If you're compiling a large application and temporary data is being stored on secondary storage rather than being held in RAM you'll find that compiling should be faster as well. Of course it's better just to keep temp data in RAM if you've got enough of it. The remainder of your applications will receive no noticeable benefit apart from the time it takes to load the program or save a project if it's really big.
That said, you'll find that Windows is infinitely more snappy when using an SSD, and it won't slow down nearly as much as it does when using a HDD over time.