The iHAS424 performed very well when writing to DVD+R and DVD-R media at 24x. At this speed, it took the drive a little more than 4 minutes to write an entire 4.7GB DVD, beating the Optiarc AD-7240S by a small margin. The iHAS424 also had no problems holding its own when writing to DVD-RAM discs. However, due to its Z-CLV writing method, it wasn't as fast as some of the other drives when writing to DVD±RW media. Without compatible media, we weren't able to test the iHAS424 's full potential when writing to DVD±R DL media. As a result, the drive took nearly 19 minutes to burn 8GB of data.



Link: CDRLabs