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Home > Hardware Reviews > Optical Storage

Thursday, August 02, 2007
Lite-ON LH20A1S

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 media. The drive can read CD media at a maximum speed of 48X. The results of two other 20x DVD burners have been included in the charts for comparison.

For each CDSpeed graph, you can click on the image to see the complete screenshot, including the measurements 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 28.53X with a quality score of 100.

- 90/99 mins Audio disc

Both the 90min and the 99 min audio CDs produced a read error, as you can see in the screenshots above.

- 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 16X maximum speed with single layer DVD ROM and at 12X with 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.








- DVD Ripping speed.

Average - 11.705 kB/s (8.5x)
Maximum - 17.089 kB/s (12.3x)

In general, the drive is a very capable reader. It read all our CDs and DVDs except for the 90 and 99 min CDs, and at speeds as fast as other similar drives on the market.

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