The pipeline issue is continuing to rage between ATI and nVidia and just as we were getting our fingers ready to count the number of them which the GeForce 6800 Ultra (NV40) will sport and used to the idea that the speed Crown will change hands, ATI are confusing the battle again. The latest twist in the pipeline saga comes from ATI's camp and claims that ATI are about to announce a product carrying a 16x pipeline architecture. It is not clear if this refers to ATI's Radeon X800 (R420) chip or …