Optorite DD0401 Dual DVD Recorder - Page 13

DVD Recording Tests

- Writing Performance

The Optorite DD0401 supports DVD-R/RW and DVD+R/RW writing. The maximum supported speed for DVD+R is 8x (4x~8x Z-CLV), 4x CLV for DVD-R, 4x CLV for DVD+RW and 2x CLV for DVD-RW media.

Currently, only a few 8x certified DVD+R media are available on the market. Optorite's suggested DVD media list for writing is presented on this page. The supported 8x DVD+R media came from Mitsubishi Chemicals, CMC Magnetics, Ricoh and Taiyo Yuden.

We used an 8x DVD+R disc from Mitsubishi Chemicals, in order to check the 8x writing strategy employed by the drive. The software we used is Nero CDSpeed, and its "create disc" function.

The Optorite DD0401 started writing at 3.99x, and kept this speed up until the 1.2 GB mark, whence it accelerated to 8x. The average writing speed was 6.85x.

DVD+RW

The media used for DVD+RW writing simulation came from Ricoh (4x).

DVD-R

- Burning Tests

We burned 4315MB of data on various DVD±R, DVD±RW media. The best recording times are illustrated in the following table. For comparison, we also include the writing times for the Philips DVDR824P and Plextor PX-708A drives:

The Optorite DD0401 drive needed 9:29min to write the 8x DVD+R disc (4-8x Z-CLV). The other drives were faster, offering 6x-8x Z-CLV writing. The remaining recording times are almost the same for all media formats due to the CLV writing strategy of the drives.

The following screen shot comes from Nero, after successful burning with Mitsubishi Chemicals 8x DVD+R, and 4x DVD+RW media. The amount of data burned was the same for all tests.

• Mitshubishi Kagaku 8x DVD+R (8x recording)

• Mitsubishi 4x DVD+RW

The Optorite DD0401 selects the maximum allowed recording speed according to the inserted blank DVD discs. In the following table you can see the maximum permitted writing speeds with various media.

- DVD±RW Packet Writing

The Optorite DD0401 supports packet writing with DVD+RW and DVD-RW media. To test the performance of the DVD+RW format, we formatted some Ricoh 4x DVD+RW discs and started the drag'n drop process, using a 1GB file. With the background formatting in full progress, we noted the reading / writing performance.

For the DVD-RW format we used a 2x DVD-RW from MC. The performance of the drive is illustrated in the table below: