After a year of working on the ICs, TI announced they had failed to be able to build the 64-pin designs. The more complex internal wiring was causing crosstalk in the circuitry, and they asked for another year to fix the problems. Instead, the ILLIAC team chose to redesign the machine based on available 16-pin ICs. This required the system to run slower, using a 16 MHz clock instead of the original 25 MHz. The change from 64-pin to 16-pin cost the project about two years, and millions of dollars. TI was able to get the 64-pin design working after just over another year, and began offering them on the market before ILLIAC was complete.