TechCrunch reports Apple has 1,000 engineers working on low-power chips for the "post-PC era":
The number was startling when I first heard it. I knew that Apple started building its own chip design team in 2009, but figured it had to be a few hundred people at most, not 5 percent of Apple’s non-retail workforce. (Apple employs more than 50,000 people worldwide, 30,000 of them in its retail stores). Apple started designing its own chips because Intel and AMD were still stuck in the PC era. Apple needs chips that are powerful enough, but also very low power.