[mrngld]

Is it supposed to be? I think the point with some of these Macs is you get the capability in something the size of a heatsink from Intel's Netburst architecture era, or a Macbook light enough to stick in a backpack and take with you to lunch.

If you're talking about chaining together multiple GPUs you're talking about a different game -- I suspect, anyway. Seems like a high-spec Mac would be good for development and testing. Arrays of GPUs, better aimed at production use.