CD Recording Tests

- CD-R Writing Tests

Memorex supports 4X , 8X ,16X CLV and 24X maximum writing speeds. At all speeds the writing method is Z-CLV. Below you can see the CDSpeed writing simulation graph with Taiyo Yuden 48x CD-R media.

The characteristic of Z-CLV is a series of zones that look like steps, each one reaching closer to the maximum speed of the drive. When the maximum speed is reached, the drive speed levels off and remains constant until the end. According to the graph, Memorex True-8x started the writing process at 15.90x. The speed was increased at the 10min of the disc to 20.5x and was kept constant until the 19min. On the final step the speed was increased again to 24x until the end of the process.

- Recording Times

We created an 80min data compilation with Nero Burning Rom and recorded it on a 700MB disc. Both Memorex and Pioneer support 24x writing under Z-CLV and therefore the time both drives needed to complete the writing task is similar. Nec was about one minute faster because it supports 32x maximum writing.

Below are the best writing times at all available writing speeds of all three drives. The graph shows that Memorex and Pioneer finished each writing process at almost the same time while Nec was faster in all speeds.

In the following graph you can see the recording times with various media brands. All tested media were written at the maximum allowed speed which means very good media compatibility.

- CD-RW Writing Tests

The Memorex True-8x supports 10x, 16x, 20x and 24X rewriting speeds with Ultra Speed rewritable media. Below you can see the results from the CDSpeed writing simulation test with blank 24x US-RW media from Mitsubishi Chemicals. The test confirmed the drives specifications for 24x rewriting. The simulation process started at 16.01x and finished at 24.42x resulting the average speed of 22.33x. The drive reached the maximum 24x writing speed at the 19th minute of the disc and as Nero CdSpeed confirms the writing strategy is Z-CLV.

In order to provide a comparison of the three drives when writing on HS-RW media, we used Nero Burning Rom software to burn a 651MB data compilation using 24x US-RW media from Mitsubishi Chemicals. Both Memorex and Pioneer support 24x rewriting speed and finished the writing process at exactly the same time, 6:01min, while Nec was 70sec slower due to the fact that it supports 16x max rewriting speed. On the quick erase test , Memorex proved to be 4sec faster than Pioneer.

- Packet Writing Tests

For the packet writing test we used the InCD packet writing software from Nero and Mitsubishi Chemicals 24x US-RW media. The test file was a 403 MB file (412.822 KB) and we used the drag and drop method from Windows Explorer to write the file from our hard disk to the RW media. Memorex was faster on the writing process with 16.4x average speed, while the read process average speed reported was 13.7x.

- Other features