FREECOM DVD+/-RW8J - Page 11

DVD Recording Tests

- Writing Performance

The Freecom drive supports both plus and minus formats. According to the specifications the drive writes a DVD+R media at approximately 8:30 minutes while it needs double the time for -R discs. With the rewritable format, 4x and 2x are the supported writing speeds for +RW and -RW respectively.

Mitsubishi Kagaku 8x DVD+R

The writing process started at 3.95x but the drive soon increased the speed after only the first 300Mb of the writing process. The second step speed increase occurred after 1Gb where the drive reached the maximum writing speed of 8x. The task ends with end speed at 8.27 and an average speed of 7.43x

CMC 4x DVD-R

CLV writing strategy for the -R format and average speed of 3.97x reported from NeroCDSpeed after the end of the writing simulation.

CMC 4x DVD+RW

The certified 4x rewritable media from CMC recorded at 4x writing speed where the process ended with an average speed 4.01x

CMC 2x DVD-RW

The -RW disc was written at 2x under CLV with average writing speed 1.98x

- Burning Tests

The best recording times are illustrated in the following table after burning 4315MB of data on various DVD±R, DVD±RW media, using the maximum allowed writing speed for each disc.

The graphs above show the difference in times that each drive needed to write both writable and rewritable media. The Freecom drive was fast with the +R and +RW format while it needed more time than the other two drives for the -R and -RW format writing tasks.

- Packet Writing Tests

For this test we copied a 403 MB file (412.822 KB) from the hard disk (on the same PC as the recorder) to the formatted RW media through Windows explorer (drag and drop).