D!J!X! wrote: snip, Actually if you have a 10000 rpm SATA drive and a 7200 rpm ide drive, I would use the 10000 rpm sata for the OS, because it is in fact faster both for data transfer because of sata and drive access because of its rpm. Phil replied: True. However in this instance, Greg has all SATA drives. You would still want to use the 10000RPM SATA drive as an audio drive. This is because the main read write opperations will be done on the audio drive. Not only that, the audio drive will require higher throughput/bandwith do to access and read write opperations etc. Regards , Phil Muir P J Muir Productions, Music And Audio Production Telephone: US (615) 713-2021 UK+44-1747-821-794 Mobile: UK +44-7968-136-246 E-mail: info@xxxxxxxxxxxx URL: www.philmuir.com/