LiteOn
DVD+RW LDW401S -
Page 4
DVD reading tests
In the DVD reading tests we compare the LiteOn LDW-401S with
another DVD+RW writer, the Ricoh MP5240A.
- Single Layer DVD-ROM (Click
for CDSpeed results)
The differences between the drives was expected, since
the LiteOn offers 12x CAV reading while the Ricoh drive is slower with 8x
CAV. The LiteOn drive read the single layer DVD-ROM fast and
the reported
average
speed
was 9.21x.
The
end
speed
for the drive reached the 12.32x.
The seek times of LiteOn LDW-401S are lower than Ricoh MP5240A as
far as it concerns the random mode, 89ms to 112ms.
At the 1/3 mode the LiteOn was again faster with 97ms over the 125ms of Ricoh.
The results were proportional at the Full seek time mode where LiteOn was faster
with 178ms.
- Dual Layer PTP DVD-ROM (Click for
CDSpeed results)
The dual layer DVD-ROM was read under CAV mode by LiteOn approaching
the same speed
on both
layers (8x).
The average reading speed,
reported by NeroCdSpeed, was 6.31x. The drive is slightly faster than Ricoh
MP5240A.
The seek times reported were higher than those with the single layer DVD-ROM.
However, this is normal and was noticed with all the DVD readers. LiteOn LDW-401S
needed 94msec for the random seek and 236msec for full seeking:
- Dual Layer OTP DVD-ROM
The
first layer of an OTP dual layer DVD-ROM is read exactly the same way as the
PTP disc we tested previously. The difference here is the reading
strategy of the second layer of 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
toward the inner part of the disc.The performance is not different than in
the previous test, with the drive
to give a 6.27x average reading speed.
The seek times of LiteOn with the dual layer OTP DVD-ROM are low with reported
full seek time at only 164ms.
- DVD Ripping Tests
We measured the DVD Ripping speed using the "Matrix" DVD Video
title (4.7GB) and the latest version of the DVD Decrypter software.
LiteOn manage to reach the maximum speed of 11.264KB/s on the DVD ripping
test and needed 9:45min to finish the task. The average reported speed was
9.264KB/s (6.86x).
- DVD Recordable/Rewritable
The chart below shows the Nero CDSpeed reading tests with the following
media:
As we can see from the graph above LiteOn LDW-401S gave back approximately
the same average reading speed for the DVD-R and DVD-RW media. With
the other two formats, DVD+R and DVD+RW, the average speed is exactly the
same at 4.63x. The drive reached the maximum speed of 6.85x with the "dash" and
the maximum 6.17~6.25x "plus" discs. All discs were read under CAV
mode.
The Ricoh drive was faster in all reading tests but we have to consider that
it supports the 8x CAV reading speed.
