Here we have our first teardown of the Canon EOS R5, and it will give you some idea in how Canon has chosen to control heat. There are a few design choices that I find interesting.
- The thermal pads on the CPU don't cover the full CPU
- Aluminum was used instead of copper, though there is added cost and complexity of working with copper.
- There is definitely no venting for heat to escape
- Is there an issue with the CFExpress slot being so close to the processor?
As pointed out by EOSHD, why does not of this matter when recording externally? I and others think it's probably some kind of software limit.