BlkackMagic Design have released an external GPU to suit ANY Thunderbolt 3-equipped Mac. That would include my 4k iMac & non-Touchbar 13-in MacBook Pro. Available exclusively from Apple. Here’s what it packs under its hood:
Compatible with Mac with Thunderbolt 3 ports;
Radeon Pro 580 graphics processor with 8GB of GDDR5 memory;
Two Thunderbolt 3 ports;
Four USB 3 ports;
One HDMI 2.0 port;
85W power delivery.
Under $1,200 Oz dollars.