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The tests were done using
Nero CD Speed test. The first test run was a Digital Audio Extraction
(DAE) test. This test determines the average and maximum speed a drive
is capable of extracting audio data from a CD. In this test, the
CenDyne drive achieves 16.58x average speed. The access time test
determines how long it takes for a drive to respond and find the data
requested by the user. The random seek time for the audio CD is 111
milliseconds (ms), the full seek time is 218 ms, and the 1/3 seek time
is 155 ms. The higher the times; the longer the user has to wait to
obtain the data requested. The DAE quality test returned a flawless
10. The drive utilized the P-CAV mechanism for this audio CD. CPU
usage was 47% at 8x. Figure 6 shows the results of the audio CD test.
The data CD test was performed using a Warcraft III CD. The random
seek time for data CD is 85 ms; the 1/3 seek time is 93 ms; and the
full seek time is 147 ms. The drive picked Z-CLV to perform the data
test. The average speed was measured to be 18.45x. CPU usage was 41%
at 8x. Figure 7 illustrates the result of the data test.
Digital Audio Test
Click to enlarge
Click to enlarge
The writing test was performed using
General Quality (GQ) Compact Disk Recordable (CDR) rated at 48x. The
CD recorded was a copy of Warcraft III, which is 616 Megabytes (Mb).
The CenDyne drive recorded the CD in 5:28 min at 24x. A 696 Mb data
CD was recorded in 5:43 min at 24x; an attempt was made at 40x, but
the drive failed to successfully record the CD. Figures 8 and 9 show
the results of the writing tests.
Warcraft III Recording Test
Click to Enlarge
Failed Data test
Click to Enlarge
The drive possesses both Z-CLV and P-CAV,
which could be an advantage if it picked the right one to use during
the recording process of a CD. The drive has a low 2 Mb Buffer
memory compared to other CDRW drives. The reading speeds were
definitely lower than expected, not even half of the claimed 48x
speed was achieved during the reading test. The drive utilizes
Just-Link buffer Underrun protection, and it seems to work on most
occasions, but as the result showed, it failed to prevent an error
during the recording of the data CD.
The drive can sometimes be very noisy
during the initial stages of recording, but it dissipates as it
moves towards the outer part of the CD. The back has the usual IDE
connector, power connector, and analog/digital audio connectors.
Opening the drive reveals that it utilizes Ricoh chips, and most
likely a similar mechanism to that of Ricoh drives. The drive seems
to lack support from software vendors. As of today, February 25th,
2003, the only software found to support the drive are Ahead Nero
Burning ROM version 5.5, and Roxio EZ CD Creator. Golden Hawk
Technologies CDRWIN does not support the drive.
The CDRW drive uses too much of the CPU
power. At 8x it uses almost 50% of the CPU processing power. This
lowers the performance of the PC. Running other programs while
recording a CD will most likely cause the recording process to fail.
In conclusion, the drive performed well
for its cost. At the price of $40 it is a good buy for the dollar.
Burn-Proof Features, Sanyo Inc. “Burn-Proof
CDR Info Articles, CDRinfo.com “Z-CLV
CenDyne Products, CenDyne Inc. “CDI
- Buffer Underrun Protection
- Easy to read manual
- Good CD recording software package
- Access Time slower than expected
- Noise at the beginning of some recording processes
- Lack of software support
- Low Buffer memory (2 Mb)