Memorex DVD±RW True-8x - Page 11

DVD Recording Tests

- Writing Performance

Memorex supports both minus and plus format for DVD writing. The available speeds are 8x for DVD±R and 4x for DVD±RW

Currently, only few 8x certified DVD+R media are available on the market and even fewer DVD-R 8x.

8x DVD-R

In order to be able to show the writing process of a DVD-R disc we used the latest version of NeroCDSpeed and a certified 8x DVD-R media. The disc was written under CLV mode with start speed at 6.00x. The speed was increased after the 600MB mark of the disc to 8.19x and the drive kept that speed until the end of the writing process. The reported average writing speed was 7.70x

8x DVD+R

Memorex True-8x uses the same writing method on both DVD-R and DVD+R media. On both media the drive increased the writing speed at the exact same area of the discs. After the end of the test NeroCDSPeed reported the same outcome. All three measurements from both discs are the same and therefore the writing method used by the drive.

4x DVD+RW

With DVD+RW media the drive supports 4x CLV writing. After the end of the test the manufacturers specifications were confirmed with start and end speed at around 4x.

4x DVD-RW

For the DVD-RW writing test we used a JVC-RW media certified writing at 4x. CDSpeed reported an average writing speed of 4x CLV. This is the first drive we tested that supports 4x DVD-RW writing.

- Burning Tests

The following graphs show the maximum writing speeds for all available DVD formats for the Pioneer drive. For comparison, we also include the writing times for the Sony DRU-530A and Plextor PX-708 drives.

Because of the writing speed specifications for DVD-R/-RW, the Pioneer drive gave the lowest writing times amongst the three drives. For DVD+R/+RW media where all drives support 8x and 4x respectively, Plextor drive was the fastest on the DVD+R writing with burning time of 7:53 while Sony leads in the DVD+RW writing with burning time at 13:44

The following screenshots were taken from Nero, after successful burnings. The recording project is the same dvd-video compilation for all the tests.

• JVC 8x DVD-R

• MC 8x DVD+R

• MC 4x DVD-RW

• MCC 4x DVD+RW

The table above presents the writing speeds of the drive for the various media formats.

- Packet Writing Tests

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