For ordinary everyday use such as email and surfing the web a user will not notice any difference in performance. In fact when working with email or surfing the web an ssd does not have very much to do. The ssd will spend the vast majority of its time idle.
When it comes to email, speed is dependent on the user's reading and typing skills rather than being dependent on an ssd. When surfing the web, a user is at the mercy of the Internet service provider and all the connection points along the path to a web page.
If you felt nothing jumping from an HDD to an 830 it had something wrong with it.
Not necessarily. It depends on the overall pc configuration, software applications, and how they are used. Applications that are cpu or gpu intensive don't benefit as much from an ssd. Adobe Photoshop is a good example.
Good info from all. I am configuring it at the moment. The system is fast "as-delivered" Have not modes to SSD yet.
JohnnyLucky's point regarding SSD perfromance increaes being application dependent (ISP speed and user's skill) had occurred to me. But since this client is so reticent to part with $$$ on equipment (it is a charity) I have learned to get the best setup on a new system I can get in the initial purchase.