AMD Motherboards - Unable to obtain full speed on X470 Master SLI/AC

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Unable to obtain full speed on X470 Master SLI/AC

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=13259
Printed Date: 06 Aug 2025 at 7:08pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: Unable to obtain full speed on X470 Master SLI/AC

Posted By: Lyx
Subject: Unable to obtain full speed on X470 Master SLI/AC
Date Posted: 26 Dec 2019 at 8:51am

Good evening !

I am currently unable to run my 2X8GB RAM kit at the qualified speed, from Asrock QVL. I have tried setting the XMP profile, swapping from A2+B2 slots to A1+B1, cleared the CMOS and tried XMP again, setting timings and voltage manually but nothing works -- the computer tries booting 3 times but crashes and finally boots. It stick to 2133mhz, even when manually setting speed to 2133mhz using Ryzen calculator to get the data...

Is there anything I can do at this point ? I would prefer not having to return this motherboard...

My gear :
ASrock X470 Master SLI/AC -- BIOS 3.70
Corsair Vengeance Pro RGB 2X8GB @ 3200mhz (CMW16GX4M2C3200C16 which is on the QVL) v4.32
Corsair RM750i PSU
Corsair H110I GT AIO watercooler
Western Digital Black SN750 NVME SSD 500GB
Western Digital Blue 1TB HDD