B350 and Ryzen 2400G DRAM voltage issues?

fxscreamer · October 2, 2019

I built some office computers for my parents over a year ago, though their builds were just about 4-5 months apart. During this time the B350 boards evolved into B450. Their computers are nearly identical except a ram speed difference and mobo generation. No issues with Build #2, as the B450's were designed for the 2000 series. The BIOS was updated enough on the B350 at the time for the chip to work, though I updated it further.

Build #1 (BSOD... unstable)

Ryzen 2400G

MSI B350M Gaming Pro

16GB G.Skill Ripjaw V 2400mhz

Samsung SSD Evo

Seasonic SII PSU

Build #2 (rock solid stable)

Ryzen 2400G

MSI B450M Gaming Pro

16GB G.Skill Ripjaw V 3000mhz

Samsung SSD Evo

Seasonic SII PSU

Other than basically the case, BUILD 1 is ALL NEW PARTS, fresh Windows 10 installation. It has random BSOD's, even from day one installation.... but then it stopped, for awhile. It's erratic. I had been running EVERYTHING stock, 2133mhz ram, 1.2v, no OC's.... nothing. It would still randomly BSOD. Boots up lightning quick, but open Chrome, Word, etc.... give it 2 minutes, who knows if it'll crash. Sometimes I'd see "IRQ" crash errors, but not always. Today I saw it keep crashing and rebooting on it's own for 10 minutes, sometimes Windows even failing to load with a Windows Notice.

I was ripping my hair out trying to figure out what was going on. I figured maybe B350 boards just don't like Ryzen 2400G's, but then I saw Jayz Two Cents literally use those together in a video and had no issues. I then started thinking it's either the RAM or a faulty motherboard. What I think I found it.... it was both, yet neither were necessarily faulty.

I think running 1.2v on the DRAM from the board was the culprit. Even at stock 2133mhz, the 1.2v power delivery was still too low causing BSOD crashes and corrupt memory. I updated to the latest BIOS (again) and ran the 2400mhz Profile #2 this time, but also noticed the DRAM voltage never adjusted higher than 1.2v. I forcefully moved it to 1.32v and restarted.

NO CRASHES FOR HOURS as I installed the giant Windows 10 1903 update, newest Radeon drivers, etc. Absolutely perfect.

Is this something people have seen in the past on other motherboards? Is it RAM specific? Brand specific? Was I just lucky and this is going to probably crash again? I figured just saying hell with it and getting a B450 board would be my best answer but don't want to have them spend money if it's a simple voltage switch.

Am I safe? Was this the correct solution? Thanks!

Streetguru · October 2, 2019

37 minutes ago, fxscreamer said:

If it's running fine after raising the voltage then it's either gen 1 ryzen's memory controller or the motherboard having an issue, might be fixed in a later bios, could try the motherboard maker's forum.

You can go up to 1.4V on DDR4 without issue, but 1.35V should be fine