probably right, but the transfer speeds are much faster with 4 drives on RAID 0. Also, I originally built my system two years ago, and have since replaced all but the keyboard, mouse, case, and... Hard drives
There might have possibly been 1TB drives available at that time, but if so were very pricey. 320s were the most bang for the buck at the time. Been serving me well or they would have gone the way of the EVGA motherboard that I quickly came to loathe which now sits collecting dust in the closet lol.