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Home > Hardware Reviews > Optical Storage

Wednesday, December 26, 2007

2. CD - DVD Reading

For our CD transfer rate tests, we used the Nero CD-Speed utility and a set of data and audio CD-R/RW/ROM. The drive can read CD media at a maximum speed of 48X.

For each CDSpeed graph, you can click on the image to see the complete screenshot, which includes the measurement results.



The following CD Speed graph shows the reading performance with US-RW media. For all the CDSpeed graphs, you can click on the image to see the full CDspeed snapshot.

- AudioCD

In the CD Speed Advanced DAE quality test, the drive's average speed was 33.19X with a quality score of 100.

- 90 mins Audio disc

- 99 mins Audio disc

As seen in the test results above, the LITE-ON drive failed to read both the 90 mins and 99 mins audio discs. The reading session of the 90 mins audio disc began at a speed of 1X, and remained at that speed until producing an "unrecovered read error" at the 45min mark. With the 99 min disc, despite the fact that the drive managed to read to the end of the recorded surface, had a lot of speed deviations after theb65 min mark and eventually produced an "Unrecovered read error" at the end.

- DVD Format

Now let's have a look at how the drive performs with DVD media. This time, a set of SL and DL DVD media was used. The drive is capable of reading at 20X maximum speed for single layer DVD ROM and at 8X for dual layer DVD ROM media.

DVD-ROM SL media -


The two layers of a PTP DVD-ROM disc are read sequentially with the drive starting reading from the inner part of the disc, which is the beginning of each layer, progressing towards its outer range.


The first layer of an OTP dual layer DVD-ROM is read exactly the same way as the first layer of the PTP disc we tested previously. The difference here is the reading strategy of the second layer of the disc. The beginning of the second layer is located in the outer part of the disc, so the drive starts reading from the outer tracks and progresses towards the inner part of the disc.








Perfectly smooth graphs in general from the LITE-ON drive, which performed very well with our DVD reading test media.

- DVD Ripping speed.

Average - 11,855 kB/s (8.6x)
Maximum - 16,787 kB/s (12.1x)

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