Crossfire Bridge For 80nm ATI Cards CONFIRMED !!!

[cadaveca]

I always wondered about this area of the cards:


To me, it looks like it could use the VIVO part of the RageTheater chip for cross-communication...but the missing BGA-mount component there I always thought might possibly link up the ram from either card, thanks to the ring-bus tech.

The 512 bit Ringbus does not only interact with main memory, but also is used to shuffle the data around the chip to where it is needed. It is a general purpose, bi-directional pathway that offers a lot of internal bandwidth for the different functional units. It is also programmable so that it can change its behavior to match what the application is requesting.

R300+ has had inter-gpu communications possible, and with nVidia's solution only needing a single link, what's that second link really needed for?