NEC ND-6500A - Page 2
Transfer Rate Reading Tests
- CD Format
The NEC ND-6500A supports up to 24X reading speed (3600kb/sec). Below are the transfer
rate graphs along with the comparative results for the LiteOn 832S and the LaCie d2 drive:
The NEC ND-6500A cannot compete with the other two drives when it comes to
reading speed, but this was more or less expected since the other two drives
support higher reading speeds
than
the ND-6500A. On the other hand, for a 24X reader, the NEC model performed
rather well.
- DVD Format
All three drives can read DVD media discs at 8X. The ND-6500A
was the slowest of all and with a significant speed difference. In fact, the
ND-6500A is the slowest reader at 8X among all drives that have this as
their maximum read speed. On the other hand, as stated in the first page of
this review,
speed
should not be a deciding factor for a drive like this, since it is intended
more for professional use where reliability should be the key issue.
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.
The ND-6500A's reading performance was again not the best with this disc
type also.
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 towards the inner part of the disc. Again, similar behaviour as before. The NEC burner was the slowest of all three burners.
The ND-6500A can read DVD ±R/±RW media up to 8X. It reported
very good reading performace with +R and -R media, but with -RW and +RW media,
it was again slower than the other two drives.
As you can probably see in the graph above, reading speed is not a strong
point of the NEC ND-6500A.
Nero CD-DVD Speed Graphs
