I didn't realize the PC version of the 285 was going for so much. At least for PC users though, they should be seeing some remarkable performance from it. We can too if we were to run a game under Windows, as I recall. But not from the Mac OS side of things.
A thing that bothers me reading about older, similarly much hyped video cards is the promises they offered but apparently were just given up on not far beyond their launch. I've had a sinking feeling for some time that the 285 has hit it's stride and it will be abandoned also soon.
Not that Apple couldn't make better drivers for it and eek out better performance, but, knowing Apple, I just don't believe they will.
To answer the posters question, and I haven't yet, I haven't seen much price variation for the 4870 and 285's for Mac. One may get lucky, I just haven't seen it though.
One thing I would definitely do if I got my Mac with a low powered card (and but for the Discussions, I almost did.), is to consider what Sammy refers to as "Hacks", which I believe I would term "flashed" cards.
I used to do a lot of business with these guys (almost everything they have is flashed) and was never disappointed. They are some really good people.
Now I like to stay away from flashed, and, if I can, get Made-4-Mac cards. The new 09s are lucky that way to have two such good, but expensive, cards available to them.
But if hadn't spent a lot on the old card and was just beginning my journey to hunt out a new and better one, I would really keep "hacks" or flashed" cards in mind. There are risks and potential issues but I have never run across them in the past as far as I know. They might just be worth a shot.
http://stores.ebay.com/local338onlinestore
Message was edited by: Samsara