The SSD will be just as fast. But it won't help with the speed of the OS (or general usage). Many programs can't install to it. Even those which do. Often install files to the OS drive. Even those which install to the SSD completely still make many calls to the OS. So, most won't respond any faster.
As far as raw Read/Write speed, IOPS, &c. That remains the same. It's just you won't get much benefit from it.