People frequently ask on steam, the subreddit, and the forums this question. I want to help people determine the answer for this. But I'm not overly knowledgable of computer hardware these days. Not overly sure what this resource would look like. But it could be as simple as, "If your tech specs are ____ or better, you can run PA just fine." Help me out? What would the tech specs be to say "If your tech specs are ____ or better, you can run PA just fine."
You can check my FAQ there: http://steamcommunity.com/app/233250/discussions/4/558749824471305841/ Though I don't have any exact details about Mac version performance so such addition would be useful.
I will say one thing, no offense to SXX, some of his wording and English in the guides need to be cleaned up as well.
You could just link them to www.systemrequirementslab.com It's not the most accurate thing in the world but it's not awful at what it does.