It looks like system_stm32f4xx.c defines the system clock speed and is set to 180 MHz. I just saw a couple of references inside the IAR environment that indicated 72 MHz, which I believe is the F3 series max clock speed.
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.