On Jan 27, 2006, at 6:17 AM, Richard wrote: > I have a upgraded sawtooth G4 450 > to a G4 1.5Ghz OWC extreme and 2.0GB of RAM > > Now, I need to add the fastest hard drive controller, > and adaptec 29160 is not it. with a 15K RPM drive. > > So, what is? It's not clear from your message whether or not you already have a 15,000 RPM SCSI drive or not, but if not and you really are after the fastest drive you can get, it's actually not a SCSI drive. From Storage Review's Leader Board section (http:// www.storagereview.com): Desktop / Single-User Western Digital Raptor WD1500 Lowest Price: $282.99 "WD's newest Raptor delivers the best single-user performance one can buy regardless of interface and spindle speed. For about the same price, Hitachi's Deskstar 7K500 sacrifices some speed but offers over three times the Raptor's capacity while remaining a peppy performer in its own right." You'll need an SATA controller. Make sure the one you get supports the latest SATA standards. Phil