From https://www.overclock.net/threads/o...memory-stability-thread.1628751/post-28680932 VDDP + x = VDDG +x = VSOC x always has to stay the same voltage stepping or a multiple of it Zen 3 likes 40mV as stepping you can use 2*40mV, 3*40mV and so on As long as this scaling exists it will not have random crash-errors This was since Matisse the case an still exists - just this time it's 40mV not 50mV minimum scaling

From https://www.overclock.net/threads/o...memory-stability-thread.1628751/post-28681050 Old Matisse days i kept recommending double stepping for VDDP-VDDG and double stepping or SOC, although only because you couln't expect 1v SOC to run 1900. Today, it's rather single stepping for VDDP->VDDG CCD, double stepping for IOD and then another double for SOCThe limits on CCD (1050) IOD (1150) i would continue to hold VDDP beyond 1050 is damaging, CCD might be pushed to 1100 but already beyond 980mV I saw issues with it IOD beyond 1100 is already too much for this already vintage 12nm I/O-Die

The config I was running without ANY problem with both Ryzen 3000/5000. Lower SOC because here works for 3733MHz, YMWV!

Ryzen 3000 likes voltages steps of 50mV or multiples cLDO VDDP Voltage = 0.900 VDDG CCD Voltage = 1.000(0.900+0.050+0.050) VDDG IOD Voltage = 1.000(0.900+0.050+0.050) SOC_____Voltage = 1.050(1.000+0.050)

Ryzen 5000 minimal voltages steps of 40mV or multiples cLDO VDDP Voltage = 0.900 (more than enought for 3733MHz) VDDG CCD Voltage = 0.940 (seems not to like more than 0.940) VDDG IOD Voltage = 1.020(0.900+0.040+0.040+0.040) SOC_____Voltage = 1.1 The latest BIOS likes more voltage for SOC

BTW, here I placed the case top fans throwing air at the RAM sticks and before any test I set the RPM to 100% or the sticks will get *HOT*. If they get too hot they will generate errors...

YMWV