Performance for Free: Unlocking Resizable Bar for unsupported AMD GPUs (Polaris, VEGA, Radeon VII)

Discussion in 'Videocards - AMD Radeon Drivers Section' started by Romulus_ut3, Oct 21, 2022.

  1. masterfaster

    masterfaster Member

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  2. LordAdnan

    LordAdnan Member

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    Hmm i have Gigabyte board.. b450 aorus m.. i cant enable it, i tryed to flash modded bios, but cant pass, cant flash modded bios... yeah i saw too that for someone just work.. hope we all find a way to enable it. Funny thing, i enabled rebar on my other build with i7 4770k and z97 mobo.. but here i cant... i feel pain hahahah
     
  3. Rambo

    Rambo Master Guru

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  4. LordAdnan

    LordAdnan Member

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  5. masterfaster

    masterfaster Member

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    Because you have Gigabyte board. (Read my comment above).
     
  6. Rambo

    Rambo Master Guru

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    Maybe your mobo vendor is a jerk xD. ZEN, ZEN+ and NAVI, Polaris, and even older GPUs can use ReBAR and that is a fact.
     
  7. LordAdnan

    LordAdnan Member

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    This sucks man...
     
  8. I have an ASUS PRIME-X470 PRO motherboard, 2700X (Zen+), and have had resizable BAR with a RX 580, RTX 3060, and currently with a 6600 XT (Linux gives full 8GB BAR, Large memory in Device Mgr on Windows, Radeon CP says SAM is enabled, GPU-Z is all-yes for rBAR).
     
    masterfaster likes this.
  9. Edney

    Edney Guest

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    Huananzhi X99-8M + RX570 8GB Working !
     
  10. dieguete0

    dieguete0 Member

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    Bar is in GA-AB350 Gaming, hidden if it is not modified, but not even activating it in two different instances is it activated (bravo Gigabyte SARCASM), with a 1600AF and a RX580NITRO 4g, I have tried everything that occurred to me but I have given up and I can't I have enough knowledge, it may be that I have a Ryzen 3000 instance but, I don't know! ...
     

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  11. Offler

    Offler Member

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    Just for the record, I made it run on Threadripper 1900x and Asrock x399M Taichi mainboard, but AsRock provided BETA Bios (With higher AGESA version) where RE-BAR was added.

    AMD Radeon VII is unsupported as well, but with UEFI Bios from AsRock and editing driver registry its possible to make it work.
     
  12. dieguete0

    dieguete0 Member

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    Well, in the end I was able to activate it by putting the @xCuri0 module in the bios. Thanks! Now I have another problem.
    My configuration R5 1600AF, Gigabyte AB350 Gaming rev1 and Nitro RX 580 4G, I have a 2g limit in the bar, I can put the 4 boots but it does not open games or adenaline etc.
    Is there any solution for AM4 AB350? .
    Regards.
    Saludos.
     

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    Last edited: Jan 30, 2023
  13. LordAdnan

    LordAdnan Member

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    How you flashed modded bios? I cant flash it i get errors ?
     
  14. dieguete0

    dieguete0 Member

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    In my almost I have to flash first the f40 from the gigabyte flash, and then with efiflash the 51g, if I'm in 51g I can't flash the modified one. It's a bit of a pain in the ass but that's how it works for me.
     
  15. LordAdnan

    LordAdnan Member

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    Yeah i do the same thing and now it is working @Rambo yeah it work after all hah.
     

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  16. azkaban3000

    azkaban3000 New Member

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    Works with B450i Strix, Ryzen 3600 and RX 6700 XT
     
  17. reslore

    reslore Member Guru

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    I had rebar+SAM working on a 2700x with a Vega 64 (using custom drivers) and then my 6800 XT. These days I'm using a x570 board with a 5800x3d processor, SAM works fine with it no problem.
     
  18. Rambo

    Rambo Master Guru

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    [​IMG]
    For those who still think that older cards are not supported.
     
    Deleted member 282649 and Cryio like this.
  19. D1stRU3T0R

    D1stRU3T0R Master Guru

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    On my Gigabyte B450M DS3H SAM doesn't work anymore, it worked before for like a year, now when I got home from the university, I see that it's dead, no idea why since I didn't changed the bios (using latest)...
     
  20. Westsr

    Westsr Guest

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    Any help with msi Z170 with I6700 cpu not working rez-bar gpu asus rog rx 580
     

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