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Home > Hardware Reviews > Optical Storage > DVD Recorders 8x

Friday, March 05, 2004
Mitsumi DW-7872TE

4. DVD reading tests

Mitsumi DW-7872TE DVD±RW recorder - Page 4

DVD reading tests

- Single Layer DVD-ROM (Click for CDSpeed results)

Mitsumi and Teac reported similar performance, while Sony was the slowest. The difference between the first two is negligible.

Mitsumi had the higher seek times among the other two drives. Although the reported seek times was not the worst we ever seen, we would like to be lower.

- Dual Layer PTP DVD-ROM (Click for CDSpeed results)

The two layers of a PTP DVD-ROM disc are read sequentially with the drive starting the read process from the inner tracks on the disc, which is the beginning of each layer, and progressing outwards towards to the outer tracks for each layer.

In this test DW-7872TE had the lower speed. However the difference was unconsidered.

Once again the seek times were increased for the Mitsumi drive. Teac was the best, in this test.

- Dual Layer OTP DVD-ROM

The first layer of an OTP dual layer DVD-ROM is read exactly the same way as the first layer of the PTP disc we tested previously. The difference here is the reading strategy of the second layer on the disc. The beginning of the second layer is located in the outer part of the disc, so the drive starts reading from the outer tracks inwards towards the inner tracks of the disc.

 

As it can been seen in the following screenshot the OTP dual layer DVD test disc had the same speed as the PTP one. The seek times are about in the same levels.

- DVD Ripping Tests

We measured the DVD-Video ripping speed of the Mitsumi DW-7872TE using the latest version of DVD Decrypter. The DVD Video title is the "Matrix" pressed DVD-Video.

Sony drive was the fastest while Mitsumi was the slowest. However the reported 7165 kb/s is a good transfer rate.

- DVD Recordable / Rewritable reading Tests

The chart below shows the Nero CDSpeed average reading speed results with the following media:

We would like the Mitsumi drive to be faster in RW reading. We estimate that the reported speeds are very low.




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