The only way to do that is to buy a newer PowerBook. Use the search box to find the product of your choice. I set it to play all frames as fast as possible. Using a stopwatch, the playback is timed to the nearest tenth of a second. The ATTO disk benchmark was run using Express-Pro Tools 2.3.2 benchmark test with 8MB maximum file size and system disk cache disabled.
Sustained Rate is displayed in the charts.
Peak rates can be impressive but do not reflect typical drive performance.