Im thinking about installing a third sata drive in my computer (a solid state maybe about 100gb). I currently have two in there now. The Solid state would be for the OS only, the 250gb (that I currently have as the main) for all programs to be installed on it), then the 400gb (that I also currently have installed) to be used just for storage (like all my music and movies and what nots). The question is, what would my possible performance gain be and can you install programs on an internal hdd with the OS on that drive?