Does any one have any real world experience with ATA-66 vs 100? I would think the limitation would be how fast can the drive move data rather than the bus (if you only had one drive). A good 7200RPM drive can move data from the physical disk at about 30-40MB/s? You'd probably see an improvement if your drive had a big cache, but even so, for a real person sitting in front of it would it make any appreciable difference? Pondering Charlie "Thomas T. Veldhouse" wrote: > Well, if ATA-66 compared with ATA-33 is any indication - that should be a > wonderful improvement. However, you will notice very little with RDRAM and > it is a hell of a lot more expensive to upgrade RDRAM memory than SDRAM > memory. To be honest, if you are looking to make a new high end purchase > soon you should wait for the DDR boards to come out.