pkg file and run it in MacOS 10.12 or higher. Maxwell (GM107) N15P-GX-A1? - non-function with MacOS cannot trust sources with GPU Variant Please use High Sierra to update your BootROM to latest version. The GTX880M is the first 8GB VRAM card to work in our machines! I now have as much vram as system ram. I'm happy to report that macOS sees all the ram. It is boosting fully even at base clock speeds.
When I purchased this card, the rivets were very long and kept too much of the GPU away from the heatsink surface. It was thermal throttling early as it sensed an overheat situation. When I removed the rivets, and used screws to secure it, I was able to get a much tighter seal and the card boosted properly.
Tested on a 2011 iMac using High Sierra 10.13.6. Please feel free to test on other MacOS versions, I will update this post as necessary with success/failures.
These ROMs do not require a 3rd party bootloader like OpenCore. They will require a modification of the base AppleIntelPanelA/ApplePanels/F10Ta007 brightness stepping. The frame-buffer depth issues remains for now, and can be temporarily corrected by entering a sleep cycle.Īs previous, these roms should bring back. If you have a different machine, your panel ID can be found by going to System Preferences > Displays > Color > Open Profile > mmod The above data pattern will allow for a wider span of steppings for the brightness control and utilizes more of the capacity of the HD3000.ĭrag your modded kext into Kext Utility, allow it correct permissions There you find several Apple LCD profiles.ĪBEABgALABQAHAAnADMAPwBOAFwAZwBzAIEAkQClAL8A2wD/ĪBEAAgA3AF8AigCzAOsBJAFnAakB1AIJAlQCogL4A00DlgRpBGk= Scroll down to: IOKitPersonalities > AppleIntelPanelA > ApplePanels Navigate to S/L/E (System/Library/Extensions) MacOS Catalina: requires you to make root writeable: sudo mount -uw / Turn computer on, hold down Command(⌘)-R ⦁ Genuine ‘gray’ early-boot screen (stage 1 & 2 progress bar) To Baillargeau, and anyone else who has been a key member of the never-ending modifying, testing, and evaluation of the files, workarounds, and procedures on this thread: 16bit resolution glitch of UGA_DRAW_PROTOCOL - temporary solution: activate a sleep cycle and return, this should now clear the issue.ĩ-4-2020: please note the 870M_6GB_UGA.rom is experimental and in testing phases for those interested and have the card.ĥ-3-2021: I've removed 870M_Clevo_BR.rom because it is not functional and replaced it with GTX870M_V1.rom, appreciate for testing.
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