8. HP vs. IBM
rivalries hp ibm

Hewlett-Packards' victory over IBM has not been particularly sweet. In 2006 it surpassed IBM in revenues, a lead it has maintained. But revenues are not the only measure of success.

Since the earliest days of IT, they have been polar opposites: HP seeded the engineering-heavy ethos of contemporary Silicon Valley. IBM's iconic Thomas Watson was more salesman than scientist.

HP (HPQ, Fortune 500) has had more CEOs in a decade than IBM (IBM, Fortune 500) has had since the end of the Watson family reign. IBM draws from five-year plans, while HP is fond of aggressive moves.

Winner: IBM

--Jessi Hempel


- Last updated March 21 2013 05:44 PM ET
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