Trouble running XMP profile

Hi, I've purchased the ASRock AB350 PRO4 and from what it's advertising it says it can overclock rams up to 3200mhz, But I can't seem to run my ram's XMP profile which is at 3000 (2993~) or even overclock it all. I'm running the BIOS version v1.44. the ram I'm using is CMK16GX4M2B3000C15. Anyone else having trouble overclocking their rams with this motherboard, if not could you let me know what settings you have enabled/disabled, Thanks.

JohnSlay wrote: Hi, I've purchased the ASRock AB350 PRO4 and from what it's advertising it says it can overclock rams up to 3200mhz, But I can't seem to run my ram's XMP profile which is at 3000 (2993~) or even overclock it all. I'm running the BIOS version v1.44. the ram I'm using is CMK16GX4M2B3000C15. Anyone else having trouble overclocking their rams with this motherboard, if not could you let me know what settings you have enabled/disabled, Thanks.

First, you need to update to the latest UEFI version, 2.20, just released. Question for you, do you have the Instant Flash UEFI update option available in the Tools screen? If you do, I highly recommend you use the Instant Flash method to update your UEFI, rather than the Windows update method.

Please read the instruction for Instant Flash, by clicking on the blue BIOS link on the UEFI download page. If you have any questions about the procedure, please ask:

http://www.asrock.com/mb/AMD/AB350%20Pro4/index.asp#BIOS

I can only go by your board's manual, which frankly does not include anything about options for configuring memory. Normally in the UEFI, in the OC Tweaker screen there is an entry for the DRAM Configuration screen, that allows you to configure the memory's speed and timings. I'm assuming the 2.20 UEFI version will have added that screen by now. Please let us know if you have that screen available after updating to the 2.20 version, or if you have that screen now with the 1.44 version UEFI.

If you do get the DRAM Configuration screen, you can try enabling the XMP profile. Your memory is included in your board's Memory QVL, but if you check Corsair's specs for this memory, you'll see it was designed for use with Intel X99 and the 100 series chipset boards:

http://www.corsair.com/en-us/vengeance-lpx-16gb-2x8gb-ddr4-dram-3000mhz-c15-memory-kit-black-cmk16gx4m2b3000c15

My point is the XMP profile may not work for a Ryzen system. Given what we so far know about the Ryzen memory controller, there are some differences between it and the Intel memory controllers. For example, the Ryzen memory controller does not support a 3000 speed setting. It does support 2933, which must be used instead of 3000. That speed will need to be set manually. I suggest setting the memory speed to 2933, set the DRAM Voltage to 1.35V, and have all of the other memory settings set to Auto. You could try a lower memory speed at first, say 2400 or 2667, to see if the board will POST at that speed.

Nejaa wrote: I've seen some people get higher speeds by increasing the PCIe clock, but that creates issues for your video card and M.2.  I couldn't make it work.

And it's a good thing you couldn't either. Just where are you reading folks stupidly and unknowingly adjusting the PCIe Clock?

Links! Please!

Trender wrote: Hey mate how comes the PRO4 says 3200 OC and Killer X370 says 2993 ?

Things are moving so fast concerning all things Ryzen memory related I think it safe to disregard that.

wardog wrote: Nejaa wrote: I've seen some people get higher speeds by increasing the PCIe clock, but that creates issues for your video card and M.2.  I couldn't make it work. And it's a good thing you couldn't either. Just where are you reading folks stupidly and unknowingly adjusting the PCIe Clock? Links! Please!

Edited by Nejaa - 30 Mar 2017 at 10:40am