CD-Bench - Version 2.1 Small, fast and reliable benchmark for CD-ROM drives. High resolution timing (0.1 ms), 99% of asm code, 100% freeware. Many people think that the data transfer rate of CD-ROM drives is constant from the beginning to the end of the disc, but this is true only for old-and-slow models. CD-Bench is the only benchmark that reads the disc in six different points and displays six results, so you can see if and how the speed varies.