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Home > Hardware Reviews > Optical Storage

Tuesday, July 14, 2009
Lite-On iHAS324

2. CD, DVD reading tests

For our CD/DVD transfer rate tests we used the Nero Disc Speed utility and a set of data and audio CD-R/RW/ROM media. Here we test the maximum reading speed of the LiteOn drive for each type of disc. For comparison, we have included the corresponding reading results of another 24x DVD burner, the Optiarc AD-7240S.


Optiarc AD-7240S LiteON IHAS-324
Average Speed 36.67x 37.05X


The following CD Speed graph shows the reading performance with US-RW media.

Optiarc AD-7240S LiteON IHAS-324
Average Speed 31.27x 30.59x

- AudioCD

In the CD Speed Advanced DAE quality test, the drive's average speed was 33.11X with a quality score of 100.

Optiarc AD-7240S LiteON IHAS-324
Average Speed 28.49x 33.11x


Digital Audio Extraction or DAE is important when we try to read the files stored on an audio CD and store them in our hard disk drive. The procedure is not always that simple and the fidelity of the extracted data depend on the way each drive handles these data.

The majority of the software that support this procedure, commonly known as "ripping", will just read the audio files and store them on your hard disk. However, this approach is not recommended for all drives, since it may result to read or sync errors if your drive does not support report of C2 error pointer information and also what the author of the EAC (Exact Audio Copy) software describes as "accurate stream" and " non-caching."

According to EAC, the LiteON IHAS-324 drive does not support "caching ", but it supports "Accurate stream" and reports "C2 error" pointer information.

Accurate stream and C2 error reporting is always welcome and contribute to reliable and fast audio extraction. Generally, if you select a drive for extraction better have a look that the drive does not cache audio data.

If you are sure about the physical condition of your audio CD and you need faster extractions, you may chose other utilities such as the CD DAE software. A typical ripping task finished at an average reading speed of 33.6X, using CD DAE:

- 90 mins Audio disc

90min Audio disc

Optiarc AD-7240S LiteON IHAS-324
Average Speed 36.78x 36.98x

- DVD Format

Now let's take 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 for single layer DVD ROM and at 12X for dual layer DVD ROM media.

DVD-ROM SL media -


Optiarc AD-7240S LiteON IHAS-324
Average Speed 12.04x 12.12x


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.

Optiarc AD-7240S LiteON IHAS-324
Average Speed 8.85x 9.14x


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.


Optiarc AD-7240S LiteON IHAS-324
Average Speed 8.85x 9.13x

DVD-R- Average read 12.14x

DVD-RW - Average read 9.01x


DVD+R - Average read 12.14x

DVD+RW Average read 9.03x




DVD Ripping speed -

Ripping of a single layer DVD movie:

  LiteOn iHAS324 Optiarc AD-7240S
Average 11.950 KB/s (8.6x) 11.761KB/s (8,5x)
Maximum 16.807 KB/s (12.1x) 16.451KB/s (11.9x)


The reading process of almost all media was completed without read errors and at speeds that match the drive's specifications. In addition, the drive was faster in most tests than it's competitor, the Optiarc AD-7140S.

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