Windows 10 BSDO with ASRock AB350. Help please!

Light875 wrote: datonyb wrote: the 1t or 2t is another setting 1t being aggressive timing and is ryzen default at the moment (most sticks are set to work at 2t which is more relaxed hence why even at the sticker numbers it may still not be stable due to the hidden 1t command rate Can't see that setting anywhere in the BIOS, but CPU-Z shows it as set to 2T at present.

There is not a Command Rate option setting yet in any ASRock Ryzen boards. It will be coming in a few weeks, or should be, once the new AMD AGESA CPU microcode has been added in a UEFI/BIOS update, along with new memory timing settings, including Command Rate.

Have you tried running your memory at 2133 for a few days and see if you still get random BSODs?

If you download the CPU-Z program, run it and click on the SPD tab, it will show you all the standard memory timing values programmed into it. That will show you what latency values are valid at each speed. There are only four memory timing parameters in the UEFI/BIOS now, which is very minimal, so it should be easy to match and set values.

http://www.cpuid.com/softwares/cpu-z.html

Your memory is rated for 2400 at 1.2V, but a small increase to 1.25V won't harm anything. Ryzen systems seem to have trouble getting to the highest rated speed of some memory models, and since your memory is only rated up to 2400, it might have a little instability

You did not mention installing any drivers after installing Windows. Did you at least run the AMD All in One driver installation package?

can do better than that

listen to the AMD tech guy show you
https://www.youtube.com/watch?v=vZgpHTaQ10k&app=desktop
talk starts at 4 mins into video

basically ram has settings called timings they all make the ram work harder the lower they are
think of it similar to ticks /switches and the time it takes to switch lower is faster but less stable

the 1t or 2t is another setting 1t being aggressive timing and is ryzen default at the moment (most sticks are set to work at 2t which is more relaxed hence why even at the sticker numbers it may still not be stable due to the hidden 1t command rate

watch the video he does give you a pretty decent dummies guide to ryzen and ram

its how we all learn from reading and watching

ddr4 is ALL set to 1,35 over 2400/2666 anyway
this is in no way anything ill-advised (most say 1.5 is still safe) but why overvolt it if it dosnt need it
(1.35 isnt a real overvolt though)
another ram stability tip is changing the soc to 1.0 v or 1.1 volt still within amd recommended settings but i dont think your board has the soc voltage change enabled

anyways try it i think you have helped yourself already with the looser timings the sticks were actually rated at rather than the tighter ones am4 selected for them (remember you are probably running them at a command rate of 1t default when they should be running 2t there rated/tested timings so you might even have to loosen up the initial 16/16/16/39 a little more anyway

pretty soon you will get the bios file with agesa 1006 which should deal with all these ram issues properly

make sure the ram volts is 1.35 as well it wont hurt stability

datonyb wrote: ok some thoughts/answers the ram version (3.31) this is the model AND version tested it basically indicates what batch /production run the ram was/is point to note is some of these brand ram sticks depending on version number have either the 'good' samsung ic chips on them and some of the same model number but different version have the 'not so good' hynix ( the point im making is ryzen/am4 seems to play best with samsung dies) just becuase your version isnt listed on rymem is because no-one has built the board with them AND THEN went onto test and upload results (rymem is a non profit one man help page to collate data to help other end users) now it does sound like your problem could be ram related can i suggest manually reading the info from the ram sticker and entering it manually into bios eg 16/16/16/35 etc (whatever your sticker says in a similar order of numbers)

Thanks for the information, makes sense regarding RYMEM, I suspected that may be the case.

Just had a look at the RAM sticks I have, both are Ver 5.29 with 16-16-16-39 timings. I've now set the clocks to those settings, was previously 15-15-15-35 I think. Will see how that goes and report back.

As far as the Ver number goes, is there a table to check against to see if they are Samsung or Hynix?