Diane Bryant

The former CIO now runs Intel’s data-center division, which raked in more than $14 billion in 2014 and—unlike the mobile group—grew 18% last year. Bryant, who has said she never even intended to go to college, studied engineering and has been with the chipmaker since 1985. With president Renée James leaving, she will soon be the highest-ranking woman at Intel.

For more on newcomers and returns to the list, read “Who's on? Who's off? Fortune's list of the Most Powerful Women has plenty of changes.”