I emailed Nvidia support asking specifically about the MacPro and EFI compatibility with the new TitanXp. This is the reply I got: Hello, Thank you for contacting NVIDIA Customer Care. This is Varun, assisting you with your query. I understand that you have a query regarding the compatibility of Titan Xp on Mac Pro. Thank you very much for your interest in our product line. The Titan Xp for Mac with with new Pascal drivers is coming this month. The details of the card for Mac should be available soon. We request you to wait till more details of this card is available. "card for mac" sure as heck makes me think it will be a new mac edition card!