AB350 Gaming-ITX/ac + TridentZ 16GB only 2133 MHz

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   Hi cx5 and thanks for the reply.  Uuh... I've been reading and testing a LOT...  My setup is Asrock x570 Creator, 3950x and 64GB Corsair 3600C16 LPX Vengeance RAM (4x 16gb).  My goal is to get all RAM (MCLK) and Infinity Fabric (FCLK) and UCLK (North bridge?) running 1:1:1 in sync. 

This seems to be surprisingly hard. The XMP is not working at all on any version BIOS/UEFI above version 2.40.  On bios2.40 I can get the system to post and boot running DRAM 3600mhz, manually setting FCLK 1800mhz and keeping UCLK 1:1 but is not stable.  Dividing UCLK/2 is stable.  I believe somehow I need to boost voltages in UCLK to make it run 1800mhz stable.

And why ASRock have taken UCLK divider away from BIOS versions above 2.40??  Also disabling unnecessary USBs is not possible on newer bios versions.  I did get a beta bios 3.54 for the Creator but this did not help either.  Also the PCIex16 version (Auto-Gen1/2/3/4) does not seem to work at all on some bios versions.  

Bios2.40 with updateg AGESA wuould be very nice.  If I can't get this rig running, I might upgrade my processor to 5950x, maybe take 32gb RAM out or *sigh*... switch the motherboard...

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Andy9000 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 30 Jun 2021 Location: Finland Status: Offline Points: 30	Post Options Post Reply Quote Andy9000 Report Post Thanks(0) Quote Reply Posted: 08 Jul 2021 at 3:34pm
	Hi cx5 and thanks for the reply. Uuh... I've been reading and testing a LOT... My setup is Asrock x570 Creator, 3950x and 64GB Corsair 3600C16 LPX Vengeance RAM (4x 16gb). My goal is to get all RAM (MCLK) and Infinity Fabric (FCLK) and UCLK (North bridge?) running 1:1:1 in sync. This seems to be surprisingly hard. The XMP is not working at all on any version BIOS/UEFI above version 2.40. On bios2.40 I can get the system to post and boot running DRAM 3600mhz, manually setting FCLK 1800mhz and keeping UCLK 1:1 but is not stable. Dividing UCLK/2 is stable. I believe somehow I need to boost voltages in UCLK to make it run 1800mhz stable. And why ASRock have taken UCLK divider away from BIOS versions above 2.40?? Also disabling unnecessary USBs is not possible on newer bios versions. I did get a beta bios 3.54 for the Creator but this did not help either. Also the PCIex16 version (Auto-Gen1/2/3/4) does not seem to work at all on some bios versions. Bios2.40 with updateg AGESA wuould be very nice. If I can't get this rig running, I might upgrade my processor to 5950x, maybe take 32gb RAM out or sigh... switch the motherboard...
	Music production

ThreeDee Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 24 Jul 2019 Location: Billings,MT Status: Offline Points: 2396	Post Options Post Reply Quote ThreeDee Report Post Thanks(0) Quote Reply Posted: 08 Jul 2021 at 8:04pm
	to run 4 x 16gb sticks at 3600 is a bit of a tall order for your 3000 series Ryzen CPU. I'm sure 2 sticks would run just fine in A2/B2 .. and run at even faster speeds .. Your memory controller is on the CPU .. upgrading to a 5000 series Ryzen might get you to 3600 with all 4 sticks 1:1. Your best bet is to run at 3533 ..or 3400 ..whatever you can get stable and then tighten up the memory timings and you achieve same performance (or real close) as running at 3600. Edited by ThreeDee - 08 Jul 2021 at 8:05pm
	\|Ryzen 5 5900\|ASRock X570 Taichi-BIOS 4.60\|2x16GB HyperX Predator RGB 3200@3600 1:1 IF\|ASRock RX 6700XT\|2 x PCIe 4.0 M.2 Drives for OS & Games\|850 WTT Seasonic 80+ Titanium PSU\|Noctua NH-D15\|