ATI caught us surprised announcing the FireGL V7600 based on R600PRO that we mentioned today. The card works at 600 MHz and supports Shader model 4.0.
It turns out that this card has the whole 320 Shader units and as we suggested 256 bit memory interface. It uses DDR4 with total bandwidth of 51.20 GB/s.
This is just one of the cards but there will be at least one more iteration of R600PRO with a bit less Shaders and ROPs but it will probably be launched as Radeon rather than FireGL.