Metal Compatible Graphics Card for Mac Pro 2010

The installation of Mojave on your Mac Pro 2010 may raise concerns about potential performance degradation compared to High Sierra. Before proceeding, it's essential to ensure that the new graphics card you plan to install is compatible with Mojave and won't cause any unexpected issues.

In your case, you've already purchased a Metal-capable graphics card, which is excellent news! According to Apple Support, this card is listed as 'possibly' compatible. However, to confirm compatibility and avoid any potential issues, it's recommended to check the System Report under Graphics/Displays after installation.

If you're planning to upgrade from Snow Leopard, keep in mind that you'll need to first upgrade to High Sierra 10.13.6 before moving on to Mojave. It's also a good idea to maintain a copy of an older OS for troubleshooting purposes.

Regarding the compatibility of your current Nvidia GTX680 Mac Edition graphics card, it's essential to note that it's not Metal-capable, which means you won't be able to upgrade to Mojave directly. However, if you decide to purchase a PC card, it will still work fine with your Mac Pro 2010, although you won't get the boot screens.

To ensure a seamless transition to Mojave, consider purchasing a graphics card that is either a Mac edition or has been 'flashed' for Mac usage. This will provide you with the necessary boot efi and allow you to see the startup screens and Startup Manager.

Lastly, keep in mind that MacOS Catalina does not officially support your 2012 Mac Pro, so it's essential to stay within the compatible OS range (Mojave or older) when choosing a graphics card.

By following these guidelines and ensuring compatibility with Mojave, you'll be able to enjoy a smooth transition to this latest operating system while maintaining optimal performance.

Metal compatible graphics card for mac pro 2010