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1 set left only, very limited indeed.

Newbie first attempt on ram overclocking here, so go easy on me pls

Here are my results after some tinkering last night and it's stable at 300% memtest just now.
MSI X570 Unify | G.Skill Trident Z Neo 3600C16 (B-die) 2x8GB | DDR4-3600 14-15-15-30-1T @ 1.41v | SOC voltage @ 1.1v (refence to owikh84 format)




I've used fast preset timings from DRAM Calculator by 1usmus v.1.7.3 with XMP imported from Thaiphoon.


Initially I tried vDIMM @ 1.35v and vSOC @ auto with safe preset timings, no go failed to boot so I had to bump up vDIMM to 1.4v, vSOC @ 1.1v.
It did boot fine and I got a little ambitious, I tried 14-14-14-28-1T with those voltage, it will boot but memtest error at around 60%.

End up punching in the current settings, and set vDIMM @ 1.41v. Passed 300% memtest but I know things can be improved.

Everything on CPU is Auto, cooled by wraith stealth while I'm waiting for some custom wc parts to arrive. Temps are high at 83c and I'm reluctant to hammer it now.

A few things that raised some question, the vDIMM readout in HWinfo is quite a bit higher than what I set in BIOS eg: vDIMM @ 1.41v in BIOS but appears to reach 1.436v in readings. vSOC is still close enough.
Another weird thing is the memtest coverage, some threads are at 400% already but some just only reach 300%, most results that I referred to had about 10-20% difference only.

Any sifu feel free to comment on it and I'll see how I can improve.

I just did some tests, it's not posting at 1900 FCLK, failed the silicon lottery I guess. It's an early 2020 batch, but still not good enough for that.
1867 FCLK posted with no problem.

I see, I'll try higher frequency settings in the future. But for now, focusing on finding the right settings for normal usage.

I tried applying VSoC 1.15v, VDDG 1.05v, VDDP 0.925v. Still doesn't boot.

I did try something I found online to enable LN2 mode under AMD overclocking, and then go back to set 1900 FCLK in bios, everything else auto including ram. It did boot into Windows after some struggle, but in Windows, the fabric clock was fluctuating at around 1200 FCLK only. Unfortunately the guy only mentioned good luck stabilising FCLK from there and nothing else

Maybe I'll just go back and play with 1867 (3733), it was spitting error at 3733 16-16-16-32 @ 1.42v, maybe I'll try bumping up the voltage little by little. Dram calculator suggested up to 1.48v

I tried, still 1900 FCLK is impossible on this R5 3600, guess it just doesn’t like it at all, almost instantaneously goes into 07 post code.

I’m currently playing around with 1867 FCLK and 3733Mhz on ram. Don’t have much time to tighten the timings yet.

I tried your method, still couldn’t boot with 1900 FCLK, this cpu just can’t do it I guess. Will play around at 3733 and hopefully bring it to be stable at C14.

After some tweaking and here's where I am now. HCI memtest 200% stable (late already, I'm going to bed )

MSI X570 Unify | G.Skill Trident Z Neo 3600C16 (B-die) 2x8GB | DDR4-3733 14-15-14-28-1T @ 1.48v | VSOC @ 1.1v | VDDG @ 1.0v | VDDP @ 0.925v


Changed to use HCI memtest instead of runmemtest as the version I used just felt a little odd somehow. Per nrw's suggestion before, I could have ran into insufficient memory and caused the memtest coverage to differ significantly. My available system memory in task manager was 14.2GB, running 1200MB*12 memtest definitely blew that.


What I got here is somewhat similar to what you have suggested, but I was already running memtest just now. I'll adjust those timings again. 66.3ns is an improvement over 3600C14 last time but still far from good, some got theirs to 61~62ns. Maybe at 1867 fclk instead of 1900 hindered my chance of going that low on latency?

Does clock speed affect the time taken for memtest? Average clock speed was down to 3.8Ghz and temperature got up to 84c. I also tried your method of running aida64 stress cache and playing 4k video on YT simultaneously. The temps spiked to 92c after 2 minutes and kept rising even with 3 SGT1850 blowing full speed at it . Really need to get my custom wc running asap.

This post has been edited by CAL V: Jul 16 2020, 08:37 AM