From: Gareth Henderson <gareth.enmasse@...> > Remember that the difference between ATA100 and ATA66 is their > theoretical maximum transfer rate. If the drive won't transfer > more than 66MBpersec anyway then it makes no difference which > you use. Do you know of any 7200rpm EIDE drives that transfer > better than 66 MB per sec? No, neither do Apple! Well, that's true for *sustained* transfer rates (IBM 120GXP drives have 44mb/s sustained rate, IBM 60GXP drives get 40mb/s) - which are definitely the most important thing with Logic -- but thanks to the hard drive's cache, bursts of up to 100 mb/s can be reached with ATA100. Not a *huge* difference compared to ATA66, but when accessing a lot of different small files (e.g. .exs instruments, presets, etc) thanks to the hard drive cache faster speeds can be reached - just not for very long. I totally agree ATA100 is not a huge benefit, and especially when recording entire tracks (even just one track, let alone 64+ at once) it doesn't help at all. I just wanted to point out ATA100 drives can go over 66 mb/s in small bursts, which *sometimes* might speed things up very slightly.