ARM chose Wednesday to reveal a new mobile processor design that could make possible smartphones under $100 that still have real performance. Cortex-A7 MPCore borrows some of the optimizations from the A15 and rolls them into a budget design. Although it's a fifth the size of the older Cortex-A8 at 0.5mm square and five times more power efficient, speed is "significantly greater" and closer to that of a higher-end $500 phone, ARM argued.
