Which graphics cards or integrated GPUs support metal?
In the WWDC 2015 video &quot;What's new in Metal, Part 1&quot;, Rav Dhiraj from the GPU software division states at 8'40&quot;

Metal is supported by all Macs introduced since 2012. (Nvidia, AMD and Intel)

This means :

Intel HD Graphics 4000, Iris 5000 &amp; 6000 family,
nVidia GT 600M, 700M family,
AMD R9 M family,