Intel Motherboards - PG Velocita z490 Resizeable Bar ( C.A.M) Support

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PG Velocita z490 Resizeable Bar ( C.A.M) Support

Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=18556
Printed Date: 27 Jul 2025 at 6:39pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: PG Velocita z490 Resizeable Bar ( C.A.M) Support

Posted By: Jamesdicon85
Subject: PG Velocita z490 Resizeable Bar ( C.A.M) Support
Date Posted: 05 Apr 2021 at 8:31pm

Hello,

I have an Asrock PG Velocita z490 Motherboard with the latest 1.7 Bios that supposedly supports C.A.M (resizeable bar).

The GPU is a Zotac OC running the newest Vbios with the latest driver from nvidia.

The problem im running into is the C.A.M Option is not listed with in the motherboard bios so i am unable to turn this on and utilize the CAM feature. A few other users on Reddit have said the same thing, that the option is missing in the bios.

Are there any solutions for this£

Replies:

Posted By: ASRock_TSD
Date Posted: 06 Apr 2021 at 6:57pm

Hi Jamesdicon85,

Thank you for your post.

Please follow the instructions below to enable "CAM".

1.Boot into BIOS and go to the "boot" page, then go to "CSM"
2.Disabled "CSM"
3.Go to Advanced\chipset configuration, then enable "Above 4G decoding" and "CAM"

Also, please make sure you are using the AMD RX6000 series or the NVIDIA 30 series with the vBIOS which supports Resizable BAR.

If you have other questions, please feel free to contact us.

All the best,
ASRock TSD