Metal – A new to macOS graphics framework that is required to install and run macOS Mojave and newer. This can be an Apple GPU that came with your Mac Pro, or an aftermarket GPU that had Mac firmware flashed to it. Mac Flashed GPU – A graphics card that allows you to see the startup/boot screen on a Mac. GPU – Short for Graphics Processing Unit, also known as the Graphics Card A feature introduced in Mac OS X 10.11 El Capitan that protects certain system components such as the firmware from being edited or tampered withĬPU – Short for Central Processing Unit, also known as the Processor Terminology (simplified):Ĥ,1 Mac Pro – 4,1 refers to the Model Identifier of the 2009 Mac Pro, MacPro4,1ĥ,1 Mac Pro – 5,1 refers to the Model Identifier of the 20 Mac Pro, MacPro5,1įirmware – Code on a chip that gives the machine the basics of how it needs to operate

So you’ll have everything you need in one place. Therefore I’ve decided to write a clear, to the point, 2021 version with links to pieces of this puzzle still available from their original source, and pieces no longer available that are now hosted on this website. This topic has been covered in the past but all those guides appear outdated, have broken links, needlessly complicated processes, or a combination of all those. If you are one of those people or know one of those people that have a 2009 4,1 Mac Pro and want to squeeze another decade of life out of it, this page is for you!

I took this knowledge for granted, forgetting there’s a whole world of people out there that have no idea this knowledge exists. They don’t see this kind of information on a daily basis like this geek. But there are many Mac Pro users that are not aware of those communities or of the upgrade potential and possibilities for their Macs. Hanging out in the various Facebook groups and other communities, I rarely run into anyone anymore that has a 2009 4,1 Mac Pro that still runs the stock firmware.

Mac pro 5.1 upgrades