As far as the term "knows" goes, nobody knows more then you do. We have RUMORS to go on, but little else. Nvidia is playing this one pretty close to the hip. I expect a possible 32 pipe card maybe? maybe not. Certainly not 64 pipes as some have thought tho. Non-unified shaders will most likely be Nvidia's deal this round while R600 goes fully unified. Beyond those little hints, we just don't KNOW enough to say for sure yet.