This is actually exactly what is going on in this example. The CPU is able to execute instructions from the various searches in whatever order the data arrives.

This is actually exactly what is going on in this example. The CPU is able to execute instructions from the various searches in whatever order the data arrives. You can learn more about the process here : https://en.wikipedia.org/wiki/Out-of-order_execution https://en.wikipedia.org/wiki/Out-of-order_execution Because the process does not create full "threads," the CPU doesn't need to spend time doing things like saving registers or figuring out what to execute next.