Originally Posted by Bapt33
Thanks for this i will take a look. SAdly i still get error with auto timings at 3200 which are over loosen ... so dram calculator timings not stable, and even on auto with TRFC 560 ...
this mobo is a nightmare for RAM ... look those timings, how it cant be stable ?? ...
The timings are unlikely the problem (although too tight secondaries could be late / intermittent). It is very likely the signaling, with some influence from SOC voltage settings and core overclock.
It may be worth reverting the core settings to find the true ram ceiling.
Other than that, the first things I might mention would be similar to what Veii already said. The "normal" RTT for single rank, Samsung B-die would be 7-off-5 (34-off-48 in ohms), although Asus likes to default to off-off-5. CAD drive strength settings to 24-24-24-24 to start.
Besides turning down SOC voltage a little, I would roll back most, or all of the LLC. Too much voltage can increase error rate.
You can ballpark the required voltages using AIDA stress test with cache and memory checked (+/- FPU depending on cooling). Should run it at 30min to an hour at the beginning of the process. This is more or less one of the first steps in cm87's guide on computerbase.de.
is a 3200MT/s result for a Zen+ on the X370-Pro using FlareX B-die, although it is under Pinnacle AGESA v 4011. In this case, working RTT was 5-off-5. Forum post was at hardwareluxx.de here, via google translate
. Maybe that will work for you, but that can be board, bios version, combination specific.