[gowld]

> so are nvidia graphics.

Is there a workaround (replaceable card?), or does running Mac OS mean you can't use discrete graphics (which is a major degradation)?

[missjellyfish]

You can use Radeon cards, some are supported and when they are they run decently. But anything other than a GTX760 is not going to work, and I can assure you that the drivers Apple ships for this card are absymal.