Rebooting problem with Asrock X570 Taichi

I don't have this issue with latest BIOS anymore. Using stock XMP settings.

I think I found a way to make it work. The key was DRAM voltage. I raised it to 1.375 V, and it worked.

Got it, thanks. I also found explicit "SOC voltage" setting in AMD overclocking submenue. It also has VDDG / VDDP voltages, that Ryzen DRAM calculator says to set. I tried that, but I still get reboots. So possibly my CPU doesn't have memory controller strong enough to handle 4 RAM sticks and full load on 3600 MHz, or RAM itself is somehow faulty? I'll run more RAM tests.

shmerl wrote: I looked at it already actually. Please see the above question. The calculator only mentions "SOC voltage". Asrock X570 Taichi has 3 SOC voltages...

VDD_SOC -> Cannot find that, typo or since newest bios?
CPU VDDCR_SOC -> This is the SOC voltage like for former Ryzens
PREM VDDCR_SOC -> This is new for me, i would leave it on auto
Watch it, if you changed VDDCR_SOC (after restart into bios)

most of us tweakers (and early adopters of ryzens ) had to manually adjust timings primary and secondary and other little bios tweaks on the boards

it was a pain to try and test and change

and then .......... like a vision from heaven .along came a guy called yuri
internet nickname is 1usmus
he wrote a program to do this for us !

it is called
the ryzen dram calculator, hell even youtube tech channels are using it now (and these guys do know a thing or two about tuning ram)
you basically fire up your system run the program ,tell it to read your ram sticks info and then it spits out the suggested ALTERNATE settings to make it run on ryzen platform
then print it off , or take a picture of the screen with your phone, reboot into bios and manually enter the numbers in the matching section

your looking for 'ryzen dram calculator'
safest trusted download place would be website called
techpowerup

instructions and videos guides etc can be found on overclock.net

the program has the option to select your cpu type e.g. ryzen gen1 gen2 or gen3
and also to note enter the fact its got 4 dim's (sticks) as this will account for the extra load on cpu controller and make it a little less aggressive with the suggested timings