As PCWorld's senior editor, Mark focuses on Microsoft news and chip technology, among other beats. He has formerly written for PCMag, BYTE, Slashdot, eWEEK, and ReadWrite.
Apple didn't need to put a 64-bit chip in the iPhone 5s. So why did it? Perhaps to pave the way for more powerful iPhones, iPads, and even Macs down the road.
