Guest aparolin Posted August 11, 2022 Posted August 11, 2022 Hi there! Please help me about that weird think! i have a MAC pro 4.1 flashed 5.1 (firmware 144.0.0. , with 48 gb ram and a matched pair of xeon 5690, Mojave OS, no open core. I buy a Radeon Vapor-X HD7970 GHZ EDITION (not flashed so I can't see the boot screen) and it have a very weird perfomance. let me explain you. When I start my mac the screen is black while al my periferal works fine. So if I plug and unplug the input a few time ( whether it is the HDMI, or the DVId or the... Read more Source: MacRumors
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