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Taichi Razer z690 RAM Slot Issues

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Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
Printed Date: 17 Jul 2024 at 12:32am
Software Version: Web Wiz Forums 12.04 -

Topic: Taichi Razer z690 RAM Slot Issues
Posted By: twisted
Subject: Taichi Razer z690 RAM Slot Issues
Date Posted: 02 Jul 2023 at 2:40am
As stated having these issues on the Taichi z690 (basically z690 Taichi Carrera)
F5-6400J3239G32GX2-TZ5RK is the RAM kit I have.

G.SKILL Trident Z5 RGB Series 64GB (2 x 32GB) 288-Pin PC RAM DDR5 6400 (PC5 51200) Desktop Memory Model F5-6400J3239G32GX2-TZ5R

It only trains and works in slots 1&3. In 2&4 it will boot but will not train and instantly crashes anything that tries to use the RAM. I verified this all with MEMTEST as well, it only passes with this kit in slots 1&3, not 2&4. This is confusing because the manual states that slots 2&4 are preferred for dual-channel configurations.

Any one have any idea why?

Posted By: Xaltar
Date Posted: 02 Jul 2023 at 6:31am
Could be a faulty memory channel on the CPU. If you have any other RAM to verify
with (in slots 2 and 4) it would help rule out a compatibility issue. I don't see
how it could be incompatible RAM though if it's working as it should in slots 1 and 3.

It may be worth trying a BIOS update if one is available that is newer than your
current version. Failing that, I would RMA that CPU just to be on the safe side
and rule out a marginal/bad IMC on the CPU.


Posted By: twisted
Date Posted: 02 Jul 2023 at 6:37am
It turns out the ram for some reason isn't fully compatible. I tried this kit since microcenter nearby had it and corsair listed it as compatible for the Taichi z690 even though ASROCK doesn't." rel="nofollow - (2-x-32gb)-ddr5-5200-pc5-41600-cl40-dual-channel-desktop-memory-kit-cmt64gx5m2b5200-black

And it worked in slots 2&4, passed memtest and no crashes in games or apps.

My only guess is the ram was running in some weird single channel mode in 1&3?
It's really weird that it passed test in only those slots.

Would be nice to get some feedback from ASROCK about this.

Posted By: twisted
Date Posted: 02 Jul 2023 at 6:39am
I'd also add now that I think about it, it kept retraining every time I booted up.

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