I cannot tell you about cost advantage, but I can tell you about risks related to building your own system from ground up. One of the advantages of Atom-based

I cannot tell you about cost advantage, but I can tell you about risks related to building your own system from ground up. One of the advantages of Atom-based systems is that you can use Atom today and A15 is due to next year. And ARM will not be available in silicon, only as a licensable IP core. If you have some domain-specific IP to get an advantage for your system-on-chip, it would be wise to license A15 as a CPU. Otherwise, you better go with ready-to-use chips, be they Atom or another ARM. By deciding that you need to create your own system-on-chip and your own PCB, you introduce substantial risks into your product. Even PCB alone involves quite burdensome process of testing which can cost you time to market.