Moderators carlo_67 Posted Wednesday at 06:19 PM Moderators Share Posted Wednesday at 06:19 PM Put the 4090 in the PCIe x16_1 slot Place the second GPU in the PCIe x16_3 x4 slot, but I doubt you'll have room at the bottom to insert it. sorry my english 1 Link to comment Share on other sites More sharing options...
Supervisor fabiosun Posted Wednesday at 07:23 PM Author Supervisor Share Posted Wednesday at 07:23 PM @khileare you sure that rx6600 is full working? have you tried it with other os? 1 Link to comment Share on other sites More sharing options...
khile Posted Wednesday at 07:51 PM Share Posted Wednesday at 07:51 PM 26 minutes ago, fabiosun said: @khileare you sure that rx6600 is full working? have you tried it with other os? so moved to slot 3 on pci-e and still not seen by Mac but works fine in windows and I can mirror or set it as main display and it works fine Link to comment Share on other sites More sharing options...
Moderators carlo_67 Posted Wednesday at 08:38 PM Moderators Share Posted Wednesday at 08:38 PM Is the resize bar enabled in the BIOS? Also run a CMOS to force detection and reset the NVRAM on the Mac, reboot from Mac and see what the card says under Information/Graphics and Monitor. Basically, it should see it. I get an error without WhateverGreen.kext. however it is the 4090 that predominates the slots, you have to try to temporarily remove it and try only the 6600 in pcie 1, once the mac is started insert it in the device properties of Opencore and put the boot arg nv_disable, put them back as they are now and try to start 1 Link to comment Share on other sites More sharing options...
Muhammed Salah Posted yesterday at 03:03 AM Share Posted yesterday at 03:03 AM Please Update EFI Folder to support macos 26 installer Link to comment Share on other sites More sharing options...
khile Posted 29 minutes ago Share Posted 29 minutes ago so if i only have the 6600 in slot one the pc sees it no problem but as soon as i have the 4090 in any slot the 6600 is no longer seen i do have all the m.2 slots populated as well Link to comment Share on other sites More sharing options...
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