I made my VM think it has a CPU fan | mindless-area
https://wbenny.github.io/2025/06/29/i-made-my-vm-think-it-has-a-cpu-fan.html
Some malware samples are known to do various checks to determine if they are running in a virtual machine. One of the common checks is to look for the presence of certain hardware components that are typically not emulated in virtualized environments. One such component is the CPU fan.
Hivelogic - System-On-A-Chip: Why Apple’s new CPU Is So Important
http://hivelogic.com/articles/system-on-a-chip-why-apples-new-cpu-is-so-important
"Apple’s subtle mention that the iPad features a CPU of their own making, the A4, was actually the most exciting part of the whole announcement. It’s pretty important."
Homebrewed CPU Is a Beautiful Mess of Wires | Gadget Lab | Wired.com
http://www.wired.com/gadgetlab/2009/05/homebrewed-cpu