To me, RAID 0 just means that you have 2 opportunities for a device to fail and lose data.
If you really want speed in a PC (you didn't mention where the drive was installed), get a 60GB SSD for your boot/windows/program drive and store everything else on a 2nd drive.
Whether you see any performance boost from RAID 0 depends highly upon what you are doing with the drive.
Best,
Roger.