CD & DVD Speeds :

In CD technology, 1X equals 150 KBps. For DVD, 1X equals 1.38 MBps.

DVD+RW (HP DVD-RW 100i):
Capacity to 4.7GB
Writes at 2.4X, that is, 3.32 megabytes per second, and far faster than any CD-RW drive. In addition, it writes CD-Rs at 12X, writes CD-RWs at 10X, reads CD-ROMs at 32X, and reads DVD at 8X, making it a great all-purpose drive. DVD+RW discs now sell for about $15 each (11/01). Rated for only 1000 rewrites. Prices at about 600.00.