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Dual Channel Memory issues with Z790 Steel Legend

Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: http://forum.asrock.com/forum_posts.asp?TID=25179
Printed Date: 08 Dec 2023 at 9:53am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com


Topic: Dual Channel Memory issues with Z790 Steel Legend
Posted By: plaguedemorte
Subject: Dual Channel Memory issues with Z790 Steel Legend
Date Posted: 08 Dec 2022 at 10:27am
Hi,

I'm having issues with support for Corsair Vengeance DD5 RAM with my Z790 Steel Legend WiFi. I've tried everything at this point. I have the latest (as of today) 4.01 version BIOS released on 2022/12/6. Currently my problem is when I try to run dual channel using the following RAM:

Corsair Vengeance DDR5 64GB (2x32GB) 5200MHz
OR
CORSAIR Vengeance DDR5 32GB (2x16GB) DDR5 5600 (PC5-44800)

I'm trying to just use either pair in dual channel mode. Currently the motherboard downsteps each stick to 3600mhz in single mode. Single mode currently is the only mode that works for me. I've tried slots A1/B1, A2/B2 combinations with no success.

I've been hoping for a BIOS update to fix this but it doesn't seem to work. Anyone encounter this and have any success? I feel like this is compatibility issue at this point.



Replies:
Posted By: plaguedemorte
Date Posted: 08 Dec 2022 at 11:38am
Here is my system information. Currently using i9-13900KF with ASRock Z790 motherboard. RAM is Micron CMK64GX5M2B5200C40 DDR5-5200 (Corsair). Currently I can only get the two sticks to work in single channel mode and not dual channel.



DMI Processor          
     manufacturer          Intel(R) Corporation
     model               13th Gen Intel(R) Core(TM) i9-13900KF
     clock speed          2970.0 MHz
     FSB speed          100.0 MHz
     multiplier          29.5x
     max clock speed          8500.0 MHz

Chipset
-------------------------------------------------------------------------

Northbridge               Intel Raptor Lake rev. 01
Southbridge               Intel Z790 rev. 11
Bus Specification          PCI-Express 5.0 (32.0 GT/s)
Graphic Interface          PCI-Express 4.0
PCI-E Link Width          x16 (max 16x)
PCI-E Link Speed          16.0 GT/s (max 16.0 GT/s)
Memory Type               DDR5
Memory Size               64 GBytes
Channels               2 x 32-bit
Memory Frequency          1795.6 MHz (1:18)
Memory Max Frequency          3733.3 MHz
CAS# latency (CL)          30.0
RAS# to CAS# delay (tRCD)     30
RAS# Precharge (tRP)          30
Cycle Time (tRAS)          57
Bank Cycle Time (tRC)          87
Row Refresh Cycle Time (tRFC)     287
Command Rate (CR)          2T
Uncore Frequency          4588.8 MHz
Memory Controller Frequency     897.8 MHz
Host Bridge               0xA700



DIMM #                    1
     SMBus address          0x50
     Memory type          DDR5
     Module format          UDIMM
     Module Manufacturer(ID)     Corsair (7F7F9E0000000000000000000000)
     SDRAM Manufacturer (ID)     Micron Technology (2C00000000000000000000000000)
     Size               32768 MBytes
     Max bandwidth          DDR5-5200 (2600 MHz)
     Max JEDEC          DDR5-4800 (2400 MHz)
     Channels          2
     Part number          CMK64GX5M2B5200C40
     Manufacturing date     Week 45/Year 22
     Nominal Voltage          1.10 Volts
     EPP               no
     XMP               yes, rev. 3.0
     AMP               no
     EXPO               no
JEDEC timings table          CL-tRCD-tRP-tRAS-tRC @ frequency
     JEDEC #1          22.0-23-23-43-65 @ 1333 MHz
     JEDEC #2          28.0-28-28-54-82 @ 1666 MHz
     JEDEC #3          30.0-30-30-58-88 @ 1800 MHz
     JEDEC #4          32.0-33-33-62-95 @ 1933 MHz
     JEDEC #5          36.0-37-37-70-106 @ 2166 MHz
     JEDEC #6          40.0-40-40-77-117 @ 2400 MHz
     JEDEC #7          42.0-40-40-77-117 @ 2400 MHz
XMP profile               XMP-5200
     Specification          Profile 1
     VDD Voltage          1.250 Volts
     VDDQ Voltage          1.250 Volts
     VPP Voltage          1.800 Volts
     Memory Controller Volt.     1.200 Volts
     Min Cycle time          0.384 ns (2600 MHz)
     Max CL               40.0
     Min tRP               15.36 ns
     Min tRCD          15.36 ns
     Min tRAS          29.57 ns
     Min tRC               44.93 ns
XMP timings table          CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
     XMP #1               22.0-22-22-43-65-n.a @ 1432 MHz (1.250 Volts)
     XMP #2               26.0-26-26-51-77-n.a @ 1692 MHz (1.250 Volts)
     XMP #3               28.0-28-28-54-82-n.a @ 1822 MHz (1.250 Volts)
     XMP #4               30.0-31-31-58-88-n.a @ 1953 MHz (1.250 Volts)
     XMP #5               32.0-33-33-62-94-n.a @ 2083 MHz (1.250 Volts)
     XMP #6               36.0-36-36-70-106-n.a @ 2343 MHz (1.250 Volts)
     XMP #7               40.0-40-40-77-117-n.a @ 2600 MHz (1.250 Volts)
     XMP #8               42.0-40-40-77-117-n.a @ 2600 MHz (1.250 Volts)
     XMP #9               46.0-40-40-77-117-n.a @ 2600 MHz (1.250 Volts)



DIMM #                    2
     SMBus address          0x51
     Memory type          DDR5
     Module format          UDIMM
     Module Manufacturer(ID)     Corsair (7F7F9E0000000000000000000000)
     SDRAM Manufacturer (ID)     Micron Technology (2C00000000000000000000000000)
     Size               32768 MBytes
     Max bandwidth          DDR5-5200 (2600 MHz)
     Max JEDEC          DDR5-4800 (2400 MHz)
     Channels          2
     Part number          CMK64GX5M2B5200C40
     Manufacturing date     Week 45/Year 22
     Nominal Voltage          1.10 Volts
     EPP               no
     XMP               yes, rev. 3.0
     AMP               no
     EXPO               no
JEDEC timings table          CL-tRCD-tRP-tRAS-tRC @ frequency
     JEDEC #1          22.0-23-23-43-65 @ 1333 MHz
     JEDEC #2          28.0-28-28-54-82 @ 1666 MHz
     JEDEC #3          30.0-30-30-58-88 @ 1800 MHz
     JEDEC #4          32.0-33-33-62-95 @ 1933 MHz
     JEDEC #5          36.0-37-37-70-106 @ 2166 MHz
     JEDEC #6          40.0-40-40-77-117 @ 2400 MHz
     JEDEC #7          42.0-40-40-77-117 @ 2400 MHz
XMP profile               XMP-5200
     Specification          Profile 1
     VDD Voltage          1.250 Volts
     VDDQ Voltage          1.250 Volts
     VPP Voltage          1.800 Volts
     Memory Controller Volt.     1.200 Volts
     Min Cycle time          0.384 ns (2600 MHz)
     Max CL               40.0
     Min tRP               15.36 ns
     Min tRCD          15.36 ns
     Min tRAS          29.57 ns
     Min tRC               44.93 ns
XMP timings table          CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
     XMP #1               22.0-22-22-43-65-n.a @ 1432 MHz (1.250 Volts)
     XMP #2               26.0-26-26-51-77-n.a @ 1692 MHz (1.250 Volts)
     XMP #3               28.0-28-28-54-82-n.a @ 1822 MHz (1.250 Volts)
     XMP #4               30.0-31-31-58-88-n.a @ 1953 MHz (1.250 Volts)
     XMP #5               32.0-33-33-62-94-n.a @ 2083 MHz (1.250 Volts)
     XMP #6               36.0-36-36-70-106-n.a @ 2343 MHz (1.250 Volts)
     XMP #7               40.0-40-40-77-117-n.a @ 2600 MHz (1.250 Volts)
     XMP #8               42.0-40-40-77-117-n.a @ 2600 MHz (1.250 Volts)
     XMP #9               46.0-40-40-77-117-n.a @ 2600 MHz (1.250 Volts)


Posted By: savi01
Date Posted: 11 Dec 2022 at 1:30pm
I'm having the same problem, but with GSkill RAM. Individually each stick works in the A2 slot, but using A2/B2 together prevents post'ing. Any update?


Posted By: plaguedemorte
Date Posted: 11 Dec 2022 at 2:51pm
Still having the same issue. Trying to use the RAM in A1,B1 or A2,B2 results in no POST. Using the latest BIOS also v4.01.


Posted By: Militaryfool280
Date Posted: 31 Dec 2022 at 2:48am
Was having the same issues with Corsair's Dominators 32gb..

But placed both in b1 and b2 and got the PC to boot.

When I checked in task manager said that had 32gb of ram available and 2 of 4 channels were in use.


Posted By: plaguedemorte
Date Posted: 31 Dec 2022 at 4:28am
I'm currently using BIOS version 5.02 (2022/12/22) and still experiencing problems.


Posted By: jmcdevi3
Date Posted: 08 Jan 2023 at 3:23am
I?m having the same issue on Z790 PG Riptide, will boot with one stick of Corsair DDR5-5600 in slot B2, or two sticks in B1 and B2 (single channel) but if I put one in A2 and one in B2 it won?t post and the DRAM light is red. After it fails to post and I remove one stick and reboot the speed is dropped to 3600. I?ve updated BiOS to 4.13, and tried with XMP profile enabled.

Seems like a lot of ASRock Z790 boards are having memory issues?

Intel i7-13700KF
Corsair 2 x 16GB DDR5-5600
Z790 PG Riptide


Posted By: Les
Date Posted: 23 Jan 2023 at 3:00am
EXACTLY SAME PROBLEM! on new Z790 Taichi with i5-13600K CPU with both Corsair DDR5-5200 Plat Dom 64GB and Corsair DDR5-5600 Plat Dom 32GB which is brand new.

Nothing will work in A slots whatsoever which means A1-B1 or A2-B2 (Dual Channel) will not work. I can only get all to work in B1-B2 and then can get it to work at proper speed.

I have tried removing and reseating the CPU and also upgrading to latest BIOS.

Very very frustrating and obviously not alone here.

UPDATE: Just tried Kingston Fury 7200 16GB same issue and then moved all over to my other machine and this is not the memories fault.I am also going to believe its not the CPU as there are no CPU error messages and everything works fine (in single mode) with ANY memory in B1-B2.

What kind of a performance hit would that be?

FURTHER UPDATE: Just tried things with my i9-12900K CPU and same problem exists.

THIS IS A MOTHERBOARD ISSUE


Posted By: jmcdevi3
Date Posted: 23 Jan 2023 at 3:41am
Unfortunately, after all known troubleshooting efforts I ultimately RMA?d the Z790 Riptide and got an ASUS board instead, booted up first try with same CPU and RAM in dual channel, no issues.


Posted By: crn1710
Date Posted: 07 Feb 2023 at 12:15am
Just registered to post this:

I've got almost the same issues with the Z790 Steel Legend WiFi.
I can boot into Windows just fine but after ~10 minutes I get constant c0000005 errors with apps and games just exiting to desktop and even BSOD.
Unable to install DirectX Runtimes for some reason.
Unable to install ANY Nvidia driver, old or new.
RAM is 2x G.Skill Trident Z5 RGB (F5-6000J3636F16GX2-TZ5K), which is said to be supported by this MB. So I said ... let's buy 32GB of the same RAM, maybe mine is broken .
Brand new RAM (same make) and guess what - it still doesn't work.
Asrock support told me to RMA to my dealer.
Dealer said it'll take 4-6 weeks and they cannot replace the MB.

Bought an ASUS now. Works like a charm.

No more ASRock for me.


Posted By: th1234
Date Posted: 12 Feb 2023 at 1:15am
I had the same problems as described above, if I used slot A.2 and B.2 the PC didn't boot. It worked in B.1 & B.2 but obviously without Dual Channel.

I changed the XMP profile from auto to the other profile that was listed
I disabled the ASRock DRAM Frequency Optimization (all the way at the bottom in DRAM Timing Configuration)

Now it boots with the RAM in A.2 and B.2 in Dual Channel

ASRock Z790 Steel Legend WiFi (UEFI Version: Z790 Steel Legend WiFi 6.02)
Corsair Vengeance CMK32GX5M2B5600C36 2x16GB



Posted By: Karsomyrr
Date Posted: 26 Feb 2023 at 8:06pm
Any other fixes for this?

I have tried the solution above with bios v.6.02 and v7.04 still wont post with dual channel

Memory is Corsair CMK32GX5M2B5200C40

Still waiting for support response


Posted By: Crizz
Date Posted: 02 Mar 2023 at 4:12am
Hello,

Just registered after finding this topic in Google.
I bought the Z790 Steel Legend WiFi in January 2023, since than I have issues referring to RAM.
Installed where 2 16GB Patriot Memory Viper Venom PVV532G600C36K.
I am getting BSoD with Clock_watchdog_timeout.

I tried everything possible solution found on the internet. I even bought new RAM modules, Trident Z5 to exclude RAM errors, although test said no errors found. Guess what, same issue still present.
I use A2 and B2 as described in the manual as recommended memory configuration.

I am really stating to think, this issue is in the motherboard. I hope ASROCK support can come with a solution.

Regards,
Cris


Posted By: Skid999
Date Posted: 02 Mar 2023 at 6:19am
BIOS update and disabling XMP worked for me.

As soon as XMP is on I get random shut downs at idle and memtest gives pages of errors.

I've tried some BIOS settings but I'm no expert and it's just scrabbling in the dark for something Asrock should have sorted.

-------------
ASRock Z790 ITX WiFi
i5-13600K
2X 32GB G.Skill RipjawS5 F5 5600 CL 36
Asus AP201
Deepcool Gammaxx L360 V2 AIO


Posted By: Baginiak
Date Posted: 02 Mar 2023 at 6:33pm
I have the same, from 32Gb I wanted to replace to 64 Gb. 8 parts of the memory on the motherboard only the left side of the 32 GB works.
Asrock does not know what is going on with their products.


Posted By: banno
Date Posted: 30 Mar 2023 at 2:23am
I have the same issue.

I9 13900KF
Z790 Steel Legend
KF560C36BBEAK2-32
5600J3036D16GX2-RS5K

Tried 2 different RAM kits same issue,
Both work with 1 stick only, soon as i use dual channel I get constant app crashes with errors 0xc0000005

Neither of the ram kits can run close to XMP.
KF560C36BBEAK2-32 which is on QVL list cannot hit XMP target


Posted By: GabrielKD
Date Posted: 30 Mar 2023 at 3:31pm
I9 13900K
Z790 Steel Legend Wifi
Kingston KF556C40BBK2-64 x 2 64GB kit

I got the same issue, DRAM led on, restarts and tries again endlessly.
Managed to get it to boot with 1 stick in A2, upgraded BIOS to the latest version (Z790-Steel-Legend-WiFi_7.04.ROM) to no avail.
Tried disabling ASRock optimizations and choosing XMP1 still to no avail, won't boot with A2-B2 or A1-B1, similarly to single stick in B1 or B2.
Boots fine with 1 stick A2, didn't check A1
Ram is good since I used it and tried it again in an older configuration (a Z690 with 12th gen) with no issues.

Is there no chance to run this?
Is this ram simply not actually working on this card/bios?
What alternatives do I have except returning the MB?
Help!


Posted By: banno
Date Posted: 11 Apr 2023 at 10:58pm
I've tried another motherboard (MSI Z690 Carbon) Same problem, so seems not to be motherboard issue.


Posted By: Xaltar
Date Posted: 12 Apr 2023 at 2:44am
Unfortunately, most of the time when I see this issue it turns out to be the CPU.
The CPU contains the memory controller and they are quite prone to dying and even
be DOA. Dual channel = 2 memory channels and it's quite common for one to be dead
or die, both on AMD and Intel.

To put your mind at ease however, they will almost always be dead on arrival or
die within a very short time (hours to days). It tends to happen when the CPU only
barely passed the testing phase after production.

-------------


Posted By: GabrielKD
Date Posted: 12 Jul 2023 at 4:01pm
It was the CPU for me, returned it and got a replacement and it worked just fine.
I haven't had a CPU issue in forever, not a pleasant experience.


Posted By: Xaltar
Date Posted: 12 Jul 2023 at 4:59pm
Yeah, it's still not very common but it does happen more than it used to. Given
that this is a manufacturer's forum it's not odd that we see it more often here.
Most people immediately suspect the motherboard, which makes sense, some part of
it isn't working right. Not many people are aware that the memory controller is
on the CPU.

-------------


Posted By: Xaltar
Date Posted: 13 Jul 2023 at 12:03am
If you have both RAM modules in the A slots then you are not running in dual channel.
A and B indicate the channels, if you have RAM in A1 and B1 or A2 and B2 then you
are running in dual channel. 2 RAM modules installed does not mean you are running
in dual channel, they must be in the correct slots:

A2 and B2 (recommended) -> Dual channel
A1 and B1 => Dual channel
A1 and B2 => Single channel
A2 and B1 -> Single channel
A1 and A2 -> Single channel
B1 and B2 -> Single channel

The confusion is caused by how DDR5 works. As far as I understand it, DDR5 modules
function as if they are 2 modules in one (ie, Dual channel). If the information
I have been looking at is correct that means that dual channel is actually quad
channel with DDR5. This is irrelevant when it comes to performance however because
regardless of it being "dual channel" you are still losing half your bandwidth
with both modules in the A channel. Once 3rd party monitoring apps are updated
for the new standard properly it will stop being reported as dual channel with
a single module or both modules in a single channel.

The TLDR is that you should return your CPU if you are unable to get the RAM
to work properly in slots A2 and B2 or A1 and B1. That is a strong indication of
a weak or even bad memory controller on the CPU.

I hope this makes sense.

-------------



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