Can Clara be run on arbitrary hardware?

I am interested in setting up the Clara Federated Learning client/server model.
On the getting started page (here) it lists having an NVIDIA GPU as a prerequisite.

However, on the FL client page (where the bulk of the training actually occurs) (here) there is no mention of the need for NVIDIA GPUs.

I’m wondering if the entire FL server/client system can be run on arbitrary hardware.