got 2 ssds running raid just the 60 gig ocz vertex ones, surpost to hit about 1000 mbs a sec im getting about 800 mbs a sec not sure if its limit of raid driver or what,or just if i anit set it up right, but after a bit more room for os, for putting games on would i see much improvment runing 3 or 4 ssds if not could buy say a terabyte drive for launch games of but defeats point of having the ssds, well happy with how fast pc is with 2 ssds just bit short on space for os.
If you need more space for games and want them to load fast then there is no reason to not buy another 1 or 2.