4650G FCLK Overclocking [EN]

[ZTb]

I've recently bought Ryzen 4650G for memory overclocking.
My mobo - MSI X570 Unify.
I can't boot up system with MCLK higher than 4266MHz (FCLK = 2133MHz) with 1:1 multiplier. 4800MHz with 2:1 works perfect, but 4333 1:1 don't even POST.
I've tried different memory kits (Rev. E, CJR, B-Die), SoC/NB voltage up to 1.3v, different bios versions, but that all don't works.
What can help to run 2166+ FCLK?

 

[Oldironsides220]

Maby it's just the End of the FCLK .... 🤷‍♂️

So, be happy with that .... all non-G-Models can't run over 1900 FCLK

 

[KurzGedacht]

What can help to run 2166+ FCLK?

To be fair: 2133 FCLK is already VERY high. What exactly makes you believe that the memory controller might be able to handle more?

 

[ZTb]

Regular frequency limit for 4000G CPU's FCLK is about 2300MHz, so I very disappointed the 2133MHz...

 

[L!ME]

I Had the Same Problems with dual Rank . I solved it with bclk 105.
When you have it with SR then try different BIOS versions

 

[ZTb]

I tried three different versions. All memory is SR. Will try 1-2 other bios versions tomorrow.