GPU that Supports Mojave and El Capitan?

[Ocnetgeek]

Does such a GPU Exist? I want to be able to run Mojave on my Primary Disk but would like to be able to switch to a different disk with El Capitan loaded without having to switch to a different GPU.

 

[tsialex]

Does such a GPU Exist? I want to be able to run Mojave on my Primary Disk but would like to be able to switch to a different disk with El Capitan loaded without having to switch to a different GPU.

Yes, they exist:

NVIDIA GTX 680/780
AMD HD 7950/7970, R9-280x