Change shared memory size on a B350 Pro4
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=8087
Printed Date: 18 Jul 2025 at 10:51pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Change shared memory size on a B350 Pro4
Posted By: D3M1G0D
Subject: Change shared memory size on a B350 Pro4
Date Posted: 17 Mar 2018 at 12:13am
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" rel="nofollow - I recently put together a budget system using an ASRock B350 Pro4 and a Ryzen 5 2400G but I cannot find the option to change the shared memory size in the BIOS. The manual shows it under Advanced North Bridge Configuration but I don't see it on the BIOS screen. Anyone know where it is?
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Replies:
Posted By: Vathos
Date Posted: 18 Mar 2018 at 1:57am
Exactly what I want to know. I have checked every option for it and found absolutely nothing so far.
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AMD Forever
R5-1600, R7-1800X, R5-2400G
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Posted By: Leeouque
Date Posted: 18 Mar 2018 at 2:28am
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If I remember correct, you should go to Advanced => AMD CBS => NBIO common options => GFX something and there you can change shared memory.
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Posted By: Vathos
Date Posted: 18 Mar 2018 at 3:20am
found it after no less than 4 hrs of random searching.
Advanced\AMD CBS\NBIO Common Options\GFX Configuration
Set Integrated Graphics Controller to Forces
Then I set UMA Mode to UMA_SPECIFIED
And the Option UMA Frame Buffer Size showed and set to 4G for my 16Gb Ram pool.
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AMD Forever
R5-1600, R7-1800X, R5-2400G
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Posted By: D3M1G0D
Date Posted: 18 Mar 2018 at 11:19am
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" rel="nofollow - I asked on Reddit and managed to find it, but have another problem. When I set it to 4 GB or higher it's only allocating 2. Any ideas why?
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Posted By: Vathos
Date Posted: 18 Mar 2018 at 12:47pm
thinking it is a limitation for now. Mine shows 2Gb as well. Another bios revision or two and maybe we will see that 4Gb.
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AMD Forever
R5-1600, R7-1800X, R5-2400G
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