https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sun, 14 Jun 2026 01:12:26 +0000 Fri, 15 May 2026 21:18:16 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=18892 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=18892&PID=201484&title=resizable-bar-support-for-x299#201484 Author: Alime1954
Subject: 18892
Posted: 15 May 2026 at 9:18pm

Hi,

I totally understand your request. Resizable BAR (or C.A.M.) support can really help keep the X299 platform relevant and improve performance in certain workloads. From what I?™ve seen, most of the major vendors are gradually rolling out updates, but unfortunately Asrock hasn?™t officially announced any plans for X299 boards yet.

It might be worth keeping an eye on their support page or reaching out directly to Asrock support ??sometimes beta BIOS updates are released quietly before a full public rollout. Also, checking enthusiast forums or tech communities can help, as users occasionally share unofficial updates or workarounds for enabling Resizable BAR.

Hopefully they consider it soon; it would definitely help extend the usability of the HEDT platform.]]> Fri, 15 May 2026 21:18:16 +0000 https://forum.asrock.com/forum_posts.asp?TID=18892&PID=201484&title=resizable-bar-support-for-x299#201484 https://forum.asrock.com/forum_posts.asp?TID=18892&PID=201415&title=resizable-bar-support-for-x299#201415 Author: Xaltar
Subject: 18892
Posted: 09 May 2026 at 2:49am

It's fine, I replied your other post. Let me know what ASRock responds to your
request.]]> Sat, 09 May 2026 02:49:30 +0000 https://forum.asrock.com/forum_posts.asp?TID=18892&PID=201415&title=resizable-bar-support-for-x299#201415 https://forum.asrock.com/forum_posts.asp?TID=18892&PID=201412&title=resizable-bar-support-for-x299#201412 Author: Fireares
Subject: 18892
Posted: 09 May 2026 at 1:41am

Fireares wrote: Same mobo, no cam option available. it comes with p1.5 bios already. How did you solve it? I disabled csm and enabled above 4g encode. Fast boot is not on.. Thank you

Same mobo, no cam option available. it comes with p1.5 bios already. How did you solve it?

I disabled csm and enabled above 4g encode. Fast boot is not on..

Thank you

（sorry forum admin, I couldn't delete or edit my previous dulplicated post without the quote. Please delete if you can. Thanks!�forumCodes=True]]> Sat, 09 May 2026 01:41:53 +0000 https://forum.asrock.com/forum_posts.asp?TID=18892&PID=201412&title=resizable-bar-support-for-x299#201412 https://forum.asrock.com/forum_posts.asp?TID=18892&PID=201411&title=resizable-bar-support-for-x299#201411 Author: Fireares
Subject: 18892
Posted: 09 May 2026 at 12:59am

Same mobo, no cam option available. it comes with p1.5 bios already. How did you solve it?

I disabled csm and enabled above 4g encode. Fast boot is not on..

Thank you]]> Sat, 09 May 2026 00:59:06 +0000 https://forum.asrock.com/forum_posts.asp?TID=18892&PID=201411&title=resizable-bar-support-for-x299#201411 https://forum.asrock.com/forum_posts.asp?TID=18892&PID=200965&title=resizable-bar-support-for-x299#200965 Author: Certifiedlover6
Subject: 18892
Posted: 24 Feb 2026 at 10:35pm

I have successfully patched the latest bios (1.50) with the rebar enabled on the x299 steel legend, for some strange reason asrock removed the C.A.M feature from the latest bios but had it present in the 1.30g beta version, i do not recommend installing the beta update its very unstable and it keeps resetting itself on every boot. if anyone is interested in modding the bios feel free to reply to this message, thanks]]> Tue, 24 Feb 2026 22:35:36 +0000 https://forum.asrock.com/forum_posts.asp?TID=18892&PID=200965&title=resizable-bar-support-for-x299#200965 https://forum.asrock.com/forum_posts.asp?TID=18892&PID=111375&title=resizable-bar-support-for-x299#111375 Author: ThunderKeg
Subject: 18892
Posted: 12 Feb 2024 at 7:35pm

Hi AsRock Team
May you please create a bios update for the the X299M Extreme4?
For some reason the X299 Extreme4 has all the updates while the "M" Version
is still at Bios Ver.1.50

A lot still use the HDET platform from intel since there is no information
about any new CPUS in the near future.


X299 Extreme4 (Has Newer Bios with Rebar) https://www.asrock.com/MB/Intel/X299%20Extreme4/index.asp#BIOS


X299M Extreme4 (No Rebar Bios)
https://www.asrock.com/MB/Intel/X299M%20Extreme4/index.asp#BIOS

Regards,
Bill Ecrofeg]]> Mon, 12 Feb 2024 19:35:05 +0000 https://forum.asrock.com/forum_posts.asp?TID=18892&PID=111375&title=resizable-bar-support-for-x299#111375 https://forum.asrock.com/forum_posts.asp?TID=18892&PID=102577&title=resizable-bar-support-for-x299#102577 Author: namitazop
Subject: 18892
Posted: 27 Dec 2022 at 6:54pm

My understanding was that 'Fast Boot' didn't use CSM, and since 'Fast Boot' hides the CSM option, it cannot be disabled.

Edited by Xaltar - 25 Feb 2026 at 12:18am]]> Tue, 27 Dec 2022 18:54:47 +0000 https://forum.asrock.com/forum_posts.asp?TID=18892&PID=102577&title=resizable-bar-support-for-x299#102577 https://forum.asrock.com/forum_posts.asp?TID=18892&PID=102525&title=resizable-bar-support-for-x299#102525 Author: namitazop
Subject: 18892
Posted: 24 Dec 2022 at 4:47pm

I would like bios for x299 Taichi to
]]> Sat, 24 Dec 2022 16:47:53 +0000 https://forum.asrock.com/forum_posts.asp?TID=18892&PID=102525&title=resizable-bar-support-for-x299#102525 https://forum.asrock.com/forum_posts.asp?TID=18892&PID=102102&title=resizable-bar-support-for-x299#102102 Author: Playman325
Subject: 18892
Posted: 25 Nov 2022 at 11:51pm

I was just wondering why the extreme4 variant didn?™t get this but every other variant did get it, can anyone tell me the status of the extreme4 version getting it? I really need it before my new graphics card comes in.]]> Fri, 25 Nov 2022 23:51:04 +0000 https://forum.asrock.com/forum_posts.asp?TID=18892&PID=102102&title=resizable-bar-support-for-x299#102102 https://forum.asrock.com/forum_posts.asp?TID=18892&PID=92914&title=resizable-bar-support-for-x299#92914 Author: Milkman
Subject: 18892
Posted: 05 Feb 2022 at 3:14am

No feedback from mods, ASrock support, or other users on x299 Taichi + BIOS version 2.50B used with nvidia 3080 GPUs + resizable BAR? Should I send an email to support? I wont bother with this, if this has been abandoned. ]]> Sat, 05 Feb 2022 03:14:04 +0000 https://forum.asrock.com/forum_posts.asp?TID=18892&PID=92914&title=resizable-bar-support-for-x299#92914