List of working motherboards

[xCuri0]

Motherboards which don't support at least 2GB BAR size are considered not working.

If you're having any issues please see Common issues (and fixes) before replying.

Use this format in your comment:

• Motherboard: (motherboard model)
• GPU: (gpu model, include vram if it comes with multiple vram sizes)
• UEFIPatch: (yes or no depending on if you needed it)
• DSDT Patch: (yes or no depending on if you needed it)
• BAR Size: (BAR size that GPU-Z (Windows) or lspci (Linux) shows)
• RAM: (the amount of ram in your pc)
• Resume from sleep: (works or doesn't. if sleep doesnt work even without rebar then leave blank)
• Notes: any additional information and screenshots of GPU-Z Resizable BAR and GPU control panel showing rebar working optionally with CPU-Z and/or Device Manager Large Memory showing too.

User	Motherboard	GPU	BAR size tested	UEFIPatch req (Y/N)	Notes
@xCuri0	Gigabyte B75M-D3H	RX 580 8GB	8GB	Y	Requires DSDT modification
@romulus2k4	ASUS P8Z77-V PRO	RX 570 4GB	2GB	Y	4GB BAR works too just not in Windows due to AMD driver bug with 4GB Polaris
prazola (win-raid)	ASRock Z97 Extreme9	RX 6900 XT	16GB	Y	Requires DSDT modification to add QWordMemory
Miyconst	Huananzhi X99-QD4	RTX 3060	16GB	N
@sidex15	Jingsha X79M-S 1.0	RX 570 8GB	8GB	N
@dabm-git	Huananzhi X99-TF	Vega 64	8GB	N
@Tokobotenkai	ASUS Z97-Pro	Arc A770	16GB	Y
@cursemex	ASUS MAXIMUS VII HERO (Z97)	RX 6700 XT	16GB	Y	16GB BAR doesn't work with 32GB RAM
@val3nt33n	ASUS Z97i-Plus	Arc A750	8GB	Y
@Mak3rde	ASUS X99-A II	RX 6950 XT	16GB	Y
@LatiosAeon	ASUS Z170-WS	Arc A770	16GB	Y
@LatiosAeon	ASUS Z170 Sabertooth MARK 1	Arc A770	16GB	Y
@kodekq	ASUS Z170-A	RX 5700 XT	8GB	Y
@gyhmz	Gigabyte MZ32-AR0	Arc A380	8GB	N
@CiprianFlorin-Ifrim	Supermicro H11DSi-NT	RTX 4090	32GB	N
MD2 (win-raid)	Gigabyte B75M-D3H	RX 580 8GB	8GB	Y	Requires DSDT modification. Works with 2500k which is PCIe Gen2
@kkkyloo	Machinist X99-MR9A PRO V2	RX 6600	8GB	N
@SEt-t	ASUS Z170-P D3	RTX 3090	32GB	Y
@allesrebel	ASUS X99-DELUXE II	Arc A770	16GB	Y
@Intelevande	MSI Z97 Gaming 5	RTX 3060 Ti	8GB	N
@DanisMiryasov	ASUS STRIX X99 GAMING	RTX 3050	8GB	Y
@terminatorul	Gigabyte X470 AORUS GAMING 5 WiFi	Arc A770	16GB	N	BIOS officially supports ReBar on Zen 3 but not Zen 2 which needs this module
@Divin1ty666	ASUS Z97-DELUXE	RX 6700 XT	16GB	Y
@Phil-Libra	ASUS Z170-DELUXE	Arc A380	8GB	Y
@markmark2009	ASUS X99-DELUXE	RTX 3080 Ti	16GB	Y
@dsanke	ASUS Z170-DELUXE	RTX 3080	16GB	Y
@knasiotis	ASUS X99-DELUXE	RTX 3060 Ti	16GB	Y
@RafaelDiasCampos	ASRock X99 Extreme4	RTX 3070 Ti	8GB	N
@triple-octopus	MSI Z270 GAMING M5	RTX 3080 Ti	16GB	Y
Adiel235 (win-raid)	Gigabyte B365M Aorus Elite	RTX 3060 Ti	8GB	N	Have to connect iGPU to HDMI or won't boot
68k-dude (win-raid)	ASUS MAXIMUS VIII GENE (Z170)	Arc A770	16GB	Y
@dsanke	ASUS Z170-A	RX 5600 XT	8GB	Y	Sleep doesn't work because of 5600 XT override. Works with other GPUs
@originalm19	ASUS P8H61-M LX2 R2.0	RX 6600M	8GB	Y
@Koekieezz	Gigabyte H77-DS3H	RX 590 GME	8GB	Y	Requires DSDT modification. RTX 3060 Ti also works
@dsanke	MSI B150M PRO-VDH	RTX 3080	16GB	N
@necr0n	ASUS Z170-P	RTX 3090	32GB	Y
@dsanke	ASUS H110M-K	RTX 3080	16GB	Y
@JonasGMorsch	Huananzhi X99-F8	RTX 3060 Ti	16GB	N	RX 580 2048SP also works
@terryjx	ASUS X99M-WS	RTX A6000	64GB	Y
@aschor	ASRock X99 Taichi	RTX 3090	32GB	Y	Have to disable Above 4G Decoding Patch in setup
@GhoSt-1992	Asus Maximus VIII Hero (Z170)	RX 480	8GB	Y
@Nutst3r	ASUS X99-A	RX 6600	8GB	Y
@VictorS333	Huananzhi X79 "Green"	RX 580	8GB	N
@FusionDragon	Gigabyte Aorus B550M Pro-P (rev 1.0)	RX 5600 XT	8GB	N	Efiflash only works on BIOS F13 and lower
@robert789011	MSI Z97 Gaming 3	RX 6800	16GB	N
@SiliconExarch	ASUS X99-S	RTX 3070	8GB	Y
@therealRandomGenericDude	Supermicro X9DRI-LN4F	Arc A380	8GB	N	Had to use MMTool to insert the module
@Feyd1364	Asus Maximus VIII Hero (Z170)	RTX 4070 Ti	16GB	Y
@dsanke	MSI C236M WORKSTATION	Xe DG1	4GB	N	Rebar On is required to boot with this GPU
@kpwsyang	ASUS H170M-PLUS	RX 480	8GB	Y
@brafLake	ASUS EX-B150M-V3	RX 6600M	8GB	Y
@LordAdo96	Gigabyte B450 Aorus M	RX 580	8GB	N	Officially supports rebar only with Zen3 CPU
@Aushyro	ASUS Z170-E	RX 590	8GB	Y
@limyz	ASRock H77 Pro4-M	RTX 3080	16GB	Y	Requires DSDT modification
@Rubio85	Gigabyte AX370M-DS3H	RX 6700 XT	16GB	N	Have to use Flashrom DOS to flash
@Briggzy125	MSI Z170-A PRO	RX 6650 XT	8GB	Y	Had to use MMTool
@newborn2010	ASRockRack WC621D8A-2T	RTX A4000	32GB	N
@rekh127	ASUS Maximus IX Hero (Z270)	RX 5700 XT	8GB	Y	Arc A750 also works
@pnrxtx	ASRock Z170 Extreme4	RX 6800 XT	16GB
@sears-s	ASUS Z170-AR	Arc A380	8GB	Y
@MissBendy	MSI B150M Bazooka Plus	RX 6600 XT	8GB	Y
@matrixchanger	Asus Maximus V Gene (Z77)	RX 580	8GB	Y
@dormancygrace	ASUS Z270-A	RX 570	2GB	Y
@BatoMat	Gigabyte B450 AORUS ELITE	RX 590	8GB	N
mhi (win-raid)	ASRock Z97 Anniversary	RX Vega	8GB	Y	Requires DSDT modification to add QWordMemory
Bilbo571 (win-raid)	ASRock Fatal1ty Z97 Killer	Arc A750	8GB	Y	Requires DSDT modification to add QWordMemory
@Vlad00n	ASRock Z170 Extreme 4	RX 580	8GB	N
@Schlappenschleuder	ASUS SABERTOOTH Z97 MARK S	RX 5700 XT	8GB	Y
@denisdemaisbr	Machinist X99 MR9A Pro	RX 5500 XT	8GB	N
jo1902 (win-raid)	MSI H97M-G43	RX 6700 XT	16GB	N
@Kurtisdede	ASUS Z97-K	RX 6700	16GB	Y
@Gabus1983	MSI Z270-A PRO	RTX 3080	16GB	Y
@MissBendy	ASRock Z270M Extreme4	RX 6600 XT	8GB	Y
@CoderArceus	Gigabyte A320M-S2H	RX Vega 11 (iGPU)	1GB	N
Windius (win-raid)	Dell Precision Tower 7810	Arc A770	16GB	N
@Sir-Stroman	Asus Z170-A	Arc A750	8GB	Y
Scruffy (win-raid)	Dell R730	Arc A770	16GB	N
@rys995	Gigabyte B450M Gaming	RX 6700 XT	16GB	N	Downgrade BIOS to F52 (AGESA 1.0.0.6) to be able to flash modded latest BIOS (F64a used here)
@NedDarb	MSI Z170A Gaming M5	Arc A770	16GB	Y
@kaelso	Jingsha X99 D8	Arc A770	16GB	N
@zangliu2077	Gigabyte Z170-HD3	RX 5700 XT	8GB	Y	Need to downgrade my BIOS to F22C first (using Qflash) , then update the BIOS using modded BIOS with ReBAR inside (in this case I'm using modded F22C ). but “Invalid BIOS image” appears when flashing，Use the Efiflash_v0.87_DOS_Mod tool, get into FreeDOS, in the command prompt type in “efiflash NAMEOFBIOS.rom”，then it worked
@katapaltes	Gigabyte Z68MA-D2H-B3	RX 470 8GB	8GB	Y	Requires DSDT modification. Using U1C beta UEFI
@cdecaro3	Gigabyte GA-Z270P-D3	Arc A770 8GB	8GB	Y	Needed to use modified Efiflash running from FreeDOS to flash modified BIOS due to Qflash "Invalid bios image" error.
@janiss561	ASUS Z97-P	RX 6600	8GB	Y
@RRM5	Gigabyte AB350 Gaming	RX 6600	N
@u238	ASUS Z170-A	Arc A750	8GB	Y
@ravetank	ASUS ROG RAMPAGE V EDITION 10	RTX 3090	32GB	Y
@Fenivan	ASUS PRIME A320M-K	RX 6600	8GB	N
@driehoek91	ASRock H77 Pro4/MVP	RX 6800	16GB	Y	Requires DSDT modification. RX 580 8GB also works and OpenCore boots too
@400Ferrets	Dell Precision T3610	RTX 3060	8GB	N
@crashpb	ASUS Maximus VIII Hero Alpha	RX 6900 XT	16GB	Y	Resume from sleep doesn't work
@crashpb	ASUS Maximus VIII Impact	RTX 3070	8GB	Y	Resume from sleep doesn't work
@Nimayer	ASUS B150M-C	Arc A750	8GB	Y	Resume from sleep doesn't work. Flashed using flashrom
@X3Shadowknight	ASUS Z170I Pro Gaming	RTX 3060 Ti	8GB	Y	Flashed using AFUDOS
@anmolw	ASUS Strix Z270F Gaming	RTX 3070	8GB	Y	Flashed using AFUDOS backed up BIOS
Imperialz91 (win-raid)	ASUS Z97-P	RTX 3060 Ti	8GB	Y
SS_Seppuku (win-raid)	Gigabyte GAZ170X-Gaming 3	RX 6800 XT	16GB	Y	No display output from GPU until Windows boots
@drdanielwade	Gigabyte AORUS Z270X-Gaming 5	RTX 3060	16GB	Y	Resume from sleep works. Had to use modded Efiflash to flash the modified bios after booting into FreeDOS, Q-Flash gives Invalid BIOS error.
@RaduMemetea	HUANANZHI X99-F8D	RTX 3080	16GB	N
@KKallor	ASUS Z170-A	RTX 3080	16GB	Y	Had to use MMTool
@R1K1RU	ASUS X99 DELUXE II	RTX 3090	24GB	Y
@WillyTP	ASUS Z270A-Prime	RTX 3060 Ti	8GB	Y
@aquamacho1	Jginyue x99 Titanium D3	RX 6700 XT	16GB	N
@yudomsft	ASRock X99E-ITX/ac	RTX 4070	16GB	N	Resume from sleep works
@GloomySandwich	Asus Z97-A	RX 6800 XT	8GB	Y	16GB BAR doesn't work because of 32GB RAM. 6 beeps although system works
@ADTP	Gigabyte A320M-H	RX 6600	8GB	N	Resume from sleep works. Mobo supports Rebar for Zen 2 and Zen 3, used this to get it working on Zen+. Have to downgrade to BIOS version F52 (AGESA 1.0.0.6) for modded BIOS to install.
@Lock-The-Door	ASUS PRIME Z270-A	Arc A750	8GB	Y	Resume from sleep works. used /GAN to bypass verification
@Drakiel26	ASUS PRIME Z270-A	RX 580 4GB	2GB	Y	used /GAN to bypass verification
@ripkaby	ASUS Maximus VIII Extreme (Z170)	RTX 3080	16GB	Y	Resume from sleep works
@stetommy	MSI B250 Krait Gaming	Arc A770	16GB	Y
@Biogent	ASUS P8Z77 WS	RX 6700 XT	16GB	Y	Resume from sleep works. Strange fake (or no 🤔) "CSM disabled - No" but without ReBAR it turns to "Yes" without any changes in BIOS/EFI. There are warning beeps (1 long and 3 short) at startup and black screen due to Windows login screen (possibly to start GPU driver). But no any other errors or issues at all, ReBAR works perfectly.
@gwent98	MSI X99A MPOWER	RX Vega 56	8GB	N
@durdin85	MSI Z97A Gaming	Arc A770	8GB	Y	Sleep untested
@thierbig	MSI Z270 XPower Gaming Titanium	RTX 4070	16GB	N
@Dadovvv	Gigabyte GA-H110-D3A	RX 580 8GB	8GB	N	Everything works great except No bios display but Windows works
@pabloalber84	Dell Optiplex 7010 Q77	RX 580 8GB	8GB	Y	Requires DSDT modification. Resume from sleep works. See https://github.com/xCuri0/ReBarUEFI/issues/11#issuecomment-1585579241
@264-bit	ASRock Z97 Extreme3	RX 5700 XT	8GB	Y	Requires DSDT modification
@TodaLovErika	ASUS X99 E10G WS	RTX 4070	16GB	Y	Resume from sleep works. Arc A770 works too
@Affrounia	MSI Z97 PC MATE	RX 6700 XT	16GB	Y	Resume from sleep works
@Ckosmick	Gigabyte G1.Sniper Z170	RX 6700 XT	16GB	Y	Resume from sleep results in blank screen
@ochalam	MSI B450M PRO-VDH MAX	RX 580 4GB	2GB	N	Resume from sleep works
@aolszowka	ASRock Z77 Extreme4	Arc A380	8GB	Y	Requires DSDT modification. Resume from sleep works
@awesomekyle	Tyan S8030	Arc A380	8GB	N	Flashing required me to steps in the Annex of this page: https://winraid.level1techs.com/t/guide-how-to-flash-a-modded-ami-uefi-bios/30627. Video Option ROM needs to be set to Legacy to boot FlashROM
@Ph0rk0z	Supermicro X10DRG-OT+-CPU Broadwell	RTX 3090	32GB	N	Flash right from remote agent webui
@LatiosAeon	ASUS Prime Q270M-C	RTX 3090	32GB	Y
@lucash1978	Huananzhi X99-BD4	RTX 3060 Ti	8GB	N	Resume from sleep works
@Cartu-Nalgues	Gigabyte B450M H REV1.X	Arc A750	8GB	N
@DanielWhitt28	Asus Maximus IX Formula	RX 5700 XT 50th Anniversary	8GB	Y	Resume from sleep works
@E-DJ	Gigabyte Z77MX-D3H-TH	RX 6800	16GB	Y	Resume from sleep works. Requires DSDT modification
@EwanLight	MSI X99A Raider	RX 6700 XT	16GB	Y
@LaiSamy	MSI C236A WORKSTATION	RTX 3070	8GB	N	Resume from sleep works. Must enable 4G Decoding and disable CSM on first boot, or your'll get a vga debug and not boot.
@666cloudyy	QIYIDA HM70 LGA 1356	RX 470	4GB	N	Resume from sleep works, use 2GB BAR on Windows due to AMD driver bug
@Swiftb0y	MSI Z170 KRAIT GAMING	RX 6900 XT	16GB	Y	Resume from sleep works
@Acrivec	GA-Z170X-Gaming 7	RX 7900 XTX	32GB	Y	Resume from sleep works. Third attempt, my BIOS rolled back to factory F4 - and with that I've used efiflash_mod 0.65 on USB, using MS-DOS from rufus. Can't access bios. My guess is that this ReBAR is also 'enabled' on the integrated GPU (and it does not support it). Can't turn on secure boot.
@Fazzoc	Gigabyte B550I AORUS PRO AX	RX 5600 XT	8GB	N	Downgrade BIOS to be able to flash modified version
@NitrousZX	ASRock H61M-HG4	RX 580 4GB	2GB	Y	Requires DSDT modification
@Koekieezz	ASRock H97M Pro4	RX 580 8GB	8GB	Y	Resume from sleep works. Requires DSDT modification to add QWordMemory
@kagerou8124	TYAN S7109GM2NR-2T	RTX 3090	32GB	N
@sawok-git	Gigabyte Z170-HD3 DDR3-CF	RX Vega 64	16GB	Y
@kirusyaga	Gigabyte X299-WU8	Arc A750	8GB	Y	Use Q-Flash
@kgje	Supermicro X11DPI-NT	Arc A750	8GB	N	Modified BIOS updated using the BMC without issue
@RexSonic	MSI Z270 SLI PLUS	RTX 3070	8GB	Y	Resume from sleep works
@d4RkArchon	ASUS H170-PRO-GAMING	RTX 3070	8GB	Y	ASUS EZ Flash was blocking flashing of modified bios. Had to convert to rom file and flash with AMI flash tool.
@Baks456	ASUS P8Z77-V	RX 6600	8GB	Y	Resume from sleep works. Missing cursor in bios with enable rebar. When switching the BIOS on a video card (dual BIOS), you need to reset CMOS to work.
@Insane88	Gigabyte B365M DS3H	RTX 3060 Ti	8GB	Y
@Koekieezz	Gigabyte B75M-D3H	RX Vega 56	8GB	Y	Requires DSDT modification
@colepcsx2	ASUS X99-A	RTX 3090	32GB	Y	Resume from sleep works. After I extracted the CAP body and flashed it with the AMI Aptio IV BIOS tool, it worked all at once.
@98sec	GIGABYTE B450M DS3H	RX 5700 XT	8GB	N	Resume from sleep works. Downgrade BIOS to F52 (AGESA 1.0.0.6) to be able to flash modded latest BIOS (F64 used here)
@shrshnka	ASRock Z170 Pro4S	RTX 3070	8GB	Y	Resume from sleep works
@vinaoc	ASUS PRIME Z270-A	RX 580	8GB	Y	Resume from sleep works
@CNduan	Gigabyte Z97-HD3 2.1	RX 5700 XT	8GB	Y	Resume from sleep works
@andlbrei	ASUS SABERTOOTH Z170 S	Arc A770	16GB	Y	Sleep works after updating Intel ME. I could not get ASUS BIOS Flashback to work (selected file is not a proper BIOS), so I used AFUDOS to flash, worked great.
@ShockTime	ASUS Z170i Pro Gaming	RX 6700 XT	16GB	Y
@tiburcillo	Asus EX-B250M-V3	Pro W6600	8GB	Y	Resume from sleep works. Arc A770 8GB VRAM also works
@Flyw4vy	Optiplex 7010 MT	RX 5600	8GB	Y
@DarkRiDDeR	Huananzhi X79-ZD3RE V2	RX 590	8GB	N
@flamingleg	MSI Z170A PC MATE	RX 6600 XT	8GB	Y
@dbaggett262	MACHINIST X99-MR9D PLUS v2.0	RTX 3070	8GB	N	Used regular MACHINIST X99-MR9D shortcuts/info in Mi899 to run AMIFlash to extract stock BIOS and flash modded BIOS, since X99-MR9D PLUS (v2.0 or otherwise) is not in Mi899 database.
@Jun-TheTechShinobi	Dell OptiPlex 3010	Tesla M40	32GB	N	Below is the firmware section of my worklog, check the full blog post for hardware mod, server installing, and budget strategy for cheapskate.
@Baks456	Atermiter X99	RX 6700	16GB	N
@fyr233	TYAN S8030GM2NE	Moore Threads MTT S80	16 GB	N	This GPU requires resizeBAR. If not, the driver can't be installed. If the resizeBAR is 8GB, there will be many bugs. 16GB will be fine.
@ThanatosUA	Huanan X79 Gaming Deluxe	RTX 4070	16GB	N
@puuska	ThinkStation P500	RX 580 2048SP	8GB	N	Resume from sleep not working, black screen after resume. Flashing BIOS requires external programmer as the flash descriptor is locked and you cant flash anything except stock bios via lenovo's tool
@terminatorul	Gigabyte X399 AORUS Gaming 7 WiFi	RX 5700 XT	8GB	N	must be flashed from within UEFI setup, using QFlash option
@Rasmus715	MSI B150 Gaming M3	RX 6800 XT	16GB	Y	Resume from sleep works. Using in pair with Intel QTJ1 ES. Attaching BIOS with Re-BAR support and microcodes for Coffee Lake / ES here
@Karalux	ASRock IMB-180	RX 590	8GB	Y	Custom bios from AsRock to add above 4G decoding, IMB1801.70Rebar.zip
@FPSUsername	ASUS ROG Maximus VII Ranger	RX 6600	8GB	Y	Need to extract PCIeBus, PCIeHostBridge and NvramSmi from the UEFIPatch patched bios and replace the modules in an unpatched bios using MMTool 4.5. BdwUSB3.txt patch must also be included to fix keyboard issue. MAXIMUS-VII-RANGER-ASUS-3503-REBAR.zip
@fabriguzden	Gigabyte Z77X-UD5H	RTX 3060	16GB	Y	Requires DSDT modification. Z77XUD5H+ReBar+NVMe+4G Decode All Options Show.zip
@SignalSpectre	ASUS Rampage IV Formula	Arc A770	16GB	N	Resume from sleep works. X79 only needs DSDT patching if Linux. Don't use an ARC GPU with a 4 core ivy bridge cause no rebar can save you from the bad Intel driver optimization (in Overwatch I lost around 80 fps going from the RX570 to the ARC, in Apex the loss was about 60 fps, all of this with rebar enabled).
@jansebastiangr	ASUS ROG STRIX Z270G	Arc A770	8GB	Y	BIOS Flash ONLY works via AFUDOS (Rufus) USB Drive
@b800047	GIGABYTE B450M DS3H WIFI	Arc A770	16GB	N	Downgrade BIOS to F51 (AGESA 1.0.0.6) to be able to flash modded latest BIOS (F66b used here). shoutout to this video for giving me in idea on how i should install mine youtube.com/watch?v=waIjkovptXA
@jwagnervaz	Atermiter ZX-DU99D4	RX 5700 XT	8GB	N
@mrm1key	Asus Z170 PRO Gaming	Arc A770	16GB	Y
@YaZie96	ASRock Z97 Extreme 9	RTX 4070 Ti	16GB	Y	Resume from sleep works
@Hiuzuki	MUCAI P4-X99	RX 5500 XT	8GB	N	Make sure the options "BIOS Lock" and "Host-Flash Lock Down" ara disabled in BIOS. They are located in "Intel RCSetup Menu / PCH Configuration". Thanks to the Youtube user "@gabrielzika27"
@Thalhammer	Supermicro X10DRi-T	Arc A380	8GB	N
@Listenwzt	ASUS H97 PRO GAMER	RTX 4060 Ti	8GB	Y
@WarhammerTH	Gigabyte B360M D3P	MTT S80 16GB	16GB	Y	Using F14 BIOS
@77loop	ASRock X79 Extreme 9	RTX 3060	16GB	Y	Resume from sleep works
@xtomasnemec	ASUS TUF Z270 Mark 2	Arc A750	16GB	Y
@rootBrz	ASUS H110M-C	RX 580 8GB	8GB	Y	Used 4212 ver. of bios. Flashed .rom file through this guide, after patching .rom with UEFI Patch you need to extract body of the rom through UEFI Tool as shown in video. The size should be equal to 16384 KB, not 16386 KB. Also attached my modified bios in case someone needs it. bios.zip
@Le-choo	MSI B150i GAMING PRO	RX 6700	16GB	N
@NickjacksonD	ASUS H110M-C	Arc A750	8GB	Y	Followed the main guide, my bios file was 16777kb, installed anyway to test (same asus h110m-c board) and had black screen with gpu attached issues. Simply downloaded rootBRz 's file and installed it, and it worked!
@NitrousX	MSI X99A XPOWER GAMING TITANIUM	RTX 3080	16GB	Y	Flash using M-Flash over USB BIOS revision E7A21IMS.150
@itsmaxx1	Gigabyte A320-S2H (rev 3.0)	RX 6700 XT	16GB Y	Resume from sleep works. Need to downgrade BIOS to F2 to flash
@d0x360	Gigabyte X99A UD4 (WiFi) (rev 1.00)	RTX 3080 Ti	16GB	Y
@generaleramon	Biostar X370GTN	RX 5700 XT	8GB	N
@dima102russ	ASUS Z170 Pro Gaming	RX 5700 XT	8GB	Y	Resume from sleep doesn't work
@creble	Gigabyte B365M H	RTX 3060 Ti	8GB	8GB	Y	Resume from sleep works
@Dantrigger	ASUS Maximus IX Code	RTX 4090	32GB	Y
@shikulja	Asus Maximus IX Formula	RX 580 8GB	8GB	Y	Used Bios unlock (uefi) + FPT. The bios unlock + flashrom(dos internal) method also worked. After flashing Nvme+sata hard drives are not detected. Hard reset safe_boot+clear_cmos MB buttons helps.
@SlAvEnChIk	Asus Maximus VIII Ranger	RTX 4070	16GB	Y	Need to enable iGPU in BIOS
@Eugene-Dubovski	ASRock Z77 Pro4-M	Arc A750 8GB	8GB	Y	Requires DSDT modification. Resume from sleep works
@tiejam	ASUS Maximus VII FORMULA	RTX 4080	16GB	Y
@predprey2	ASUS Sabertooth Z77	RTX 4070 Ti	16GB	Y
@Pereira2004	Gigabyte AB350 gaming 3	RX 6700 XT	16GB	N	Had to downgrade BIOS to F31 to be abble to use Q-Flash and flash last one (F52n) with rebar mod inserted
@Supersiegger16	Gigabyte AX370 Gaming 3	RX 590	8GB	N	Flashing modified BIOS with FlashDOS 1.2 worked perfectly (while already having the newest BIOS (F51m) !) -> no need to downgrade due to security restriction of AGESA :)
@gj13	Gigabyte B450 Aorus Pro Wifi (rev 1.x)	RX 6700 XT	16GB	N	Resume from sleep works. didn't pass Q-Flash integrity check, so I flashed with Flashrom from winraid.level1techs.com/t/tool-flashrom-v1-2-dos/36544
@turkey758	ASUS P8Z77-M	Arc A770	16GB	Y	Resume from sleep works
@PeanutAria	GIGABYTE X470 AORUS GAMING 7 WIFI	RX 580 8GB 8GB		N	Latest bios (F63i) flashed using flashrom 1.2 without removing any extra modules
@linuskim07	MSI Z170A-S02	Arc A750	16GB	Y	Resume from sleep works. Motherboard already has Above 4G decoding features, just enabled and disabled CSM by enabling Win8.1/10 WHQL Support enabled.
@nuclearmistake	ASUS Prime X299-A	RTX 3090	32GB	Y	I had to flash by removing the CAP header (making it a ROM) with uefitool as outlined on winraid.level1techs.com/t/guide-how-to-flash-a-modded-ami-uefi-bios/30627 and then use afuwinx64.xe whatever.rom /GAN to flash. However, my flashback button does not light up when pressed, so I couldn't get flashback to flash the CAP.
@Mullin	ASUS Z97 Pro Gaming	RTX 3060 Ti	8GB	Y
@SebVig	ASUS Rampage V Extreme	RTX 3090	32GB	Y	Need to use MMTool method to avoid BIOS corruption #98
@ebkess2	MSI B250M MORTAR ARCTIC	Arc A770	16GB	Y	Had to change "Integrated Graphics Devices Configuration -> Initiate Graphics Adapter" to IGD because at least this MSI board wont automatically fall back to the iGPU if the UEFI fails to find the dGPU. Had to go into Device Manager in Windows and disable the iGPU or games that have XeSS (doesn't have to be enabled) will crash with varying errors in Event Viewer.
@cacafuti8888	ASUS MAXIMUS VIII RANGER	RX 580 8GB	8GB	Y	Resume from sleep works
@JamSWACD	ASUS X99E-WS	Radeon VII	16GB	Y
@Altair2009	ASUS Z170A	RX 6700 XT	16GB	Y	flash using afudos 3.0.4, pad issue with uefi patch have to use mmtool 5 (mmtool 4.5 cant save rom error)
@abarreraj	ASUS Gryphon Z97 TUF	Arc A580 8GB	8GB	Y	Resume from sleep works
@Ahriman0	ASUS Strix Z270F Gaming	RTX 3080 Ti	16GB	Y	Flashed using AFUDos
@iknightpl	ASUS B150M-PLUS	RX 580 2048SP	8GB	Y	1,there is no logo on system boot. 2, when set bar size is too small, It will cause system halt.
@notsyncing	Supermicro C9X299-RPGF-L	Arc A770	16GB	Y	Resume from sleep works. Though this motherboard has Above 4G Decoding and Re-sizable BAR options in BIOS, but the BAR size is only 256MB even after these options enabled. So this patch is needed.
@Balrogos	Asus PRIME B250M-K	RX 570 8GB	8GB	Y
@tumo07	BIOSTAR H310MD PRO (ver 6.x)	RX 6700 XT	16GB	Y
@Ross0907	ASUS A320m-K	RX 550	1GB	N
@zhiwoo	Dell Precision T5810	Arc A750 8GB	8GB	N	External EEPROM flasher required. Dell BIOS flasher would not allow the flashing of modified BIOS.

[xCuri0]

@somexhey you're sure CSM is off and 4G decode is on ? And try connecting a monitor to your iGPU during boot because one user fixed this issue by doing that.

if those don't work you can try this patch which i made before but idk if it will help

# PciBus | Don't downgrade 64-bit BARs to 32-bit (Coffee Lake)
3C1DE39F-D207-408A-AACC-731CFB7F1DD7 10 P:A80274334038AF95:A802EB334038AF95

[somexhey]

@somexhey you're sure CSM is off and 4G decode is on ? And try connecting a monitor to your iGPU during boot because one user fixed this issue by doing that.

if those don't work you can try this patch which i made before but idk if it will help

# PciBus | Don't downgrade 64-bit BARs to 32-bit (Coffee Lake)
3C1DE39F-D207-408A-AACC-731CFB7F1DD7 10 P:A80274334038AF95:A802EB334038AF95

Yup, CSM is off and 4G decode is on Sadly, I can't connect my current monitor to iGPU because there is no VGA port on the monitor itself, patch applied tho, will keep you updated, thanks

[somexhey]

@somexhey you're sure CSM is off and 4G decode is on ? And try connecting a monitor to your iGPU during boot because one user fixed this issue by doing that.

if those don't work you can try this patch which i made before but idk if it will help

# PciBus | Don't downgrade 64-bit BARs to 32-bit (Coffee Lake)
3C1DE39F-D207-408A-AACC-731CFB7F1DD7 10 P:A80274334038AF95:A802EB334038AF95

No luck, sadly

Patch applied successfully, setting BAR size to 2GB leads to VGA debug (no POST), setting BAR size higher than 2GB leads to system boot, but no image (I know that system boots, because there is sound)

Any ideas what might cause that? I will try to get VGA -> HDMI cable soon to test the fix you mentioned earlier tho Maybe I should try enabling iGPU in BIOS at all? It's currently disabled because I don't use it

[xCuri0]

@somexhey

setting BAR size higher than 2GB leads to system boot, but no image (I know that system boots, because there is sound)

does this happen without using the patch too ? I see others with the same problem but they eventually get video output once Windows boots. What is your GPU ?

[somexhey]

@somexhey

setting BAR size higher than 2GB leads to system boot, but no image (I know that system boots, because there is sound)

does this happen without using the patch too ? I see others with the same problem but they eventually get video output once Windows boots. What is your GPU ?

Yes, same happens with no patch applied. GPU: MSI Nvidia RTX 3060 12Gb

I have two monitors connected (one primary via HDMI and a TV via DisplayPort), both monitors are not showing any signs of life after setting BAR size higher than 1Gb

[dsanke]

Test with ASUS Z170-A(PciBus patched), RX 580 works with 8GB BAR size, RTX 3060 Mobile(a desktop card with mobile chip for mining) works with 8GB BAR size(The card can not boot without Above 4G and the BAR size forced to 8GB even when I didn't use ReBarDxe), 5600 XT works with 8GB BAR(BAR0 8G and BAR1 256M) but can not wake from sleep in Windows(Set BAR size not higher than 1024M have normal sleep).

[xCuri0]

@dsanke Theres's an override in the module to fix 5600 XT's max BAR size being limited to 1GB. The module is heavily based on Linux kernel source adapted to UEFI so it includes the override from it. You can see more info about it here https://lore.kernel.org/lkml/20210305120859.501084746@linuxfoundation.org/

A REBAR size quirk for the Sapphire Radeon RX 5600 XT PULSE for AMD Smart Access Memory (Resizable BAR) as it only advertised 256MB/512MB/1GB but it also supports 2GB/4GB/8GB so a rebar size quirk is now added to fully access the BAR0.

Using a 5600 XT on a new motherboard with ReBar support will have the 1GB issue. But this module contains an override for it.

Since it appears to not work properly with Windows maybe I should remove it ? I guess the RX 580 and 3060 don't have any sleep issues.

If possible test a card with proper ReBar on it (RX 580 will work) to make sure that it's a issue with Windows and not the BIOS.

[originalm19]

Running on the ASUS P8H61-M LX2 R2.0 motherboard, it was necessary to apply the patches, as it did not go pass the post after configuring the rebar in a size greater than 4gb. Now it works perfectly, but I can't configure it for values greater than 8gb.

[dsanke]

I guess the RX 580 and 3060 don't have any sleep issues.

Yes the RX 580 and RTX 3060 have normal sleep. Will test it on official ReBar BIOS.

[xCuri0]

@originalm19 that's normal because it's 8GB VRAM GPU

[xCuri0]

@dsanke you can get a build without the override here https://github.com/xCuri0/ReBarUEFI/actions/runs/3667380099. i recommend using the windows built artifact but the linux one should also work if you want to test it.

[Divin1ty666]

@xCuri0

@Divin1ty666 try this improved pci allocation unlikely but could fix the usb issue

# PciHostBridge | Replace 32/48GB - 63GB MMIO region with full use of 64GB address space (Haswell).
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

If it doesn't find anything since you have applied the previous patch use the below

# PciHostBridge | Replace 32/48GB - 63GB MMIO region with full use of 64GB address space (Haswell).
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

Hey, sorry was only able to try and test all this today.

So, the first patch can't be applied at all.

The second patch did apply, but mobo can't overclock RAM with it - with all my settings kept ram will always be 1333mhz and with default timing no matter what frequency\timings you set. That is before you apply any value with Rebarstate.exe. And after applying 14-value it wouldn't boot at all.

[xCuri0]

@Divin1ty666 thanks for testing it I'll try to fix that

[Koekieezz]

Rebar working on GA-H77-DS3H Rev 1.1, must use Patch for PciHostBridge + PciBus + DSDT Patch. RX 590GME with Nimez Driver 22.11.2SE cause i love nimez <3

Also i tested my personal 3060Ti too, it worked, i dont have screenshot due to need to test the 590GME real quick :p

[dsanke]

MSI B150M PRO-VDH with RTX 3080 confirm work(I am using the Linux compiled dxe file this time.) and do not need UEFIPatch. I think all MSI 100/200 series behave the same. And unlike ASUS, the ReBarState cleared with CMOS clear, so no need to tweak the default setting of Above 4G and CSM.

[necr0n]

many thanks for the repo and the documentation!

Asus Z170-P, RTX3090, patched, 32GB, no difference from Asus Z170-P D3

[dsanke]

Test on ASUS H110M-K with old BIOS 2003 which have a hidden Above 4GB MMIO BIOS assignment option(set it enabled by default). RTX 3080 works. Need UEFIPatch.

[JonasGMorsch]

Huananzhi X99-F8 This Bios V11

RX 580 2048SP and RTX 3060 Ti

4096MB and 8192MB

No UEFI Patch

Thank you for your work.

[retro-future]

Hey guys I have Huanan x79 motherboard just enabled the patch and after i forgot the turn off CSM, I turned off it then started the system, in gpuz it shows that resizable bar enabled but gpu/drivers suppot show "no".... My gpu rx580.... I have seen that some guys make it work on this gpu..... Does that i forget to turn off csm in first boot affected it somehow?

[xCuri0]

@retro-future the wiki page common issues shows how to enable it on RX 580. I have it working on my RX 580 using that method if it's working it will show enabled in Radeon Software. GPU-Z is wrong about RX 580 being unsupported

[captainmaged]

Please help me I need to mod a HP 600 G1 TWR bios to be able to have resizable bar enabled.

[xCuri0]

@captainmaged if you want help ask on win-raid or somewhere else not in GitHub issues.

[retro-future]

@retro-future the wiki page common issues shows how to enable it on RX 580. I have it working on my RX 580 using that method if it's working it will show enabled in Radeon Software. GPU-Z is wrong about RX 580 being unsupported

Thanks for reply, I just tweaked Registry and it worked

[aschor]

Hi, new success here : 👍

asrock X99 taichi, GPU nvidia RTX3090 .

Bar sizes : 2Gb => no good, boot loop before bios 4Gb => OK Unlimited => OK

NOTES : 1) I needed to enable 4G decoding, disable CSM, and it was REQUIRED to NOT ENABLE the "above 4G decoding patch" setting in the bios, otherwise I would not get post/grub/display output until windows had booted 2) clear cmos does clear the rebarstate apparently

Edit : blender-benchmark results : 1) without rebar : 5613 (blender 3.3.0) 2) WITH rebar@Unlimited : 5762 (blender 3.3.0) => 2.65% perf increase

[magicalz]

CPU: E3 1245 V3 MOBO: Gigabyte B85M-D3H(rev.1.2) Bios: F3AE GPU: ASUS 5600XT TUF

My Gigabyte B85M-D3H(rev.1.2) can enable the ReBar after adding ffs module(BAR size must<=1G ), even if Above 4G Decoding is not enable(more detail I've mentioned here: https://github.com/xCuri0/ReBarUEFI/issues/14#issuecomment-1364638770)

I try the UEFIPatching, only "# PciBus | Remove <16GB BAR size limit (Ivy Bridge/Haswell)" patch works. I also have a look at DSDT patching, but my DSDT.dsl is different from the wiki, I can't find the "CreateQWordField" keyword. DSDTMod.dsl.zip My modded bios: modded_bios_F3_ReBar_patched.zip

I've tried the other bios version, but all the bios I can find at Gigabyte official site have the same issue.

[Koekieezz]

@magicalz DSDT Fix (as for now) are only needed for the PciHostBridge that got patched. If yours didnt have anything to patch at PciHostBridge then it is not necessary to fix anything.

Also for RX 5600 XT, its been an issue for addressing the memory, unless there is someone who could add/mod/patch the vbios itself to actually use 6GB, there has been no such solution.. so yeah.

[xCuri0]

@Koekieezz

Also for RX 5600 XT, its been an issue for addressing the memory, unless there is someone who could add/mod/patch the vbios itself to actually use 6GB, there has been no such solution.. so yeah.

ReBarUEFI has a workaround for it in the current release. I removed it now tho because dsanke reported it causes sleep to stop working.

[GhoSt-1992]

First of all: a big thank you @xCuri0 and @Mak3rde! My config: Intel QQBZ (i9 9900 ES), Asus Maximus VIII Hero (z170 chipset + CoffeeTime Mod), Radeon RX 480 8Gb, 32 Gb of RAM. Everything works just fine. The only crucial thing is to use patch "Don't downgrade 64-bit BARs to 32-bit (by @Mak3rde)" - it seems like all Asus MoBos on Z170 demand this patch. Otherwise my computer doesn't go through POST initialization.

[xCuri0]

@GhoSt-1992 I didn't know Resizable BAR worked on Windows 7 too. Did you get any performance gain from it ?

[magicalz]

@Koekieezz

Also for RX 5600 XT, its been an issue for addressing the memory, unless there is someone who could add/mod/patch the vbios itself to actually use 6GB, there has been no such solution.. so yeah.

ReBarUEFI has a workaround for it in the current release. I removed it now tho because dsanke reported it causes sleep to stop working.

I use the ver0.2 with 5600XT, windows sleep works well.

[Koekieezz]

@Koekieezz

Also for RX 5600 XT, its been an issue for addressing the memory, unless there is someone who could add/mod/patch the vbios itself to actually use 6GB, there has been no such solution.. so yeah.

ReBarUEFI has a workaround for it in the current release. I removed it now tho because dsanke reported it causes sleep to stop working.

I use the ver0.2 with 5600XT, windows sleep works well.

All 6GB BAR is able to do with windows sleep? also what win ver did you use?

[magicalz]

@Koekieezz

Also for RX 5600 XT, its been an issue for addressing the memory, unless there is someone who could add/mod/patch the vbios itself to actually use 6GB, there has been no such solution.. so yeah.

ReBarUEFI has a workaround for it in the current release. I removed it now tho because dsanke reported it causes sleep to stop working.

I use the ver0.2 with 5600XT, windows sleep works well.

All 6GB BAR is able to do with windows sleep? also what win ver did you use?

No, as I mentioned in the post, I can't enable Above 4G Decoding, only 1GB BAR size is able to set. Win10 22H2, 19045.2364

[xCuri0]

@magicalz you won't have sleep issues on 5600 XT unless you use more than 1GB BAR

[GhoSt-1992]

@GhoSt-1992 I didn't know Resizable BAR worked on Windows 7 too.

@xCuri0, oh, I don't know too 😅. It is not Windows 7, but Windows 10 21h2 just in pair with WindowBlinds theme :D

[TiZmSpectrum]

@xCuri0 you are a legend! this works epicly on my Asus X99-A mobo

[VictorS333]

X79 Huananzhi "Green" RX580X 8GB N (NimeZ 22.11.2)

[LZeugirdor]

This works with the Gigabyte Aorus B550M Pro-P Revision 1.0 motherboard

[Zhongli0401]

ahh guys can i do this experiment in hp motherboard ?

[robert789011]

Msi Z97 Gaming 3 with RX 6800 no patches were required but had to enable Above 4G Decoding with the second method since on this motherboard this option is hidden.

[SiliconExarch]

Working on the latest beta BIOS for my ASUS X99-S (4101) with a GeForce RTX 3070. BAR size set to unlimited in ReBarState.exe and showing up as 8GB as expected given the available VRAM.

UEFIPatch was required.

[therealRandomGenericDude]

MB: Supermicro X9DRI-LN4F+ BIOS v3.4 GPU: Asrock Intel ARC A380 Tested 16GB REBAR UEFI Patch not required

It was an odyssey but it works on a dual E5-26XX V2 board (Supermicro X9DRI-LN4F+ BIOS v3.4) which is an Ivy Bridge-EP platform.

Deviation from the "official" instructions is required as there are issues with the padding in the firmware image that can't be resolved using UEFItool.

Instead of using UEFItool, I needed to use the official AMI tools, so while I was there, I added in an NVME module as well.

The board doesn't seem to have the capability to fully disable CSM, presumably because it has no concept of secure boot.

I tested up to 8GB rebar and it did not require any patching. They wouldn't have worked anyway as there's nothing for this platform.

EDIT - I just enabled 16GB REBAR but the GPU still only negotiated 8GB. On my Threadripper Pro based machine, it only set 4GB. Perhaps that's due to that platform having pcie4 vs pcie3 this one has.

Interestingly, I was doing this to setup an Intel ARC A380 for passthrough and with Native Windows it requires at least 8GB for rebar as otherwise the driver complains it's not supported even though GPU-Z suggests it is. I can confirm the driver wont use it with less than 8GB set on this platform.

[xCuri0]

@therealRandomGenericDude Arc A380 is a 6GB GPU so it doesn't need more than 8GB BAR and the maximum BAR size it supports is 8GB

[mirh]

I don't want to be that guy, but while the 2500k doesn't have enough lanes to run the full pcie 3 speed, the B75M-D3H is still a motherboard with native pcie 3 (trivia: despite what wikipedia likes to claim, there was actually a good number of 6 series chipsets supporting it too). So.. I guess in a sense we could still argue to have learned something (the CPU doesn't really count much) but it's def not that "2.0 systems" could be workable. Even though it could even be, I don't know.

[xCuri0]

@mirh On the 2500k GPU was still running Gen2 because it's connected directly to the CPU. Chipset doesn't really matter in this case.

Of course would be better to test on a fully Gen2 system but I'm sure it would work. Even one of the few P45 motherboards with UEFI should work probably limited to 1GB BAR though

[SEt-t]

TOLUD set to 1GB should allow 2GB BAR even without 64-bit BARs. It worked on my ASUS Z170-P D3 before the patch for downgrading BARs.

[xCuri0]

@SEt-t are they are side effects of setting TOLUD to 1GB ?

[SEt-t]

As far as I know, only limiting visible RAM to 1GB to 32-bit OS with artificial limitations (non-server Windows; server and Linux are not affected).

[WillyTP]

ASUS Z170-WS & Intel ARC A770, BAR size set to unlimited and the full 16GB worked

Also works on a ASUS Z170 Sabertooth MK1

Hi @latisleon, would you be so kind to tell me how toy managed to flash the modded cap files? Flashing via EzFlash refuses the modded bios, while Afuwinx64 returns an error in loading drivers. Thank you

[Feyd1364]

@WillyTP Flashing ASUS MB's with modified cap files can be done with USB BIOS FlashBack. Any other official method will always fail since it checks checksum and that will differ after modification. USB BIOS FlashBack only needs cap file to be named correctly for your mb and that USB stick is formatted to FAT32 with only one partition.

@xCuri0 thank you very much for your awesome work. Asus Maximus VIII Hero (Z170) with RTX 4070 Ti, patched bios and ReBAR is working on unlimited setting via ReBarState

[WillyTP]

Hi @Feyd1364, Thanks for your advice. I read that via AI Suite it could have been possible to flash it by changing original bios file with the modded one after check. As it seems it didn't work even if something got flashed (I got Bios setup error on reboot). Unfortunately Z270a Prime doesn't support USB Flashback. Thank you anyway