Ok maybe not must, but ones that see huge gains on an ssd. I finally bit the bullet and bought a OCZ Vertex 4 VTX4-25SAT3-128G 2.5" 128GB SATA III ... So I figured Windows 8 would be a given. I figure most games will go on my 2TB worth of standard HD's. Any programs that should go on the ssd? Maybe the web browser.