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DVDs are used for digital representation of movies and other multimedia movies that combine sound with graphics. These days, DVD drives have largely replaced CD-Rom drives which is far inferior. These drives have transfer rates of various capacities. And most important to note, DVD drives are affordable. The ever growing supply of DVDs have made this possible. So you can opt to buy plain CD drives. More DVD Drives have gone out to the market, and everyday, the would be buyers tend to be confused by the sheer number. Computer DVD drives read the information from the PC DVD Rom. Computer DVD drives use DVDs which are data storage standard for computer based, audio and video technology. DVDs can hold much more information than CDs. Computer DVD roms offer advantages over CD-ROM drives. It offers much faster data transfer than a CD drive. It also allow you to store more data for long period of time. You can now store full length movies on a disk.