I want to update my harddrive to a faster 10,000 or 15,000RPM.
From what I can tell most or all of these HDDs are SCSI. I know nothing about them. Is my current motherboard compatible? What pin connecters should I have? I saw these interfaces: SATA 3.0 Gb/s, Ultra 320 SCSI, Serial ATA150 and Serial Attached SCSI (SAS). What do those interfaces mean? I know I currently have a SATA 3.0. This is the link to the motherboard i have: http://usa.asus.com/products.aspx?l1=3&l2=15&l3=148&l4=0&model=375&modelmenu=2

COMPUTER info:
MB: ASUS A8N_SLI Deluxe
OP SYS: Windows XP Home SP2 (UPGRADING to Professional soon)
Current HD: WD2500KS 7200rpm
Western Digital Raptor hdds are 10000 RPM SATA drives.
Honestly I would go for a couple of those instead of bothering with SCSI.

I you want SCSI you will NEED to buy a add-on SCSI controller card because your mobo doesn't have any SCSI controllers.SCSI are mainly for commercial USE in servers. if you really want a faster RPM harddrive, i would go for a raptor.What are your specific needs and why do you want them to spin so fast ? ?
You may be pissin away money you don't need to