How do you know whether to render with CPU or GPU. Can you do both?

I’m new to Blender, but I saw the option before rendering to use the CPU or GPU. Like playing a video game it doesn’t use both the CPU and GPU to render and animate?

So this means that you can get a computer and concentrate your money on a good CPU or GPU? You don’t need good versions of both? I don’t understand…

Can you have Blender use both the CPU and GPU when you render an animation?

you can. open blender twice and render one part on each. keep in mind to use 7 cores on your CPU rendering. else the GPU will take forever. i think its cause the CPU has to send the data to the GPU or something like that…