It's not the CPU having issues, but rather if your machine has 48-bit LBA support. Your Sawtooth may have issues with drives over 128GB, but not if put in a proper firewire case. <http://docs.info.apple.com/article.html?artnum=86178> On May 28, 2005, at 6:31 AM, KS wrote: > Thanks for the helpful replies about Seagate. I need to correct a > typing mistake I made. It's a 300GB drive (not 300MB). Also, I've > read that a drive might be too big for your CPU to handle. I have > a Sawtooth G4 upgraded to dual 500 with 1.2G memory. Will I be > able to get the maximum "speed" & performance using a drive this > large? I'll be using it to edit video with iMovie. >