Broadway is being produced by IBM at their 300 mm semiconductor development and manufacturing facility in East Fishkill, New York. The bond, assembly, and test operation for the Broadway module is performed at the IBM facility in Bromont, Quebec. Very few official details have been released to the public by Nintendo or IBM. Unofficial reports claim it is derived from the 486 MHzGekko architecture used in the GameCube and runs 50% faster at 729 MHz.
The PowerPC 750CL, released in 2006, is a stock CPU offered by IBM and virtually identical to Broadway. The only difference seem to be that the 750CL comes in variants, ranging from 400 MHz up to 1000 MHz.