I'm curious to find out how's the performance of one of these HDs. Do you gain a substancial increase in track count (@24bit, 96k) using SATA? My current system houses 2 standard ATA133 drives & 1 Ultra SCSI HD on a Gigabyte P4 GA-845G MB. If there's a big difference in track count, then I'll find myself going through the annual upgrade thing once again. I do have one question. Is this technology based on using a controller card or would I have to upgrade the MB?