Asus X570 Prime Pro voltage and other issues

FCs · August 25, 2019

my specs:

Asus X570 Prime Pro /bios:1005/
Ryzen 3700x
Noctua NH-U14S
Corsair Vengeance RGB 3333mhz 2x16Gb
Samsung 970 EVO Plus 500Gb, 2x3Tb WD Red /raid1/
Asus Strix R9 390
Enermax Revolution +87 650w
new w10 install with the latest updates, latest chipset drivers installed, Ryzen balanced power plan

Hi,

I switched - as many others - from an overclocked 4790k to a Ryzen 3700x and I love the performance, but I have some issues probably related the fact how young this platform is.

My first issue was that the motherboard I'm using is actually the second one, the first one stopped working correctly after upgrading the bios to 1005. There was the asus logo and the press f2 message but I couldn't do anything to enter the bios. Tried different keyboards, usb and ps2, reseted the cmos many times but nothing. So I had to buy a new one, not a good start.

With the new board the bios update worked fine, first I had some stability issues but it turned out that in the hurry switching the motherboards I've put the ram modules in the a1 and b1 slots, it took a while to figure out why it would not start at the default memory speed.

My cinebench all core speed is 3960 /I think it’s a little bit low/ with everything set to auto, this way the vcore is 1.20-1.22v under load. I tried pbo and this is when the fun has started. With pbo enabled the speed went up to 4150 and the vcore to 1.36v. I thought I'll try to lower this to see what happens so I’ve set a minus offset of 0.1v. With this setting the vcore under load went up 1.46v! I disabled pbo but the minus offset remained and vcore was 1.32-36v. After that I tried to set a plus offset of 0.1v with that setting the vcore under load was the same as with the auto settings, 1.2v.. I stopped playing with the cpu voltage after seeing some 1.55v results with the minus 0.1v offset because I was affraid to kill the cpu.

It seems there is something wrong on this board with the voltage settings, to summarize; right now a minus offset gives additional voltage a plus offset does nothing.

I went back to the defaults for the cpu and started to adjust the memory settings. I've set soc to 1.1 vddg to auto the rams to 1.35 and every other voltage manually to the default values. This way my memory was running at 3666 with 1:1 to if. It seemed to be stable after 2x12hours of hci memtest and many multiple hours adobe premiere exports. Then one day my pc just restarted while idling. No bsod, no minidump, just like someone has pushed the reset button. My only idea was to lower the memory speed and if speed, I went down to 3600/1800. Everything seemed to be fine but a couple of days later I left my pc running for the night /everything was closed/ and in the morning I saw that in the middle of the night it has restarted the same way as before.
The only thing I can think of - after the issues with the cpu voltage - that this must be related to power regulation of the board. While in the bios I saw that the measured soc voltage jumped from the manually set 1.1v to 1.25v multiple times and when ryzen master showed 1.1v for the soc, the vddg voltage was 1.15v /set to auto in bios/ and I think it should always be below the soc voltage.

I also see continuous rcraid event 129 messages in the eventlog, but I don’t care right now.:)

I’m interested if others have similar problems with this specific or other x570 asus boards.