I’ve never heard anyone mention the 133 mb/sec disk yet. I’ve always tried to keep my disk in the upper tier of my list of disks I’d like to have, as I have a hard time justifying just about anything even smaller in comparison to the larger 300 mb/sec disks that are now ubiquitous.
It seems that, as the technology evolved, the size of the disks shrunk, but the speed remained the same. Because the fastest possible speed for a disk is 133 mb/sec, it is possible to read data from a slower disk with 133 mb/sec. The latest generation of CD-ROMs have the capability to read data at 128 mb/sec, but even that is a long time compared to the 133 mb/sec speed.