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Home > Hardware Reviews > Optical Storage

Friday, November 24, 2006
Plextor BD-R PX-B900A

2. CD - DVD Reading

For our CD transfer rate tests, we used the Nero CD-Speed utility and a set of Pressed CDs. The drive can read CD media at a maximum speed of 32X.

Pressed CD -

Press for Larger Picture


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

Press for Larger Picture

- AudioCD

In the CD Speed Advanced DAE quality test, the drive's average speed was 18X with a quality score of 100.

- 90mins Audio disc

- 99mins Audio disc

The drive cannot read 90 or 99 minute CD media.

- 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 8X maximum speed, both single and dual layer media.

DVD Pressed SL media -

8X reading speed was achieved with DVD-ROM Single Layer 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.

8X reading speed with both PTP and OTP dual layer media .

- DVD Ripping speed:

Average - 6.127 kB/s (4.4x)
Maximum - 8.625 kB/s (6.2x)


The drive can read read and write DVD-RAM media at 5X. For our test, we used a 5X DVD-RAM disc from Maxell, burned with the LG GSA-4120B. The disc was read without any problems.

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