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Author Topic: RX 460 Mac efi rom for Sapphire PC RX 460?  (Read 1529 times)
nekton1
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« on: May 30, 2017, 12:58:58 AM »

Has anybody built one of these RX 460 efi ROMs using the mobile 460 efi rom Apple is using in the recent MacBook?  I know the RX 460 works OOTB but I'd like an efi boot screen too if possible. It's beyond my skill level and available time but I'd happily test for someone else.
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Fl0r!an
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« Reply #1 on: May 30, 2017, 08:26:51 AM »

Apple has used GOP EFIs in all recent Macs, so they won't be useful for the cMP. Besides that I'm not even sure that has made an EFI driver for these GPUs, I think all EFI video output is handled by the iGPU.
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nekton1
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« Reply #2 on: May 30, 2017, 11:18:14 PM »

Thanks Fl0r!an.  I suppose I'll have to live with no efi screen until 2018/19 when the nnMP arrives.
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nekton1
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« Reply #3 on: June 01, 2017, 10:09:55 PM »

Testing has shown that the RX 460 for a PC is in fact NOT perfect OOTB in a MacPro—just occasionally when switching users, I'lll get a screen of snow and have to restart to get a normal screen again.
It happens in about 1 of 10 user switches.
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