However, when booting my MacPro 2010 with 5.1 firmware, I see nothing until it displays the login screen. Shame that ATI 5770 or 6750 ($170) PC cards can't be used, even if only half the VRAM could be seen.Has anyone figured out how to flash a SAPPHIRE Radeon PULSE RX 580 8GB GDDR5 video card so that a MacPro 5.1 will display the Apple logo and startup progress bar and allow you to run options such as internet recovery or choose the startup disk boot options? I have a 2010 MacPro 5.1 and installed a SAPPHIRE Radeon PULSE RX 580 8GB GDDR5 video card which Apple recommends. There were some PC cards that were to work in Mac Pro, but limited. $200 for flashed 8800GTs on ebay though dried up, too many problems it seems with solder joints and quality as well as over 3 yrs since manufactured.Įven the ATI 1900XT used in some PCI Express G5s was/is different than the ATI X1900 used in early Mac Pro ($449, $250 extra when BTO) even though 19s for PC were out, were half the price, they could not be cross-flashed. Which is why you can't even get basic video out except with branded cards that have $100+ premium.īecause Apple used an 8800GT, there were some flashed PC cards, and as long as it was based on the same reference (G92?) and had a large enough ROM, there were some. PCs use BIOS, you won't find EFI or now UEFI, and Apple takes a standard but proprietary implementation.
Open Firmware was the heart of Power architecture for 1997? until the switch to Intel architecture that was begun even earlier but under wraps. We see a lot of people here say their "Mac Pro G5" or G5 Mac Pro" and "well they both LOOK the same on the outside!"
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