Does CPU mining slow GPU?

The CPU’s wide range of responsibilities benefit from its equally wide skill set. But when it comes to the highly parallelized computations required for mining, the GPU shines. A CPU can’t output the same raw hash power that a GPU produces, and you may earn more slowly as a result .

There are always bottlenecks . In this case if the CPU cannot provide the GPU with enough work yes you can have a bottleneck. When mining all that will happen is that your system will be limited in the number hashes it can generate by the CPU instead of the GPUs.

Can you mine with CPU and GPU at the same time? Yes, this can be done . Since there are coins that can be mined with a CPU, you can use all the power at your disposal to mine coins if you have a rig with a strong cooling system to take care of the heat of both GPU and CPU.12 Eyl 2021