Help Fatal1ty B450 Gaming-ITX/ac memory problem

3000Mhz with a CL14 timing is a good setting for this RAM.
Remember, this is dual ranked RAM with a higher electrical load compared to single ranked and you have a 2600 CPU which is designed for max. 2933 MHz RAM clock.
If you will be able to reach 3200Mhz with increased timings, the result probably ends in a lower performance compared to this CL14 timing at 3000MHz.

BTW:
There is a dependency for tCL (CAS) to GearDown mode.
If GearDown mode is enabled, only even tCL values are valid, so it will be rounded up to the next even value.

marsovac wrote: Modules are 2 double sided 16GB Corsair Vengeance LPX sticks for 32GB in total with Hynix AFR chips. They are not in the memory QVL for Pinnacle ridge but I see there is one DS module that supports 3200, so it should also be able to work like that: ADATA AX4U3200316G16-SGZ These Corsair modules worked with XMP timings and 3200Mhz exceptionally well in the Intel z270 i7 7700K system.

The XMP timings are probably optimized for Intel.

You can try using XMP3200 with a bit increasing DRAM voltage up to 1.36V..1.40V max

If that does not help you should give the Ryzen DRAM Calculator a try.

I have a memory problem with Ryzen 2600.

It cannot even run stock XMP that has default to CAS15, if i fiddle with timing I can get it to work but at 3000Mhz max and not a bit more, but at that 3000MHz it works at CAS14 instead of the declared 15 and all timings tightened.

Seems there is a memory problem with the board that it won't run past 3000 Mhz.
Curently I would call it: Faul1ty B450 Gaming-ITX/ac :)

Modules are 2 double sided 16GB Corsair Vengeance LPX sticks for 32GB in total with Hynix AFR chips.

They are not in the memory QVL for Pinnacle ridge but I see there is one DS module that supports 3200, so it should also be able to work like that: ADATA AX4U3200316G16-SGZ

These Corsair modules worked with XMP timings and 3200Mhz exceptionally well in the Intel z270 i7 7700K system.

Can somebody help me to get to 3200?
Or can support improve memory compatibility in a future BIOS?


Typhoon says:

DRAM Manufacturer: Hynix
DRAM Components: H5AN8G8NAFR-TFC

Here are my CAS14 stable settings with all timings tighter than stock XMP:
Despite being able to lower timing I am not able to go above 3000Mhz. I would rather go with 3200 C15 or C16.

CAS Latency (CL)     14T
RAS To CAS Delay (tRCD)     16T
RAS Precharge (tRP)     17T
RAS Active Time (tRAS)     30T
Row Cycle Time (tRC)     56T
Row Refresh Cycle Time (tRFC)     448T, 2x Fine: 390T, 4x Fine: 240T
Command Rate (CR)     1T
RAS To RAS Delay (tRRD)     Different Rank: 16T, Same Bank Group: 30T, Diff. Bank Group: 14T
Write Recovery Time (tWR)     24T
Read To Read Delay (tRTR)     Different Rank: 5T, Different DIMM: 5T, Same Bank Group: 4T, Diff. Bank Group: 1T
Read To Write Delay (tRTW)     12T
Write To Read Delay (tWTR)     2T, Same Bank Group: 12T, Diff. Bank Group: 4T
Write To Write Delay (tWTW)     Different Rank: 7T, Different DIMM: 7T, Same Bank Group: 4T, Diff. Bank Group: 1T
Read To Precharge Delay (tRTP)     10T
Four Activate Window Delay (tFAW)     32T
Write CAS Latency (tWCL)     12T
Write RAS To CAS Delay (tRCDW)     16T