The feature sustains the precision of the drive throughout the environmental impacts and aging effects the drive will suffer during its lifetime. To reduce power consumption, this function automatically reduces the rotational speed of the spindle motor after it has been idle for two minutes. If the idle situation lasts for another three minutes, the spindle motor will be completely shut off, saving even more power. This feature allows the user to play an Audio CD without the use of software. Data transfer rate refers to the amount of data that a CD-ROM drive can send to a PC in a certain period of time.
Access time is the time required for a CD-ROM drive to find the desired data on a disc.
A shorter access time indicates better performance. Stroke refers to the distance from the innermost track to the outer most track of a CD-ROM disk. A CD-ROM's speed is measured in terms of its data transfer rate. The data transfer rate for a CD-ROM drive is measured in terms of bytes per second and measures the speed at which the drive can transmit data to the system's memory and CPU for processing. The higher the data transfer rate and the shorter the access time, the better the performance of a drive.