NVIDIA has replaced the packaging on its original design to flip chip on the Ultra for its improved signal quality at higher clock frequencies. This allows NVidia to hit higher clock speeds than they were able to achieve previously, core clock frequency has been increased from 350MHz to 400MHz on the revised Ultra core. This is the same clock speed as ATI's RADEON 9600 Pro. NVidia has also bumped the memory clock up to 800MHz which exceeds the 9600 Pro by 100MHz.