Clamshell vs open: Performance and/or heat difference?

[Flux386]

Hi, i am wondering if some of you who have their M1 MBP or MBA hooked up to a monitor noticed any difference between using it open vs in clamshell mode. I would suspect that the machine gets a bit warmer when having to operate two screens but on the other hand, heat should radiate better in an open position. Does that even make a noticeable difference? Please also let me know if you've experienced a difference in performance.
Thanks in advance! 🙏

 

[barbu]

Not sure about the M1 thermals but any notebook should dissipate heat better when open.

 

[chabig]

Does that even make a noticeable difference? Please also let me know if you've experienced a difference in performance.

No difference in heat or performance.

 

[mikeschr]

M1 Air. No difference in performance. The machine rarely gets warm to begin with, and when it does, it's mainly the bottom.