TDK 882N Recorder - Page 2
Transfer Rate Reading Tests
- CD Format
The TDK 882N supports up to 40X reading speed. Below are the transfer rate
graphs, along with the comparison with the Sony DRU-700A drive:
Speed differences between the two drives are negligible. In general,
the TDK was slightly slower than Sony's drive.
Only with Ultra Speed CDRW media was
drive faster, but here too,
no real differences in speed.
- DVD Format
The Sony DRU-700A was faster with pressed single layer media.
The TDK 882N gave speed values which more closely matched the Plextor
The two layers of a PTP DVD-ROM disc are read sequentially
with the drive starting reading from the inner part of the disc, which is the
beginning of each layer, progressing towards the outer range, for each layer.
Sony's drive was again faster than the 882N.
The graph shown above indicates the reading performance of
the TDK 882N with OTP dual layer media. 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 and progreeses
towards the inner part of the disc. The average reading speed was 5.41X with
value of 2.87X and a highest value of 7.21X. Exactly the same performance was
reported by the NEC ND-2510A.
As shown above, the Sony DRU-700A continues to be slightly faster than the
TDK 882N even with DVD-R/-RW/+R/+RW media.
There is a big ripping speed difference. We know that NEC's official firmware
for the ND series includes rip lock. This means that the drive can achieve
higher speeds, but the firmware prevents it from ripping higher than an upper
limit of 5.2~5.5X. This explains this difference shown above. It
TDK's official firmware includes this speed barrier.
Nero CD-DVD Speed Graphs