unreal9400 :
That CPU will never get above 60 FPS on CS:GO especially during heavy fight scenes.
With its 128 GCN cores you really need to lower down the settings all to minimum to get a decent gameplay.
The CPU is actually a SOC(System on Chip) which means the CPU is soldered to the motherboard.
Upgrading is therefore not possible.
Even if you do manage to upgrade a notebook CPU its performance is nowhere near a desktop CPU even the GPU is weak in comparison.
Get a desktop if you really want to game and leave the laptop for office use and simple task.
There are some amazing laptops that are much better than desktop computers, of course they will be costly but still you can play all games on max settings so don't discredit laptops so much
There are people who like gaming but are constantly moving from place to place (students especially)
so they can't have desktop pc