The CMD640 IDE chipset used was utter trash and most of the bottleneck. It wasn't until the G4 series that apple stopped slapping it in everything. A system wit

The CMD640 IDE chipset used was utter trash and most of the bottleneck. It wasn't until the G4 series that apple stopped slapping it in everything. A system with the CMD640 only used for cdrom, and a bootable SCSI PCI card performed a lot better.