X370 Taichi and 1700X

Ryzen need longer to post than other CPUs, that's normal. I'm happy that my system running very smooth and stable. Maybe 10sec and I can login into win10.

im assuming the extra time is the bios trying to set the faster ram speed

eg stock ddr4 speed and settings it'll just start to boot due to knowing it safe settings but when setting the ram overclock its checking to make sure its going to boot safely
and thus the extra time

I tried leaving the OC at 38 and dropping the Memory speed to default and everything works OK. Meaning it boots to the first BIOS screen in ~9 seconds and Restart to UEFI works too.

Just in case you want to know the effect of the slower memory speed on my test transcode to MP4, the time went from ~64 minutes (2933) to ~66 minutes (2133). Not as bad as all the memory posts would have me believing but they are more game oriented not just brute computing.


Edited by Ken429 - 11 Jun 2017 at 6:11pm

Installed BIOS Version 2.40 and cannot find anything that improved. Still takes ~19 seconds to boot and Restart to UEFI does not work. Can somebody give me a clue on what got better?

Are people using the GSkill Memory with the Samsung Chips having the same issue?

One other thing that is a little perplexing - the rated speed of the EVGA 3000 memory is supposed to be CL 15. Yet CPU-Z says it got changed to CL 16. Does that mean that the system does not like the memory @ CL 15?



Edited by Ken429 - 11 Jun 2017 at 6:10pm

Ken429 wrote: Installed BIOS Version 2.40 and cannot find anything that improved. Still takes ~19 seconds to boot and Restart to UEFI does not work. Can somebody give me a clue on what got better? Are people using the GSkill Memory with the Samsung Chips having the same issue? One other thing that is a little perplexing - the rated speed of the EVGA 3000 memory is supposed to be CL 15. Yet CPU-Z says it got changed to CL 16. Does that mean that the system does not like the memory @ CL 15?

The X370 Taichi has the AGESA 1.0.0.6 from AMD that was supposed to help with memory compatibility and speed. The results so far have been mixed, depending upon the memory being used, users report better, worse, or unchanged memory speeds and support. Some people got lucky, others not.

AGESA 1.0.0.6 brings more memory speed and timing options, and other rather unique Ryzen options that remain a mystery to me at this time. But all the options in the world don't help if we don't know what to do with them. For example, the ODT options are frustrating, since I've never seen an ODT spec for any model of memory.

My X370 Killer SLI/ac board, with 16GB of G.SKILL 3200 FlareX memory (made for Ryzen, Samsung chips) with a new, similar UEFI update, leaves me so far mostly unchanged in memory operation. I'm still at 2933 14 14 14 34 1T (which is not bad), but 3200 still won't work for me, POST fails. I tried the new 3066 speed at 16 16 16 36, but that has poor stability in Windows, browser tabs crashing but not the browser program entirely (never saw that before.) That is with the SOC voltage at 1.2V too. So yes, I have the same type of result.

Restart to UEFI is still failing for me too, when the memory is at 2933. That is strange since that program should be based on a Windows feature introduced in Windows 8, and I've never seen it fail on my many ASRock boards.

What got better may be a factor of our intervention in tuning memory options, so what I call auto-magic improvements (fixes with no effort on our part) again are a matter of luck.

If you set the timing(s) to 15 (not Auto) and it was changed to 16, then yes the system prefers 16. Or it became "trained" to that value. Relaxed timings can cause memory to work at slightly higher speeds. Ryzen does not support a speed of exactly 3000, does 2933 work for you? We do have a 3066 speed option now, I assume that fails for you? 3066 is a slight memory OC for your memory, so if many of us cannot get our memory to run at the rated (but still an OC relative to the Ryzen memory controller spec) OC speed, then a true memory OC will usually be more difficult.

For an experiment, you can try setting all the memory timings to Auto (system selected), and try 2933 or 3066. DRAM Voltage at 1.35V, SoC voltage at 1.2V.