Legacy AMD

So what's this section for? Well a decent chunk of users have been wondering what the highest supported OS would be for their GPU if Mojave wasn't supported. While this isn't a definitive list it'll be more as a jumping off point as it's easier to say what architecture is supported instead of what OS is supported. The GPUs listed have theoretical support but keep in mind that they're not garunteed unless shipped in a Mac Pro. Also keep in mind that this list will likely change as I furthur deeper into old drivers to see what PCI IDs are even supported

Also to note: InjectATI may be required for these GPUs

Radeon HD 6000 Series(6xxx) Highest Supported OS: High Sierra

  • HD 6790

  • HD 6850

  • HD 6870

Radeon HD 5000 Series(5xxx) Highest Supported OS: High Sierra

  • HD 5770

  • HD 5850

  • HD 5870

Radeon HD 4000 Series(4xxx) Highest Supported OS: High Sierra

  • HD 4870

Radeon HD 3000 Series(3xxx) Highest Supported OS: High Sierra

Radeon HD 2000 Series(2xxx) Highest Supported OS: High Sierra

  • HD 2600 XT

Radeon X1000 Series(1xxx) Highest Supported OS: El Capitan

  • X1900 XT