Im trying to decide what would give me the best performance out of what I have available. I just purchased Seagate Barracuda 7200.10 ST3320620AS (Perpendicular Recording Technology) 320GB 7200 RPM 16MB Cache SATA 3.0Gb/s Hard Drive I also have two older ones. Seagate Barracuda 7200.7 ST380817AS 80GB 7200 RPM Serial ATA150 Hard Drive The motherboard I use will only support SATA 1. Should I use a RAID 0 setup with the two older ones or just install the OS on this new hard drive which I hear is quite fast.