Basics
DVD-ROM Drive Technology - 39
Table 4: CD vs. DVD Comparison
CD
DVD
Data Layers
1
1 or 2
Data Capacity
Approx. 680 MB
Single Layer: 4.7 GBx2
Dual Layer: 8.5 GBx2
Data Transfer Rate
Mode 1: 153.6 KB/sec
Mode 2: 176.4 KB/sec
1,108 KB/sec, nominal
