B550M Pro4 + Ryzen 5600X unstable XMP
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=17234
Printed Date: 09 Aug 2025 at 4:03am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: B550M Pro4 + Ryzen 5600X unstable XMP
Posted By: kingmustard
Subject: B550M Pro4 + Ryzen 5600X unstable XMP
Date Posted: 13 Nov 2020 at 4:00am
[URL=https://www.google.com/search?q=%22PVS432G360C8K%22]Patriot Viper Steel Series DDR4?(2 x 16 GB) 3600 MHz[/URL]?|?[URL=https://www.asrock.com/MB/AMD/B550M%20Pro4/index.asp]ASRock B550M Pro4[/URL]
When I?enable XMP (3600 MHz, 18-22-22-42)?in the UEFI (1.42, dated six days ago), Windows doesn't boot for long before the system reboots itself.
e.g. if I leave it on the login screen, it'll reboot after 10-30 seconds. If I manage to log in, it'll reboot within a minute of logging in.
The system runs fine at DDR4 standard/stock?(2666?MHz) (20-19-19-43).
I've tried slots A2/B2 (recommended by manual) and A1/B1. No difference.
Any ideas?
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Replies:
Posted By: MadScientist
Date Posted: 13 Nov 2020 at 8:10am
Your ram is not on Asrock's approved list for your MB. https://www.asrock.com/MB/AMD/B550M%20Pro4/index.asp#MemoryMS
And the memory spec for the 5600X is up to 3200Mhz. https://www.amd.com/en/products/cpu/amd-ryzen-5-5600x
I have the same problem with Corsair 3600Mhz ram and the B550 Phantom Gaming 4 MB. The best I can do is to manually set it to 3200Mhz.
In your bios set the ram speed to 3200Mhz, the FCLK (infinity fabric) clock speed to 1600Mhz, and your timings to Patriot's 3200Mhz ram. https://assets.website-files.com/5cdb2ee0b102f96c3906500f/5edfdbf75a54307eb4a706da_PVS432G320C6K%20Sku%20Sheet_Copyable_041620.pdf Tested Timings: 16-18-18-36
Save and boot to Windows. Check the ram speed with a program like CPU-Z or HWINFO64.
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Posted By: jackson1101
Date Posted: 16 Nov 2020 at 10:58am
Would installing a higher speed RAM prevent a computer from getting to POST/BIOS, or would the system underclock it to an acceptable speed to boot up?
I may have made a similar mistake in that I got a 5600X and B550 Phantom ITX/AX along with 3600MHz Corsair Vengeance LPX, and I can't get the build to even POST (no video output at all, and not even any mobo speaker beeps). That said, this could maybe be due to my mobo not yet having an updated BIOS that supports the Ryzen 5000 series?
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Posted By: MadScientist
Date Posted: 16 Nov 2020 at 7:43pm
If you have the correct bios on your MB for the 5600X, P1.20, then it should boot up with your ram at the default of 2133mhz.
There should be a sticker on the chipset on your MB that says what the current bios version is on your MB.
You need P1.20. https://www.asrock.com/mb/AMD/B550%20Phantom%20Gaming-ITXax/index.asp#BIOS
https://www.asrock.com/mb/AMD/B550%20Phantom%20Gaming-ITXax/index.asp#CPU
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Posted By: mikko0801
Date Posted: 14 Mar 2021 at 11:46pm
we have the same issue but mine was x570 steel legend i contacted support from asrock finally they have solve my problem was running ryzen 5 5600x on bios P.360 my ram was 32gb g skill trident z royal 3600mhz 16-19-19-39 1.35v and it would not run my xmp prof so asrock hand me some things to tweak on bios and it did work
Thank you for choosing ASRock and contacting us.
Regarding your case, please check the RAM install at A2, B2 slot.
We also provide some setting for you to try.
1.
SoC/Uncore OC Voltage: 1.1V
VDDP Voltage: 1.1V
VDDG CCD Voltage: 1.1V
VDDG IOD Voltage: 1.15V
2.
SoC/Uncore OC Voltage: 1.1V
VDDP Voltage: 1.0V
VDDG CCD Voltage: 1.1V
VDDG IOD Voltage: 1.1V
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Posted By: kingmustard
Date Posted: 15 Mar 2021 at 3:01am
Solved:
https://www.linustechtips.com/topic/1268387-asrock-b550m-pro4-ryzen-5600x-unstable-when-running-3600-mhz-ram-at-3600-mhz/" rel="nofollow - https://www.linustechtips.com/topic/1268387-asrock-b550m-pro4-ryzen-5600x-unstable-when-running-3600-mhz-ram-at-3600-mhz/
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