QUOTE(CAL V @ Jul 9 2020, 06:12 PM)
I tried applying VSoC 1.15v, VDDG 1.05v, VDDP 0.925v. Still doesn't boot.
I did try something I found online to enable LN2 mode under AMD overclocking, and then go back to set 1900 FCLK in bios, everything else auto including ram. It did boot into Windows after some struggle, but in Windows, the fabric clock was fluctuating at around 1200 FCLK only. Unfortunately the guy only mentioned good luck stabilising FCLK from there and nothing else
Maybe I'll just go back and play with 1867 (3733), it was spitting error at 3733 16-16-16-32 @ 1.42v, maybe I'll try bumping up the voltage little by little. Dram calculator suggested up to 1.48v
Dont put vSoC at 1.15V. You put 1.1V also good enough already. You might need to up your VDDP to 1V . Dont use that LN2 mode.I did try something I found online to enable LN2 mode under AMD overclocking, and then go back to set 1900 FCLK in bios, everything else auto including ram. It did boot into Windows after some struggle, but in Windows, the fabric clock was fluctuating at around 1200 FCLK only. Unfortunately the guy only mentioned good luck stabilising FCLK from there and nothing else
Maybe I'll just go back and play with 1867 (3733), it was spitting error at 3733 16-16-16-32 @ 1.42v, maybe I'll try bumping up the voltage little by little. Dram calculator suggested up to 1.48v
In your BIOS, there is 1 option call UCLK DIV1 MODE, you set UCLK==MEMCLK .
FCLK put 1900Mhz. RAM set to 3800Mhz , but you need to loosen your timings or up your VDIMM. From my experience , if you wanna do CL14 at 3800Mhz with a Samsung B-die, you need 1.5VDIMM and enable GearDownMode. And TRCD I cannot make it fully stable at 14 neither, I can do 15 only for 100% stable.
I think you are overly conservative with your memory voltage.
This post has been edited by k!nex: Jul 14 2020, 11:40 PM
Jul 14 2020, 11:32 PM

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