detail information
| Posted by | Jan S. |
| Posted on | 06/11/04 17:58 |
The specifications of the Pioneer DVR-A08XLA state that the drive is able to write CD-R discs at 32x. Let us find out how the drive really performs in speed and quality.
Writing Data CD-R discs:
Let us first take a look at the CD-R write technology used by the Pioneer DVR-A08XLA:
As we could see the Pioneer DVR-A08XLA uses Zone-CLV (Zone-Constant Linear Velocity) to write at its rated speed of 32x, this gives an average speed of 24.94x. This of
course makes it a lot slower than many other new drives, let's compare it with
two of the fastest writers below.

As we could see the Plextor PX-708A uses P-CAV (Partial-Constant Angular Velocity) writing strategy to reach it rated speed of
40X. This gives an average speed of 33.38x.
As we could see the Plextor PX-712A uses CAV (Constant Angular Velocity) writing
strategy to reach it rated speed of 48X. This gives an average speed of 36.43x.
And as a last test we wrote a disc containing 700Mb using
Nero Burning ROM software. Writing method used is DAO (Disc At Once), and the disc is set up as a non-multisession disc with 'finalize disc"
enabled.

The Pioneer
DVR-A08XLA used 4 minutes and 15 second to write the disc at 32x. Let us see how this compares to other
drives;
|
CD-R |
Supported |
Write |
Start |
End |
Average |
Write |
Write |
|
Plextor |
40x |
P-CAV |
20.37x |
39.90x |
33.38x |
2m:55s |
2m:58s |
|
NEC |
32x |
Z-CLV |
16.01x |
32.05x |
27.16x |
3m:34s |
3m:43s |
|
NU |
40x |
CAV |
18.20x |
41.11x |
31.15x |
3m:01s |
3m:2s |
|
Lite-On |
40x |
CAV |
18.60x |
41.78x |
31.67x |
3m:01s |
3m:3s |
|
BTC |
40x |
CAV |
18.86x |
42.44x |
32.16x |
3m:03s |
3m:5s |
|
MSI |
40x |
CAV |
18.45x |
41.47x |
31.45x |
3m:9s |
3m:13s |
|
Plextor |
48x |
CAV |
21.28x |
48.14x |
36.43x |
2m:43s |
2m:45s |
|
Philips |
40x |
CAV |
17.74x |
40.60x |
29.86x |
3m:21s |
3m:17s |
|
BenQ |
40x |
CAV |
17.75x |
40.61x |
29.37x |
3m:24s |
3m:23s |
|
Pioneer |
32x |
Z-CLV |
16.03x |
32.20x |
24.94x |
4m:00s |
4m:15s |
As we could see it's over a minute slower than the fastest
drives due to the low writing speed of only 32x Z-CLV. But the writing quality
may make up for the lack of speed, head on and find out.
Write
Quality:
We will test CD-R discs from a total of 7 different CD-R
manufacturers. To really measure the write speed, we used the 'create data CD"
function in Nero CD-Speed. The discs were written at the maximum speed that the
drive supports. For the quality test, we used K-Probe 2 which is a tool
developed by a Lite-On Employee.
It runs under Windows and works with drives made by Lite-On. Also note that different drives and
different reading speeds may affect the results obtained when scanning the
discs. We used a Lite-On
LTR-52246S drive with firmware 6S0F and scanned the discs at 48X speed.
A written CD-R disc will always have some C1 errors; C1
errors are easily corrected by the drive's error correction capabilities. The
next level of errors is C2, while C2 errors could also be corrected by most
drive's error correction capabilities; they are not wanted on a good quality
disc. A good disc should not contain any C2 errors, and preferably have an
average C1 error amount of below 2.0 for the best discs, or at least below 10.0
average for good quality discs.
After C2 errors there are only un-correctable errors that will make a disc
unusable.
Why wait any longer? Below are the obtained results:
|
Brand: |
Memorex, thanks to Memorex for providing it. |
|
Manufacturer: |
CMC Magnetics |
|
Code: |
97m26s66f |
|
Disc Type: |
CD-R |
|
Recording Layer: |
Dye Type 6: Short Strategy (Phthalocyanine) |
|
Capacity: |
79:59.73 (703MB) |
|
Certified Speed: |
48x |
|
Write Speed: |
32x |
|
Write Time: |
4m:00s |
|
C1 Average/Sec: |
11.92 |
|
C2 Average/Sec: |
0.0 |
CMC Magnetics
is not known for making the best CD-R discs and as we could see the error level
is a bit high, especially the area written at 32x.

|
Brand: |
MMORE |
|
Manufacturer: |
Moser
Baer India |
|
Code: |
97m17s06f |
|
Disc Type: |
CD-R |
|
Recording Layer: |
Dye Type 6: Short Strategy (Phthalocyanine) |
|
Capacity: |
79:59.74 (703MB) |
|
Certified Speed: |
52x |
|
Write Speed: |
32x |
|
Write Time: |
4m:00s |
|
C1 Average/Sec: |
3.27 |
|
C2 Average/Sec: |
0.0 |
The best results we got, ironically enough it's still worse
than the worst result we got with the BenQ DW1620A…

|
Brand: |
Verbatim Data Life Plus |
|
Manufacturer: |
Mitsubishi |
|
Code: |
97m34s23f |
|
Disc Type: |
CD-R |
|
Recording Layer: |
Dye Type 3: Long Strategy (Cyanine or AZO) |
|
Capacity: |
79:59.73 (703MB) |
|
Certified Speed: |
48x |
|
Write Speed: |
32x |
|
Write Time: |
4m:01s |
|
C1 Average/Sec: |
4.57 |
|
C2 Average/Sec: |
0.0 |
Acceptable, but not perfect.

|
Brand: |
That's Write - Thanks to That's Write for providing
it. |
|
Manufacturer: |
Ritek (JS Dye) |
|
Code: |
97m15s17f |
|
Disc Type: |
CD-R |
|
Recording Layer: |
Dye Type 7: Short Strategy (Phthalocyanine) |
|
Capacity: |
79:59.70 (703MB) |
|
Certified Speed: |
48x |
|
Write Speed: |
32x |
|
Write Time: |
4m:00s |
|
C1 Average/Sec: |
6.83 |
|
C2 Average/Sec: |
0.95 |
Not good, the disc has a lot of C2 errors near the end, the
LTR-52246S slowed down the reading speed near the end as we could see on the
result.
|
Brand: |
Miflop Extreme - Thanks to Miflop for providing it |
|
Manufacturer: |
Taiyo Yuden |
|
Code: |
97m24s01f |
|
Disc Type: |
CD-R |
|
Recording Layer: |
Dye Type 1: Long Strategy (Cyanine or AZO) |
|
Capacity: |
79:59.72 (703MB) |
|
Certified Speed: |
48x |
|
Write Speed: |
32x |
|
Write Time: |
4m:00s |
|
C1 Average/Sec: |
3.66 |
|
C2 Average/Sec: |
0.0 |
Acceptable, but still far from the best we have seen with
TY.

|
Brand: |
Samsung |
|
Manufacturer: |
Prodisc |
|
Code: |
97m32s19f |
|
Disc Type: |
CD-R |
|
Recording Layer: |
Dye Type 9: Short Strategy (Phthalocyanine) |
|
Capacity: |
79:59.72 (703MB) |
|
Certified Speed: |
52x |
|
Write Speed: |
10x |
|
Write Time: |
9m:12s |
|
C1 Average/Sec: |
6.97 |
|
C2 Average/Sec: |
0.0 |
For a reason or another it would only write these prodisc
CD-R's at 10x, and the quality is nothing to shout hurray for either.

|
Brand: |
Samsung |
|
Manufacturer: |
Plasmon Data Systems, Ltd. |
|
Code: |
97m27s18f |