Hi Ed. Actually, I was trying to get Splaskin's attention, since he's the one who made the claim about speed. (I've got a 1.67GHz PowerBook G4.) I'm not sure I would notice a difference anyway. The PowerBook currently is connected to my system via the 1/8" headphone jack, and I can hear only a slight difference between Apple Lossless and the original CD --and that's when I know which source I'm auditioning. If I were to do a blind test, I doubt I could tell which one was playing. (I guess I'm not quite audiophile material, yet.)