X99 Taichi only 48GB detected, 64GB installed
Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=3512
Printed Date: 20 Jul 2025 at 7:17pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: X99 Taichi only 48GB detected, 64GB installed
Posted By: harsham05
Subject: X99 Taichi only 48GB detected, 64GB installed
Date Posted: 30 Sep 2016 at 1:39am
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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!
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Replies:
Posted By: wardog
Date Posted: 30 Sep 2016 at 4:54am
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What is the memory p/n ? |
Posted By: harsham05
Date Posted: 30 Sep 2016 at 5:11am
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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 |
Posted By: parsec
Date Posted: 30 Sep 2016 at 10:07am
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? ------------- http://valid.x86.fr/48rujh" rel="nofollow"> 
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harsham05 wrote:Posted By: p4f
Date Posted: 02 Oct 2016 at 8:48am
Would not help anyway. X99 Taichi is not listed in the Corsair memory finder.
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