no but i bet 3D labs might have something to say about that... they're working on it, but in some pretty screwed up numbers
http://www.3dlabs.com/product/index.htm
quote:
The Wildcat III 6210 offers a total of 416 MB of on-board memory-the first-ever AGP add-in board to offer this capacity.
*EDIT*
although something in the back of my memory is telling me that awhile back, ATI was threatening to create, produce, and release a video card that had 2 9700pro cores on it with double the ram.. but i have no link to verify, ill go digging.