This is just baseband. It doesn't need an Atom, hell no. It could be like a 486 core manufactured on a ten year old process and it'd still be ridiculously overp

This is just baseband. It doesn't need an Atom, hell no. It could be like a 486 core manufactured on a ten year old process and it'd still be ridiculously overpowered for the task. More likely it's a P5 core because Intel have repeatedly used that core to produce things -- Bonnell and Larrabee. Anyways it probably runs at like 100 MHz or such and consumes a few tenth of a watt. Maybe an ARM consumes less but compared to the main CPU it's negligible anyways.