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Resizable BAR support for X299 |
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Playman325 
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Joined: 25 Nov 2022 Location: Texas Status: Offline Points: 65 |
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 Posted: 25 Nov 2022 at 11:51pm |
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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.
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namitazop
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Joined: 24 Dec 2022 Status: Offline Points: 45 |
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Posted: 24 Dec 2022 at 4:47pm |
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I would like bios for x299 Taichi to
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namitazop
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Posted: 27 Dec 2022 at 6:54pm |
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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 |
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ThunderKeg
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Joined: 11 Feb 2024 Location: Australia Status: Offline Points: 35 |
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Posted: 12 Feb 2024 at 7:35pm |
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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 |
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Certifiedlover6
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Joined: 20 Feb 2026 Status: Offline Points: 15 |
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Posted: 24 Feb 2026 at 10:35pm |
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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
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Fireares
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Joined: 09 May 2026 Status: Offline Points: 60 |
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Posted: 09 May 2026 at 12:59am |
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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 |
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Fireares
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Joined: 09 May 2026 Status: Offline Points: 60 |
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Posted: 09 May 2026 at 1:41am |
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 |
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Xaltar
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Joined: 16 May 2015 Location: Europe Status: Online Points: 38228 |
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Posted: 09 May 2026 at 2:49am |
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It's fine, I replied your other post. Let me know what ASRock responds to your
request. |
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Alime1954
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Joined: 29 Dec 2024 Status: Offline Points: 60 |
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Posted: 1 hour 7 minutes ago at 9:18pm |
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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. |
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Fireares wrote: