QUOTE(JohnLai @ Jan 10 2021, 08:07 PM)
Hmm...even IF clock at 1833Mhz also can't boot just now.
~.~
Anyway, the max RAM frequency I can reach is 4.2Ghz

for my 4DIMMs , bootable into windows and seems to stable after 10 - 15 minutes of testing (Prime95 with blend test) using same timing.
No WHEA at event viewer.
Can't boot with 4.3Ghz.
Edit:
Question, why is CPUZ showing FSB:DRAM = 3:54 while RyzenMaster is showing Memory Clock 1800 (corresponding to my 3600Mhz at double data rate) and Fabric Clock 1800?

Ram speed dont really matter that much, the FCLK is more important.. in fact if the fclk is too low then the overall performance will be affected.
FSB is not FCLK, mine is 1:1 to the FCLK but it shows 3:54 because the FSB is always 100Mhz.
Overclocking the FCLK depends on lottery. the 2000mhz FCLK on the zen3 is a maximum but not guaranteed. iinm 1800mhz is the guaranteed number on zen3.
plus in most cases, you may need to pump more voltage to the other voltage settings (although most bios does this automatically but very poorly) which will cause your CPU to run hotter than it already is.
you dont use prime95 to test memory, memtest86 at least overnight or 10 hours is what needed to be done... especially for 32GB as a single pass will take very long. 64GB even worse.
This post has been edited by Bonchi: Jan 10 2021, 09:25 PM