Rambus XDR2 GPU slide suggesting a 256bit bus with 256 GB's of bandwidth.

[Brimstone]

On page 21 of the pdf you can see the diagram.


http://www.rambus.com/assets/documents/events/memconaustin2006echevarriapresentation.pdf

 

[cho]

it seems the die size cost of XDR is very high for Cell .

 

[RejZoR]

Anything from Rambus is expensive like hell.