Mitsumi DW-7872TE DVD±RW recorder - Page 12

DVD Recording Tests

- Writing Performance

The Mitsumi DW-7872TE supports DVD-R/RW and DVD+R/RW writing. The maximum supported speed for DVD+R and DVD-R is 8x and 4x respectively, 4x CLV for DVD+RW and 2x for DVD-RW media.

8x DVD+R

A 8x DVD+R disc from CMC Magnetics was used to check the 8x writing strategy of the drive. The software used was Nero CDSpeed, and its "create disc" function.

The drive started the writing at 3.99x, maintaining this speed until the 800MB address mark on the disc, where the drive steps up to 6x until 2.75GB where once again step up to 8x writing for the rest of the recording (hence Z-CLV). The average speed is 6.33x.

CMC 4x DVD-R

Maxell 4x DVD+RW

CMC 4x DVD-RW

- 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. For comparison, we also include the writing times for the Teac DV-W58G and Sony DRU-530A.

With the DVD-R/RW media Mitsumi was the fasted. However the reported recordings times for DVD+R/RW was the slowest for Mitsumi, as we expected, due to the average 6,3x for this format.

The table below presents the writing speeds, media name and media code for the various discs used.

Although TY and Maxell DVD+R have the same ID, they burned in different speeds. Below are the screenshots from Nero:

Maxell 4x DVD+R

TY 4x DVD+R

- 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).