The company says Brian Krzanich is leaving because of "a violation of Intel's non-fraternisation policy".Read more
BBC Radio 4
On Monday, Bloomberg reported that Apple may start making its own chips in Mac computers within two years, replacing long-time partner Intel.
Jane Sydenham, investment director at Rathbones, tells the BBC's Today Programme that the move would make sense.
She says: "It would allow them to integrate all the software and apps across their product suite."
The news hit shares in Intel but she says that's an "over-reaction" pointing out that "chip-makers and processor manufacturers have had a really good couple of years".