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Home > Hardware Reviews > Optical Storage

Friday, March 20, 2009
LG-GH22NS30 22x

2. CD / DVD read tests

For our CD transfer rate tests, we used the Nero Disc 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, including full measurements.

-CD-ROM

- US RW

The following CD Speed graph shows the reading performance with US-RW media. Reading reached a maximum of 40x, as per the specifications.

 

- AudioCD

In the CD Speed Advanced DAE quality test, the drive's average speed was 28.54X with a quality score of 100.

A typical DAE task with an 80min non-protected Audio CD produced 28.8X average ripping speed.

- 90/99 mins Audio disc

 

90min Audio

99min Audio

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 -

 

PTP DVD-ROM -

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.

OTP DVD-ROM -

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-R

 

- DVD-RW

 

- DVD+R

 

- DVD+RW

 

- DVD+R DL

 

-DVD-R DL

 

-DVD RAM (2-5x media)

-DVD RAM (12x media)

data

small

Huge reading problems here with the Maxell 12x DVD-RAM disc.

- DVD Video Ripping

Ripping of a single layer DVD movie:

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

- Summary of reading tests

The drive was quick enough with all the CD and DVD discs and reading was accurate. However, the 12x DVD-RAM disc caused significant problems and it seems that the some exrta work is needed here to make the HG22NS30 read the specific disc.




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