CD-ROM CD-ROM X Rating Data Transfer Rate 1x 150 Kilobytes/sec 2x 300 Kilobytes/sec 4x 600 Kilobytes/sec 8x 1.2 Megabytes/sec 10x 1.5 Megabytes/sec 12x 1.8 Megabytes/sec 20x 3.0 Megabytes/sec 36x ...