FFXIV Ravana Trial from FFXIV Heavensward on iMac 5k using native Mac client.
Specs:
AMD Radeon M295X GPU
4.0Ghz i7 CPU
512 SSD
8GB RAM
Setting:
2560x1440 (aka 2.5K, and demo'd full 5K at the end)
Next will be the MacBook Pro, 2015 /w AMD M370X GPU