As faster drives were released, the write speeds and read speeds for optical discs were multiplied by manufacturers, So what is the speed of DVD CD Blu-ray disc drive
Original CD-ROM drives could read data at 150 kibibytes (150 × 210 bytes) per second.In order to market increasing drive speeds, manufacturers used the symbol nX, whereby n is the multiple of the original speed. For example, writing to a CD at 8X will be twice as fast as writing onto a disc at 4X.
DVD Blu-ray Disc drive speed difference in those？
Modern compact discs support a writing speed of 52X and higher, with some modern DVDs supporting speeds of up to 24X.It is important to note that the speed of writing a DVD at 1X (1,385,000 bytes per second). However, the actual speeds depend on the type of data being written to the disc.
For Blu-ray discs, 1X speed is defined as 36 megabits per second (Mbit/s), which is equal to 4.5 megabytes per second (MB/s). The fastest Blu-ray speed is 16X.
There are other factors that influence the time taken for a disc to be written to?
Resources available to the program: Reading or writing data on a disc consumes moderate to high level of system resources (including memory and CPU resources), and running other programs at the same time may force the CD/DVD drive to choose a lower speed automatically, to accommodate the available resources.
Disc quality: Optical disc recorders detect the available speed options based on the data which is available on the disc itself. However, some low quality discs make a high speed option available to the software, while the burning process can never reach that speed in practice.
Optimal writing speed
A higher writing speed results in a faster disc burn, but the optical quality may be lower (i.e. the disc is less reflective). If the reflectivity is too low for the disc to be read accurately, some parts may be skipped or it may result in unwanted audio artifacts such as squeaking and clicking sounds. For optimal results, it is suggested that a disc be burnt at its rated speed.
