AMD shows off two R600 boards at CES
 

We're talking about full-size, 12-inch boards with nice R600 XTX GPU and sixteen Samsung 32MB memory chips - that's right, whole Gigabutt of video memory connected to the GPU via that rumoured 512-bit memory interface. Or at least, there are some people in this industry who consider it as a rumour.

http://www.theinquirer.net/default.aspx?article=36757