Veeery simplified explanation for a person who finished CPU and GPU architecture courses at university. Also there are some mistakes, like ALU is literally a hardware calculator and nothing more, it's just a module of the whole CPU, the main instructions are executed on the core itself. Also you said that GPUs are needed if you want to do single task faster. This is contextually wrong as CPU will execute single instruction several times quicker than GPU, but GPU is like a CPU, but with not 32 threads, but with a couple thousand threads, so it handles really good tasks that can be mass-paralleled. So CPU is for "I NEED IT DONE IN SEVERAL NANOSECONDS" and GPU is for "I have a damn tonn of similar work, handle it please"
Veeery simplified explanation for a person who finished CPU and GPU architecture courses at university. Also there are some mistakes, like ALU is literally a hardware calculator and nothing more, it's just a module of the whole CPU, the main instructions are executed on the core itself. Also you said that GPUs are needed if you want to do single task faster. This is contextually wrong as CPU will execute single instruction several times quicker than GPU, but GPU is like a CPU, but with not 32 threads, but with a couple thousand threads, so it handles really good tasks that can be mass-paralleled. So CPU is for "I NEED IT DONE IN SEVERAL NANOSECONDS" and GPU is for "I have a damn tonn of similar work, handle it please"