Having issues with DDR5 for 9800X3D

mmozzano

mmozzano

mmozzano

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Got my 9800X3D last week, installed it into an Asus Tuf B650 board with 2 x 32Gb Corsair Vengance DDR5 6000Mhz, CL30. Machine was rock solid from the outset and remained so for nearly a week. Yesterday evening out of the blue it started shutting off at fairly random times, when it restarted it did the memory training again so I suspect a memory issue. Looking on the Asus memory compatibility list it didnt look like these sticks in the 32Gb variant were on there (CMK64GX5M2B6000Z30). Just ordered some slower 5600, CL40 which is on the compatability list so hoping that'll at least be stable.

What motherboard/memory configurations do others have with the 9800X3D? Am I leaving a lot of performance on the table with this memory?


​

 
Could just try running the current stuff at slower speeds and see if that helps stability.

I had similar issues despite completely different hardware (see sig). Started off with 2x16GB which was fine at 6000, and adding a second pair seemed to work ok initially. Started getting BSODs and ended up reducing speed for the sake of stability. Think it's at 5200 now and rock solid, can't be arsed tweaking it for the sake of a few more MHz.
 
I did try switching off the EXPO (or whatever they call it) memory overclock in the BIOS to run it at 4800Mhz, it still crashed.

I also was going to get the Tomahawk but found the Tuf X650 board so cheap I couldnt resist. Kinda regretting that decision now!

I might try with this slower memory when it arrives and if its no good I'll I'll return it and the motherboard for something a bit hgher spec'ed.
 
mmozzano said:
I did try switching off the EXPO (or whatever they call it) memory overclock in the BIOS to run it at 4800Mhz, it still crashed.

I also was going to get the Tomahawk but found the Tuf X650 board so cheap I couldnt resist. Kinda regretting that decision now!

I might try with this slower memory when it arrives and if its no good I'll I'll return it and the motherboard for something a bit hgher spec'ed.
Click to expand...
Why don't you just set the 6000CL30 RAM to a lower EXPO profile? You should be able to choose a slower speed.

Also, update your BIOS if you haven't already and make sure that your voltages are correct.
 
It's not something I've ever done in the past, I'm not into tweaking so generally run things at stock. I'm not really sure how to go about tweaking the timing but I could certainly have a look.

The bios is the latest available, I updated it when I set it up last week.
 
mmozzano said:
It's not something I've ever done in the past, I'm not into tweaking so generally run things at stock. I'm not really sure how to go about tweaking the timing but I could certainly have a look.

The bios is the latest available, I updated it when I set it up last week.
Click to expand...
Run CPU-z and see what voltages your RAM and CPU are at - you can post a printscreen of CPU-z here if you want.

Manually setting the SOC voltage could be useful at getting the RAM stable.
 
mmozzano said:
Got my 9800X3D last week, installed it into an Asus Tuf B650 board with 2 x 32Gb Corsair Vengance DDR5 6000Mhz, CL30. Machine was rock solid from the outset and remained so for nearly a week. Yesterday evening out of the blue it started shutting off at fairly random times, when it restarted it did the memory training again so I suspect a memory issue. Looking on the Asus memory compatibility list it didnt look like these sticks in the 32Gb variant were on there (CMK64GX5M2B6000Z30). Just ordered some slower 5600, CL40 which is on the compatability list so hoping that'll at least be stable.

What motherboard/memory configurations do others have with the 9800X3D? Am I leaving a lot of performance on the table with this memory?


​

Click to expand...
I'm running this kit in an MSI x870e Carbon Wifi board with my 9800X3D and it's been fine. Had it for less than a week though so there's still time for it to explode I guess... :p

www.overclockers.co.uk

Corsair Vengeance EXPO RGB 64GB (2X32GB) DDR5 PC5-48000C30 6000MHz Dual Channel Kit

Order Corsair Vengeance EXPO RGB 64GB (2X32GB) DDR5 PC5-48000C30 6000MHz Dual Channel Kit now online and benefit from fast delivery.
www.overclockers.co.uk www.overclockers.co.uk
 
Screenshots of CPU and memory from CPU-Z...
4.png

3.png

2.png


Any suggestions on what I could try to change to increase stability would be appreciated!

Quick update: at the above setting when running MemTest64 the machine resets after 30 seconds or so.

I switched off EXPO and managed to get through a single pass of MemTest64 before cancelling it though I'm pretty sure last night it reset during normal usage with EXPO disabled. The setting with EXPO disabled are:

5.png
 
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Voltage set?

For ddr4, I would load xmp, set voltage and dial down the freq.

When OCing, the opposite, usually up the 1.2v low clock stuff to 1.35, xmp and the dial up the freq till unstable.
 
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mmozzano said:
Screenshots of CPU and memory from CPU-Z...
4.png

3.png

2.png

Any suggestions on what I could try to change to increase stability would be appreciated!

Quick update: at the above setting when running MemTest64 the machine resets after 30 seconds or so.

I switched off EXPO and managed to get through a single pass of MemTest64 before cancelling it though I'm pretty sure last night it reset during normal usage with EXPO disabled. The setting with EXPO disabled are:
5.png
Click to expand...
CPU-Z is not ideal to get the help you may need.

Screenshot of ZenTimings be better.

** edit **

Defo got SK Hynix from what CPU-Z is showing.

Thaiphoon burner can show you RAM IC Die version or check the "ver" on label stuck to heatspreader of RAM.

V3.XX.XX: Micron-based ICs
V4.XX.XX: Samsung-based ICs
V5.XX.XX: Hynix-based ICs

Last two digits represent what die is used. A = 01, as A is 1st letter of alphabet, M = 13.
 
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Been building and using PCs for 30 years and all this is brand new to me :cry:

Zentiming screenshot with EXPO disabled but I've manally upped the DRAM frequency in the BIOS from 2400 to 2800, still seems stable after a very quick memory test...

zen.png


Given the above, should I enable EXPO and then just start manually reducing the frequency a step at a time?
 
Ascendancy said:
Perhaps try Memtest86 booted off a USB stick to rule out any possible Windows issues?
Click to expand...
Thats something I was thinking. This is an old Win10 install upgraded a few months back to Win11. Perhaps a fresh Windows install would be a good idea. I'll get Memtest installed onto a USB stick and give it a run.
 
Well I just finished a single pass of memtest86 off usb with EXPO enabled with no errors so perhaps before delving more into hardware tuning I do need to do a fresh install! That sounds like a tomorrow job though :D

Thanks for all your help so far, its much appreciated.
 
mmozzano said:
Zentiming screenshot with EXPO disabled but I've manally upped the DRAM frequency in the BIOS from 2400 to 2800, still seems stable after a very quick memory test...



Given the above, should I enable EXPO and then just start manually reducing the frequency a step at a time?
Click to expand...
Yeah. 5600 (2800 Mhz) is the limit of what I'd try to run at stock voltage.
 
I had some memory problems on my new build. Asus board too and for me what fixed it was setting UCLK=MEMCLK in the bios. Auto was doing the same thing as far as I could tell but setting it manually with expo enabled made it solid.
 
I did a re-install of Win11 last night and things seem to be stable, for now at least. Ran a few passes of Aida64 Stability test and left Satisfactory running for an hour or so and the PC didnt reset. I'll have to see how it goes as it was stable all last week until it started playing up a day or two ago. Fingers crossed, if not I'll continue to look at memory tweaking.
 
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