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DVD Read Tests
Unlike a majority of other drives on the
market, BenQ drives have no riplock in firmware and can rip both single and
dual layer discs in record time. Fortunately, the DW1655 is no
exception and the results here were very impressive!
As always, I test both single and dual layer
DVDs in these tests. For the dual layer tests, we will look at both
PTP and OTP disks. For those who are unfamiliar with these methods, I will
briefly describe once again the difference without getting too technical...
Dual layer discs are more than 4.38GB in size.
There are two ways in which they write these discs. One is PTP, which stands
for parallel track path, and the other is OTP which stands for opposite
track path. In PTP discs, both layers read from the inside of the disc to
the outside while OTP discs read from the inside to out and then back in for
the inner layer. This allows the drive to read both layers almost
continuously, with only a short pause to refocus the pickup lens. This is
particularly useful for movies, where long play time without interruption is
required.
1. CD-DVD Speed - Single Layer DVD
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Test Results |
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Transfer Speed
Average: 12.07x
Start: 6.62x
End: 16.12x |
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Seek Times
Random: 96ms
1/3: 109ms
Full: 164ms |
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CPU Usage
1X: 7%
2X: 12%
4X: 24%
8X: 49% |
The results of our single layer DVD discs
where almost identical to the DW1625, with the exception of the
substantially lower CPU usage. Overall, excellent performance and the
drive was able to easily hit 16x read speeds.
2. CD-DVD Speed - Dual Layer PTP DVD
Now, the most impressive in this area was just
how well it handles double layer DVD media. The results are much
better than those seen with their first LightScribe drive. With PTP
discs, it is capable of hitting 11.5x read speeds and maintain very low seek
times and CPU usage.
3. CD-DVD Speed - Dual Layer OTP DVD
The rare OTP disc tests were even more
impressive, able to hit a max of 12x and maintaining very low seek times and
CPU usage.
This is honestly as good as it gets for DVD
reading and not many drives out there can perform this well.
4. CD-DVD Speed - DVD-R, DVD-RW, DVD+R,
DVD+RW
The results using recordable media were just
as impressive. For testing, I gathered a variety of discs in all
formats and captured the average read speed from each. The results are
shown in the chart below...
The DW1655 handled +R media very well,
hitting 16x read rates with +R media and just under 12x with -R discs.
It seems to handle +R media the best though, and the highest read rates
recorded were present with both +R and +RW media.
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