Panasonic LF-D521 DVD-RAM
5. DVD reading tests
Panasonic LF-D521 IDE DVD-RAM - Page 5
DVD reading tests
- Test Method
We used Nero CDSpeed to run DVD tests. All tests were performed at least 3 times with the same DVD title (we show the average results). The tests discs were one single sided, single layer DVD-ROM, one single sided, dual layer DVD-ROM, and one disc representing each one of the DVD-R/RW, DVD+R/RW and DVD-RAM formats.
- Single Layer DVD-ROM reading: (Click for DVDSpeed results )
Panasonic LF-D521 supports a 12x CAV maximum reading speed for the DVD format. The drive started reading at 5.04x and finished at 12.11x. The average reading speed is 9.05x. The Pioneer drive was slightly faster in the same test.
The specifications of Panasonic LF-D521 give the drive a 110msec average seek time for the case of the DVD-ROM format. In our tests the drive was very fast in all the seek modes. The Pioneer A05 is slower, especially in the Full stroke test.
- Dual Layer DVD-ROM reading: (Click for DVDSpeed results)
The drive supports 6x CAV reading speed for the dual layer DVD-ROM discs. The average reading speed for each layer is 4.5x. The Pioneer uses the same reading speed as the single-layer DVD-ROM media (8x CAV).
The drive gave good seek times with dual layer media. Compared to the Pioneer DVR-A05, the Panasonic drive is faster in the Random and Full stroke tests.
- DVD Ripping Tests
We measured the DVD Ripping speed using the "Matrix" DVD Video title and DVD Decrypter.
Panasonic LF-D521 ripped the DVD files at an average speed of 5779 kb/sec. The performance is high, and is translated to a 4x average speed. As most Pioneer drives, the DVR-A05 is a slower ripper and finished the same task at around 2750 kb/sec.
- DVD reading Tests
The charts below shows the Nero CDSpeed results with the following media.
In this chart you can see the average reading speeds of Panasonic LF-D521 with 4x DVD-R/+R, 2x DVD-RW, 2.4x DVD+RW and DVD-RAM media. The drive supports 6x CAV average reading speed for DVD-R/RW and DVD+RW discs. Notice that X equals to 1.38 MB/sec for the DVD format.
With DVD+R media, the drive behaved differently and accelerated up to 12x, to drop the reading speed by the end of the disc. The reason is that the drive probably recognized the inserted disc as a DVD-ROM!
The supported DVD-RAM reading is 2x CLV.
Panasonic LF-D521 gave the same average speed in the case also of the DVD-R/RW and DVD+RW discs. As we mentioned, the performance when using DVD+R media was higher, while the DVD-RAM itself was read at 2x CLV.
