Altera Stratix II FPGAs use a new and innovative logic structure called the adaptive logic module (ALM). With the Stratix II ALM architecture, the Quartus II software can improve the performance of a design by reducing the number of logic levels as well as the routing requirements. The innovative Stratix II logic structure, combined with advanced 90-nm technology from TSMC and the technology leadership of the Quartus II software, allows for a full speed grade performance advantage for Stratix II devices (-3 speed grade, fastest) versus Virtex-4 devices (-12 speed grade, fastest).