> As I wrote, it was a general statement as a response to what seemed like a general statement, not a Mac specific one.
> I run a Mac Mini so I wouldn't know where to plug *any* card

I was addressing the thread as a whole not you specifically. Now gimmie your mac mini.

>I don't think there's a releation between the number of memory signal lines and the amount of accessible memory.

Much of the time if you flash a card with a 64-bit memory interface with a bios from a card with a 128-bit memory interface you will end up with half of the labelled memory. This holds true with all Nvidia 5200/5500 cards and Radeon 9200/9250 cards I've tried.