Intel Motherboards - Interoperability of z390 & 4x32GB ECC Udimm's

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Interoperability of z390 & 4x32GB ECC Udimm's

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=18041
Printed Date: 07 Jul 2025 at 1:42am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: Interoperability of z390 & 4x32GB ECC Udimm's

Posted By: vbzverev
Subject: Interoperability of z390 & 4x32GB ECC Udimm's
Date Posted: 07 Feb 2021 at 5:43am

Hi AsARocks!
I'm stuck with interoperability puzzle about trivial (at fisrt glance) config:

1) ASRock Z390 Phantom Gaming 4
2) Intel 9600k
3) 4 x Samsung M391A4G43AB1-CVF (ECC Unbuffered DIMM, 32GB)

Config works like a charm in cases:
1) 1 DIMM in SLOT B2
2) 2 DIMMs in SLOT B2,A2

all DIMMs where tested in B2 succesfully, but:

Config don't work at all in cases:
1) 2 DIMMs in SLOT B1, B2
2) 2 DIMMs in SLOT A1, A2
3) 4 DIMMs

Thanks in advance for any advises about trobleshoting in such cases.

WBR,

Vitaly

Replies:

Posted By: vbzverev
Date Posted: 08 Feb 2021 at 1:04am

Puzzle was sovled by downsh*ting to 2666.
Thanks for watching :)