I think I found something interesting...
I've been wondering if injecting the framebuffer for the W6900X was resulting in loading of the PowerPlay Table for that card. I've long suspected that Apple underclocks or undervolts their CPUs and GPUs to balance power consumption and thermal properties. That could account for why this framebuffer patch doesn't result in 100% restoration of performance.
I tried injecting the Soft PowerPlay Table for my card and it seemed to have restored performance back to my 12.2.1 level. I would consistently score around 180K-200K in GB Metal before, and now with the W6900X framebuffer patch, I'm getting around 140K-160K. With the SPPT, it is back up to 180K.
Further testing is required.
Over in my Windows boot, I basically dumped the GPU ROM with GPU-Z, and using various utilities, I extracted the PowerPlay Table from the ROM file. This is usually done when overclocking the card, but I just wanted the stock PPT.
More testing is required, and I wanted to know if anyone else could try and confirm with their cards.
Edit:
@gandem successfully applied the SPPT to his setup, and noticed improved scores.
Before SPPT:
View attachment 544368
After SPPT:
View attachment 544371
This is the entry in my config.plist
View attachment 544370
This is my SPPT (in hexadecimal format):
Cautionary Notes - Please read before you attempt this!
1. You should only use the BIOS that was extracted from your card's ROM. If you use the wrong PPT, you could damage your card. Note that most cards have 2 BIOS settings, controlled by a physical switch on the card -- one is for overclocking or performance, and the other is for silence or powersaving. To get the optimal performance from your card, you want to dump the BIOS from the overclocking/performance setting.
2. If you don't want to dump your BIOS, you could go to TechPowerUp to find the ROM dumps for many cards. Be mindful that you should try to match your card exactly, but there is a risk that there could be minor differences.
This is only for use with the PowerColor Red Devil RX6900XT Ultimate (XTXH)!! You should use the SPPT from the ROM extracted from your card! You can find the ROM dumps for many cards over in TechPowerUp.
Code:
A6 09 0F 00 02 22 03 EE 09 00 00 9E 42 00 00 80 00 18 00 00 00 1C 00 00 00 00 00 00 76 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00 01 00 00 00 0D 00 00 00 9F 0A 00 00 B0 04 00 00 E8 03 00 00 94 07 00 00 C9 04 00 00 78 05 00 00 C9 04 00 00 78 05 00 00 B0 04 00 00 C1 04 00 00 C1 04 00 00 2A 03 00 00 C1 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 F4 01 00 00 E0 01 00 00 61 00 00 00 26 02 00 00 3D 01 00 00 6B 01 00 00 3D 01 00 00 6B 01 00 00 A2 01 00 00 E7 01 00 00 E7 01 00 00 2C 01 00 00 E7 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 81 00 00 00 10 00 00 00 1E 00 00 00 01 01 01 01 01 01 01 01 01 01 01 01 01 01 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 A0 0F 00 00 A0 0F 00 00 00 00 00 00 00 00 00 00 00 00 00 00 A0 0F 00 00 20 05 00 00 20 05 00 00 0F 00 00 00 E4 0C 00 00 E4 0C 00 00 64 00 00 00 6E 00 00 00 01 00 00 00 01 00 00 00 01 00 00 00 01 00 00 00 01 00 00 00 64 00 00 00 64 00 00 00 64 00 00 00 64 00 00 00 64 00 00 00 64 00 00 00 64 00 00 00 64 00 00 00 64 00 00 00 64 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 F4 01 00 00 F4 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 F4 01 00 00 A2 02 00 00 A2 02 00 00 0A 00 00 00 FA 00 00 00 E8 03 00 00 19 00 00 00 32 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 19 00 00 00 0A 00 00 00 19 00 00 00 0A 00 00 00 19 00 00 00 0A 00 00 00 19 00 00 00 0A 00 00 00 19 00 00 00 0A 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 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9B 84 3E 44 34 9A 3E 43 AD 09 BE 3D 0F 36 3F F1 00 00 00 00 01 04 00 CD CC AC 3F E3 A5 9B BD 6F 81 E4 3E CA A6 CC BE 04 21 49 3F C0 01 00 00 00 00 02 00 00 00 80 3F 00 00 00 00 72 C4 7A 3E 4C 89 84 BE DC BA 43 3F 11 02 00 00 00 00 02 00 09 8A AF 3F 29 5C 0F BD 85 CE EB 3E 10 CC C1 BE 47 20 46 3F 9B 01 00 00 00 00 02 00 6A DE 89 3F B8 1E 05 3E 8E 75 91 3E 28 49 57 BE E4 2C 3C 3F 73 01 00 00 00 00 02 00 09 8A AF 3F 29 5C 0F BD 85 CE EB 3E 10 CC C1 BE 47 20 46 3F 9B 01 00 00 00 00 02 00 6A DE 89 3F B8 1E 05 3E 8E 75 91 3E 28 49 57 BE E4 2C 3C 3F 73 01 00 00 00 00 02 00 7D 3F 95 3F DD 24 06 3E 1D 77 AA 3E EE 77 68 BE C9 1F 3C 3F 55 01 00 00 00 00 02 00 6A BC 74 3F AE 47 61 3E 73 2E 65 3E 52 ED 13 BE D7 2F 38 3F 43 01 00 00 00 00 02 00 6A BC 74 3F AE 47 61 3E 73 2E 65 3E 52 ED 13 BE D7 2F 38 3F 43 01 00 00 00 00 02 00 0E 2D 12 3F 9A 99 D9 3E 27 83 A3 3D 8D 28 ED BC E7 E3 32 3F B6 00 00 00 00 00 02 00 6A BC 74 3F AE 47 61 3E 73 2E 65 3E 52 ED 13 BE D7 2F 38 3F 43 01 00 00 F4 01 9F 0A 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 6B 01 C5 05 00 00 00 00 00 00 00 00 00 00 00 00 3D 01 F2 04 00 00 00 00 00 00 00 00 00 00 00 00 E0 01 B0 04 00 00 00 00 00 00 00 00 00 00 00 00 61 00 C9 01 A2 02 E8 03 A2 01 B0 04 00 00 00 00 00 00 00 00 00 00 00 00 E7 01 C1 04 00 00 00 00 00 00 00 00 00 00 00 00 E7 01 C1 04 00 00 00 00 00 00 00 00 00 00 00 00 2C 01 2A 03 00 00 00 00 00 00 00 00 00 00 00 00 E7 01 C1 04 00 00 00 00 00 00 00 00 00 00 00 00 26 02 94 07 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 2A 6F 4F 3F 49 BA E6 3D 9C 33 22 3C 2A 6F 4F 3F 49 BA E6 3D 9C 33 22 3C 2A 6F 4F 3F 49 BA E6 3D 9C 33 22 3C 90 BD B2 3F 7B 31 34 3E 5F 98 2C BF 90 BD B2 3F 7B 31 34 3E 5F 98 2C BF 9F 0A 00 00 B0 04 00 00 E8 03 00 00 94 07 00 00 F2 04 00 00 C5 05 00 00 F2 04 00 00 C5 05 00 00 B0 04 00 00 C1 04 00 00 C1 04 00 00 2A 03 00 00 C1 04 00 00 00 02 03 03 78 05 00 00 4C 01 FA 01 F0 0A 80 0C 8C 0A 80 0C 48 0D 48 0D 88 13 18 15 18 15 18 15 F4 01 20 03 F4 01 01 00 01 02 5D 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 A8 16 52 16 FC 15 A7 15 51 15 FB 14 A5 14 4F 14 F9 13 A4 13 4E 13 F8 12 0C 12 20 11 34 10 48 0F 00 00 00 00 03 02 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 03 01 06 36 01 6B 02 37 00 3C 00 90 01 90 01 90 01 90 01 90 01 90 01 90 01 00 00 00 00 90 01 23 00 08 07 98 08 B8 0B 00 00 59 00 F4 01 00 00 01 00 01 02 00 00 00 00 00 00 00 00 00 00 03 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0D 54 86 3D BC 05 D2 BD 1F 80 14 3E 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 9A 99 99 3E 00 00 C0 3F 33 33 13 40 00 00 20 40 66 66 46 40 0A D7 23 3D DD 24 86 3D A2 45 B6 3D 39 B4 C8 3D C7 4B B7 3E 00 00 00 00 00 00 00 00 00 00 00 00 E5 61 21 BD 04 56 8E 3E C5 72 2B BE E8 00 E8 00 01 01 00 00 00 00 00 00 E8 00 E8 00 19 00 19 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 B8 0B 90 01 00 00 34 80 37 3B 9F AB CD 3E ED 0D 3E 3C 75 93 F8 3E 00 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1E 06