Help! G .skill 48GB 8000 stable parameters

[darkiria]

CPU i9-13900Kf (SP 96)
RAM G .skill 48GB 8000
MB ROG MAXIMUS Z790 APEX (BIOS 2202)
XMP1 and XMP2 are less stable
For example: Battlefield 2024 and Cyberpunk 2077 will all crash~
I am not a person who is good at BIOS field and testing stability with software.
I hope you can help provide a rough setting direction so that I can use the 8000 frequency stably.

[Silent_Scone]

Hi @darkiria 

Is the system stable at Optimised Defaults?

You can try the DIMM Flex profiles under AI Tweaker > DIMM Flex > DIMM Flex Profiles. Select the 2x24GB m-die profile and then manually set DRAM Frequency under AI Tweaker to 8000MT.

See if this yields better results. It's a more aggressive profile, but it elevates some of the associated voltages which may aid your CPU sample.

[darkiria]

非常感謝Silent_Scone的幫助和指導~我真的不知道這個設定方法~我真的是一個新手~我只能看一些VDD和VDDQ的電壓調整~我會在我使用的時候隨時提供你的調整建議回家！

[darkiria]

Unfortunately ~ the old version of APEX does not seem to support DIMM FLEX
And the 8,000 set seems to be no longer among them~~
https://www.asus.com/microsite/motherboard/dimm-flex-qvl-list/
Is there any other way to adjust it?

[Silent_Scone]

Apologies, I didn't spot which board you were on.

Try the following:

1. Clear CMOS

2. Set XMP II

3.AI Tweaker > VDD & VDDQ between 1.4 and 1.45v

4. AI Tweaker > Advanced Memory Voltages > Set MCVDD 1.45

If above doesn't aid stability:

AI Tweaker > DRAM Timing Configuration > Maximus Tweak Modes > Tweak Mode 2

[darkiria]

Thank you for your reply~ It is still not stable according to the above settings~ I simply test whether cyberpunk 2077 crashes when executing and make a simple judgment~ The optimized default is no problem~ But the current frequency of 8000 will continue to crash~ Still Is there any solution?
I even looked up a lot of related discussions on voltage adjustment~I never got a good improvement~~It's very painful...

[Silent_Scone]

Hi @darkiria 
Go to Extreme Tweaker > AI Features and run the MC SP test. The system will then reboot and conduct a short test. Once complete, renter the UEFI and navigate back to the AI Features menu. Report back here with the score given.

[darkiria]

renter the UEFI I don't understand this~Sorry

[Rodine]

UEFI = BIOS 

He wanted you to run the MC SP  (Memory Controller Silicone Predictor) test.. which would give us an idea of the quality of the memory controller on your CPU. 

[darkiria]

Currently set to XMP1 full default
Lower the frequency from 8000 to 7000 and everything is stable
The game does not crash~~The AIDA64 baking machine does not report any errors~~
Am I unable to stabilize at 8000 frequency due to CPU IMC constitution?