CM5 is just shorthand for Compute Module 5. It's a raspberry pi 5 in a different form factor. Until it's released we can't know all the exact differences withou

CM5 is just shorthand for Compute Module 5. It's a raspberry pi 5 in a different form factor. Until it's released we can't know all the exact differences without apparently signing up for an NDA'd spec sheet. But see https://www.makeuseof.com/raspberry-pi-4-vs-raspberry-pi-compute-module-4-key-differences/ https://www.makeuseof.com/raspberry-pi-4-vs-raspberry-pi-com... for a breakdown of how the PI 4 and CM 4 differed.