The Inquirer posted some details about NVIDIA's upcoming GeForce 7600 GT:
EVER SINCE Nvidia announced that G72 and G73 are going to be pin-to-pin compatible, there were real no surprises. 128-bit memory interface was expected from day one and you could guess the number of ROP's and Pixel Shader units will be surprisingly similar to ATI own RV530, known as X1600. However, Nvidia firmly stands that you need to feed the pipe with new textures and output more pixels, so X1600 is in for a one heck of a ride.
The PCBs of 7300GS more or less look like identical twins to the 6200 and cheaper 6600s - which are similar to 6200 as X1600 is to X1300. Since a switch to 90 nanometer production posed a substantial challenge to Nvidia, the company decided to play it safe. You see, production lines of the well-known TSMC are 130nm in FSG and Low-K, 110nm FSG and 90nm Low-K.