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DVD Read Tests
In
our DVD reads tests, we will be testing both single layer and dual layer
DVD's. 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 try to describe
them without getting too technical before we begin.
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.
Now, based on what I've seen with other BenQ drives, the results here should
be very impressive!
1. CD-DVD Speed - Single Layer DVD
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Test Results |
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Transfer Speed
Average: 12.01x
Start: 6.58x
End: 15.94x |
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Seek Times
Random: 93ms
1/3: 106ms
Full: 161ms |
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CPU Usage
1X: 7%
2X: 13%
4X: 24%
8X: 48% |
Folks, this is honestly as good as it gets! The BenQ DW1640 has no rip
lock and was easily able to hit 16x read speeds with single layer DVD media.
On top of that, the seek times and CPU Usage remained extremely low.
This is honestly the best results I've ever encountered and even outperforms
the DW1620 in comparison.
2. CD-DVD Speed - Dual Layer PTP DVD
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Test Results |
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Transfer Speed
Average: 8.24x
Start: 4.98x
End: 10.17x |
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Seek Times
Random: 90ms
1/3: 98ms
Full: 145ms |
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CPU Usage
1X: 7%
2X: 13%
4X: 24%
8X: 48% |
Dual layer read performance was no exception
either. Just take a look at the maximum read rate and super low seek
times on the not-so-common OTP discs.
3. CD-DVD Speed - Dual Layer OTP DVD
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Test Results |
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Transfer Speed
Average: 9.07x
Start: 4.97x
End: 11.94x |
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Seek Times
Random: 96ms
1/3: 106ms
Full: 161ms |
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CPU Usage
1X: 7%
2X: 12%
4X: 24%
8X: n/a |
Read performance with PTP discs
was also exceptional, hitting 12x read speeds and maintaining ultra low seek
times and CPU usage.
4. CD-DVD Speed - DVD-R, DVD-RW, DVD+R,
DVD+RW
Read performance with recordable DVD media was also highly impressive.
Two discs from each format were used to capture the maximum transfer rates.
The table below show the results...
Now, the results here really took me by
surprise after reviewing a couple of their previous drives. There was
a significant improvement in transfer rates when compared to their previous
models. The DW1640 had absolutely no problem hitting 16x read speeds
with both DVD+R and DVD-R discs. With rewritable media, the drive
maxed in at about 12x. Very impressive!!
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