YK103 Posted April 26, 2023 Share Posted April 26, 2023 Hi, I've got an issue where OpenCore doesn't work correctly with older GPUs like the GT 9600 and HD 4870 because it displays a resolution the monitor can't understand. Â I've had luck with using different monitors with the GT 9600, but with the HD 4870 nothing works. Does anyone have any clue why OpenCore does this? Thanks! System specs: Radeon HD 4870 Core 2 Quad Q9300 Biostar G41D3+ 4GB DDR3 Corsair V350 PSU Quote Link to comment Share on other sites More sharing options...