multithreading - Multiple threads and performance on a single CPU

Question

Is here any performance benefit to using multiple threads on a computer with a single CPU that does not having hyperthreading?

Answer 1

In terms of speed of computation, No. In fact things will slow down due to the overhead of managing the threads.

In terms of responsiveness, yes. You can for example have one thread wait on an IO operation and have another run a GUI at the same time.