A CD drive is faster than a DVD drive and a lot cheaper. However, DVD
drives work with all CDs and DVDs.
DVD Drives
All the aforementioned CD specifications apply for DVDs in addition to the
following:
Generation
The first generation DVD drives are equivalent to 8X CD-ROM
drives. The second generation drives are equivalent to 12X CD-ROM
drives. The first generation drives can not read CD-R discs. So
make sure to get a second generation DVD drive (also known as DVD-II).
DVD
ROM lets you read DVDs on your
computer.
DVD
RW allows you to burn your own data or
create a video on your desktop.