A while back, there were rumors that Apple was designing a MacBook Air powered by the same A-series chip that is found in the iPad and iPhone. But, a recent research note from a Citigroup analyst suggests that Apple’s plans to create this ARM powered MacBook have been scrapped since Tim Cook believes that the iPad fills the need for a low-powered, high-efficiency computer.
Intel is poised to release their next generation Ivy Bridge CPU, which will require even less power than their current line-up, so the advantages of moving to ARM are negligible. Transitioning to ARM would also require a deep OS X overhaul, so it’s not a change that would be taken lightly. It’s more likely that Apple was considering an iOS-powered device in a MacBook body, but decided that such a device would be too niche.