http://www.xbitlabs.com/news/memory/display/20050707202113.htmlXDR2 memory interface is targeting apps that have tremendous memory bandwidth requirements, such as 3D graphics, advanced video imaging, and network routing and switching applications. XDR2 will work at 8GHz and above, which, in case of 16-bit interface provides 16GB/s bandwidth. By contrast, similar GDDR3 memory chip at 1.20GHz can pump up to 2.40GB of data per second.
Moore certainly would be proud of his law if he could see this. I can't see these being used in desktop motherboards or even servers for that matter as they'd cost wayyyy too much, however I could see a video card company switching from DDR to XDR and getting a massive performance increase. If 16 bit interface runs at 16GB/s shove it in a 256bit card and you've got 256GB/sec memory bandwidth.