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Home > Hardware Reviews > Optical Storage > DVD Recorders 12x

Thursday, July 29, 2004
Optorite_DD1203

2. Transfer Rate Reading Tests

Optorite DD1203 Dual DVD±RW Recorder - Page 2

Transfer Rate Reading Tests

- CD Format

The Optorite DD1203 supports up to 40X reading speed for CD media. Our tests confirmed this. Below are the transfer rate graphs:

The CD reading performance of the DD1203 is not the fastest in the comaprison but this is due to the fact that the LiteOn and Plextor drives support 48X speed with CD media.

- DVD Format

The DD1203 drive was slower than both the Plextor and LiteOn drives when using single layer DVD-ROM media, but again this is due to the speeds supported by each drive. However, the OptoRite drive did not quite reach 12X reading speed, as per the specs!

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, towards the outer range, for each layer. Here too, the DD1203 was slower than the Plextor, again due to the supported speeds but this time the drive managed to reach the manufacturer's stated specs for DL DVD-ROM media (8X).

Click for full graph

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 toward the inner part of the disc. The average reading speed was at 6.39X.

The DD1203 supports 12X reading speed for all four DVD formats (-R, +R, -RW, +RW). While the Plextor drive displayed fairly consistent speeds of just over 9X regardless of the format, the Optorite and LiteOn drives weren't quite so steady. With -/+R media, the Optorite drive was just slightly slower than the Plextor, but with RW media, its performance was way behind.

At 9441 kb/s, the Optorite offers a fast ripping transfer rate but again lags behind the Plextor drive.

- Appendix

Nero CD-DVD Speed Graphs




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