Here are some results with previous tests I did, mostly not stable on full load :

3600 CL14-ish

3800, not stable because of IF

 

You're on a 3000 series, that's kind of expected as you're already pushing insane FCLK numbers for that gen.

As for AIDA64 numbers, try referring to this: https://docs.google.com/spreadsheets/u/0/d/1dsu9K1Nt_7apHBdiy0MWVPcYjf6nOlr9CtkkfN78tSo/htmlview#

 

tRCDRD 16 on Micron ICs are suspect, are you sure it's really stable?

 

For Micron E-die at lower frequencies, that's actually quite common. And OP is on AMD, which is even more forgiving.

 

@Ichirou Took me sometime to realize that generation gap with these AM4 ryzen chips mean a lot. Coming from intel 2500k, had no idea about any of this until last week It was a dead end goal trying to reduce latency below 60ns.

Found a zenTimings post at reddit this week, same kit. Copied all settings. Also CPU is heavily overclocked with CTR (Around 4.5ghz All core with 1.35 mV and 4700 for weak loads with 1.425 mV)

@Mach3.2 At this stage system can do all blender tests without issues, Cinebench r20 as well. Tried to load it with OBS filecompression while gaming on cpu heavy game too, slow x264 preset, didn't crash

Blender - Open Data Benchmark

Blender Open Data is a platform to collect, display and query the results of hardware and software performance tests - provided by the public.

opendata.blender.org

@Mach3.2 Thanks for suggestion, doing the test you mentioned now. I will update once it reach few more cycles or/else fails.

I think the main instability reason system having had to do with VDDG voltages. Mainboard default SoC voltage was below 1.1 too. After doing some reading about this totally new platform to me, I decided to bump up VDDG a bit (CCD to 1.000 and IOD to 1.075) and SoC to 1.1 - all to stabilize 1900 IF on 3700x. I left memory voltage on auto, which is 1.35. Seems stable (For now)


@Ichirou People with this same kit, they all say it is impossible to get timings to flat 16. That post I found in reddit with zentimings, people say this kit scales really well with voltage but only at speeds, timings are pretty much impossible to reduce. Maybe 18 to 17, with lots of voltage. Right now im at 1.35 with tight timings I found. And since going below 60ns with this architecture won't be possible, I think i will stick with these settings.

Edit:
testmem ended but only in 3 cycle, says no errors

Timings used @1.35v (default/auto voltage) for Ram

 

AMD in general doesn't get super tight latencies. Even pro overclockers on average land in the 50ns range. And they're using Samsung B-die with tight overclocks.
Once you start tightening the rest of your timings, you'll start to get closer to the 50ns range.

 

@inter_stella 3 cycles of default@1usmus_v3 profile is not enough, you need to hold memtest for minimally 1 hour before you reach thermal equilibrium. You need to edit the default config, change 3 cycles to at least 20 cycles. Personally I'd go with 25 cycles.