Aopen DRW8800/AAN - Page 4

DVD reading tests

- Single Layer DVD-ROM (Click for CDSpeed results)

To check the reading performance of the Aopen drive with single layer DVD-ROM, we used NeroCDSpeed and the 820A test disc from Abex.

The single layer DVD reading test gave similar average reading speeds for all writers. The 11.91x reported end speed for the Aopen drive is acceptable although it was the slowest among the three. The disc was read under CAV mode with an average speed of 8.9x

The seek times of the Aopen drive are slighlty higher than the acceptable level. The drive returned faster seek times than Memorex but proved to be slower than Teac in all modes.

- Dual Layer PTP DVD-ROM (Click for CDSpeed results)

The two layers of a PTP DVD-ROM disc are read sequentially, with the drive starting the read process from the inner tracks on the disc, where lies the beginning of each layer and progressing outwards towards to the outer tracks for each layer. The tools for this test are Nero CDSpeed and the Abex 840 test disc.

Although previously NeroCDSpeed reported similar reading speeds for all devices with the single layer DVD-ROM reading test, the dual layer disc reading results are quite different. The Aopen drive returned results slower than the other drives, with the Memorex and Teac drives having identical speeds.

The seek times of the Aopen and Memorex drives are increased in comparison to Teac. Aopen finished the Full seek after 236ms and that result is 67ms slower than Teac but 69ms faster than Memorex.

- Dual Layer 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 on 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 inwards towards the inner tracks of the disc.

The reading performance of the AOpen drive during the reading process of the dual layer OTP disc was smooth and accurate. The drive read the disc under CAV with an end speed of 7.20x and an average speed of 5.40x. The reported seek times however are slightly high.

- DVD Ripping Tests

We measured the DVD-Video ripping speed for the Aopen 8x8 DVD Dual using the latest version of DVD Decrypter. The DVD Video title is the "Matrix" pressed DVD-Video.

The graph above shows that Aopen and Memorex drives finished the ripping process with about the same average speed but the Teac drive provided double the speed.

- DVD Recordable / Rewritable reading Tests

The chart below shows the Nero CDSpeed average reading speed results with the following media by MC:

• 8x DVD+R
• 4x DVD+RW

• 8x DVD-R
• 4x DVD-RW

Just as with the other two tested drives, the Aopen drive returned similar average reading speed independently of the tested DVD-R/RW or DVD+R/RW media. The average reading speed of the Aopen drive however, with all tested media is slower in comparison with the other two writers. The Aopen drive read all media under CAV reading strategy.