You may as well have 2 distinct chips for different applications.
That's kind of the point:)
The A7 (little) and A15 (big) are very different processors but they share the exact same ISA (unlike TI's 'version'). ARM's big/little is different from Nvida's approach in the Tegra3/4.
The idea is that normally only the A7's run and when apps change (work load increases) then the A15's light up and the A7's shutdown. This moving between A7 A15 is very quick and can be transparent to the OS.
From a tech perspective, it's a very interesting solution to the 'always on' device. Will it work in practice? We'll have to wait and see.
We'll have to wait and see.
Do we? 12 months ago ....looks like TI's chip has all the bells and whistles
Fabbed in UMC's 28LP process, it utilizes two ARM Cortex A15 cores, and two low-power Cortex-M4 processors (taking the "big-little" approach discussed at the ARM Techcon last year). It has 2 MB cache, and the graphics side is covered by dual POWERVRÃ¢Â¢ SGX544-MPx graphics accelerators.