all 8 slots of the motherboard.

The BIOS detects only 48GB in Tri channel mode. Updating the BIOS to 1.40 detected only 48GB DDR4.

The RAM works fine, I checked each stick of the RAM individually using the same slots on the motherboard (A1-B1-C1-D1).

Is there any BIOS setting that will allow me to detect all 64 GB memory???  Will a future BIOS update detect all 64 GB?

I made a mistake of NOT using Corsair memory finder before buying the RAM, for compatibility with X99 Taichi. Looks like its not officially supported. 

CPU: Intel Core i7 6800K
RAM: Corsair Vengeance LPX 64GB (8 x 8GB) DDR4 DRAM 2133MHz (PC4-17000) C13 


Thank you!
]]> Fri, 30 Sep 2016 01:39:08 +0000 https://forum.asrock.com/forum_posts.asp?TID=3512&PID=17315&title=x99-taichi-only-48gb-detected-64gb-installed#17315