Philips ED16DVDR DL Recorder - Page 2

Transfer Rate Reading Tests

- CD Format

The Philips ED16DVDR DL supports up to 48X reading speed for the CD format.

The Philips drive confirmed the manufacturer's specifications for 48X CD reading. The Memorex and Philips drives had pretty much the same performance and is probably due to the fact that all three drives use the same chipset.

-DVD Format

With the DVD pressed single layer disc, the end speed of 6.44X was not what we expected. We tried reading the specific media twice just in case, but both times the speed at the end of the task was 6.4X.

With a PTP DVD-ROM disc, the starting point of the two layers is at the inner part of the disc. The drive reads from the beginning of each layer (inner part) progreesing towards the outer part of the disc. The Philips and Memorex drives were the fastest with again the very similar performance.

With an OTP Dual Layer disc, the first layer structure is the same as the first layer on a PTP disc. The drive reads the first layer exactly the same way as PTP discs, and at the same speed. The starting point of the second layer of an OTP disc is located at the outer part of the disc. Once again, the Philips and Memorex discs were faster than the Freecom with almost identical speeds.

With rewriteable media for both formats, the Freecom drive seems to be unbeatable with almost double the reading speed of the other two drives.

The ED16DVDR ripped a full Dual Layer pressed DVD-Video movie at an average speed of 8729kb/sec, only slightly behind the Memorex dirve. The Freecom drive was quite slow in this task.

-Appendix

Nero CD-DVD Speed Graphs

• CD Pressed / CD-R / US-RW
• DVD Pressed SL / DVD Pressed DL PTP / DVD Pressed DL OTP /DVD-R / DVD-RW / DVD+R / DVD+RW