It depends what compute tasks you are using your mobile for If the heaviest tasks are playing HD video, using webgl or playing 3D games then the GPU matters mo

It depends what compute tasks you are using your mobile for If the heaviest tasks are playing HD video, using webgl or playing 3D games then the GPU matters most. If you are using your cell phone for massively parralel computation fluid dynamic simulation of nuclear weapons - then that's still the GPU. If you are using it for I/O bound limited multi-tasking like database access or payroll processing then a 4core CPU is best.