Oooooh, I was all ready to walk away and all, but then you had to say that...
First thing's first. I've not been 'anti-Mac trolling', as you put it. I have, in my time, had an iPad, an iPhone and a MacBook Pro in my possession. I still have an iPhone (4S) as I think they're the best phones on the market, when you look at hardware, stability and OS. Personally, I wouldn't go Mac in the future for a PC as I don't think they have the same bang for buck, especially as Windows is now very robust. Anyways...IMHO, and all that.
Yes, your first post did give a simple, factual answer...but
then you went on to make some claims that you still haven't substantiated, despite being asked to. You were quite happy to beat the Mac drum up to that point.
Oh, and I'm not being a 'zealot', as you put it, I'm a member of a technical community who wants to know a bit more about what you claim is possible...ie, running a MP with a 6990. We're still waiting for the 'simple, factual answer' to the question 'Please show us evidence that that is possible' (acceptable evidence in the form of a URL showing how to successfully install and operate said GPU will graciously be received).