Hello, I was recently looking in to purchasing an older 2009 Mac Pro for simple coding and photoshop, and possibly blender. However, the gpus they come with will not meet my requirements that I know of. What other gpus are supported by these macs? Ive read the rx 580 and rx 560 are good options for an upgrade, but it seems a little confusing. Will I have to install the drivers for the 560/580 before installing it, or is it plug n play?