AMD Motherboards - B1 B2 not working on X470 F4

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B1 B2 not working on X470 F4

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=13537
Printed Date: 27 Dec 2024 at 8:02am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: B1 B2 not working on X470 F4

Posted By: Frank B
Subject: B1 B2 not working on X470 F4
Date Posted: 28 Jan 2020 at 4:45am

Hello All and thanks in advance for any advise.

I have a 4x8gb set Trident Z 32GB 3200 sequential SN. A1 and A2 are the only slots being used. B1 and B2 are seen on bios (latest version and latest chipset version) but not on windows. Any Ram in A1 and A2 can only run at 2133 ... unless B1 and B2 are empty ... then I can get 1600mhz

A1 - Normal boot with 1600mhz
A1 A2 - Normal boot with 1600mhz
A1 B1 - Only A1 is used at 2133/1066 ... F9 at Start
A2 B2 - Only A2 is used at 2133/1066 ... F9 at Start
A1 B1 A2 B2 - Only A1 A2 is used at 2133 ... F9 at Start
B1 B2 - complete freeze

Nothing placed in the B slots alone work and hangs on boot

I've tried 4 different memory kits and tried every possible combination of the kits with the slots and the behavior is exactly the same

Fresh install of Win10

Reset CMOS

No bent pins on the 2700x

The board has been like this since day one so I've only used A1 A2 but I now need the full 32.