detail information
| Posted by | Paul Chilson |
| Posted on | 16/07/05 06:39 |
DVD+R Double Layer writing speed and compatibility:
The HP dvd640e DVD Writer supports the DVD+R9 DL standard for writing Double Layer discs with a size of 8.5 GB at a writing speed of 2.4x. Let us first take a look at the media's we will use:

Let's find the manufacturer and media information too, for this we will use DVD Identifier 3.6.2:
|
--------------------------------------------------------------------------- ** INFO : Hex Dump
Of 'Media Code'-Block Listed Below |
This media is manufactured by Mitsubishi Kagaku Media. Thanks to Verbatim USA for providing this media.
Testing procedure: We wrote a DVD ISO image in Nero 6 using the Disc-at-once writing method: Below are the results:

Verbatim media
The HP dvd640e DVD Writer used 45 minutes and 54 seconds for writing the Mitsubishi Kagaku media at 2.4x. Let us take a look at the K-Probe result:

|
Brand: |
Verbatim - (Thanks to Verbatim USA for providing this media) |
|
Manufacturer: |
Mitsubishi Kagaku Media |
|
Code: |
MKM 001 |
|
Disc Type: |
DVD+R DL |
|
Capacity: |
8103MB |
|
Certified Speed: |
2.4x |
|
Write Speed: |
2.4x |
|
Write Time: |
45m:54s |
|
PI-8 errors Average/Sec: |
3.30 |
|
PI-1 failures (PIF) Avg/Sec: |
0.14 |
The result is very good. Now it's time to take a look at some reading tests with various DVD-Writers.
First we will try to read the discs back in the HP dvd640e DVD Writer drive:

As we could see, the HP dvd640e DVD Writer had no problems reading the disc. Let us try some other drives to read the Double Layer discs:

The Plextor DVDR PX-712A shows no problems reading the disc.

Let's find the manufacturer and media information too, for this we will use DVD Identifier 3.6.2:
|
---------------------------------------------------------------------------
|
This media is manufactured by Ritek. Thanks to Advanced Media/Ritek USA for providing us with this media.
Testing procedure: We wrote a DVD ISO image in Nero 6 using the Disc-at-once writing method: Below are the results:

Ritek media
The HP dvd640e DVD Writer used 46 minutes and 07 seconds for writing the media at 2.4x. Let us take a look at the K-Probe result:

|
Brand: |
RiDATA - Thanks to Advanced Media/Ritek USA for providing |
|
Manufacturer: |
Ritek |
|
Code: |
RITEK D01 |
|
Disc Type: |
DVD+R DL |
|
Capacity: |
8152MB |
|
Certified Speed: |
2.4x |
|
Write Speed: |
2.4x |
|
Write Time: |
46m:07s |
|
PI-8 errors Average/Sec: |
11.77 |
|
PI-1 failures (PIF) Avg/Sec: |
0.96 |
The layer break causes problems. Now it's time to take a look at some reading tests with various DVD-Writers.

The HP dvd640e DVD Writer could not even begin to read it's own burn.

The Plextor PX-712A shows problems at the layer break but is able to finish the read.
Let's compare the HP dvd640e DVD Writer with other DL capable drives.
|
Drive |
Size |
Writing
|
Writing |
Book |
Kprobe |
Kprobe |
|
Philips |
8016 MB |
2.4x |
45m:05s |
DVD-ROM |
3.05 |
0.02 |
|
SONY |
8016 MB |
2.4x |
44m:37s |
DVD-ROM |
66.52 |
0.05 |
|
LaCie d2
|
8103 MB |
2.4x |
42m:44s |
DVD-ROM |
6.43 |
0.16 |
|
Philips |
8103 MB |
2.4x |
45m:59s |
DVD-ROM |
3.33 |
0.05* |
|
BenQ |
8151 MB |
2.4x |
45m:46s |
DVD-ROM |
3.21 |
0.02 |
|
Pioneer |
8152 MB |
4x |
27m:02a |
DVD-ROM |
2.42 |
0.11 |
|
Samsung |
8103 MB |
2.4x |
43m:46s |
DVD+DL |
8.26 |
0.01* |
|
Philips |
8103 MB |
2.4x |
44m:08s |
DVD-ROM |
3.31 |
0.01* |
|
AOpen |
8103 MB |
2.4x |
44m:01s |
DVD-ROM |
4.12 |
0.12 |
|
Mad
Dog |
8131 MB |
4x |
26m:44s |
DVD-ROM |
2.74 |
0.12 |
|
LG |
8103 MB |
4x |
26m:55s |
DVD-ROM |
1.81 |
0.01 |
|
Lite-On |
8152 MB |
4x |
27m:09s |
DVD-ROM |
2.61 |
0.15 |
|
LG |
8103 MB |
2.4x |
44m:25s |
DVD-ROM |
2.19 |
0.04 |
|
ASUS |
8131 MB |
4x |
26m:58s |
DVD-ROM |
3.29 |
0.18 |
|
Samsung |
8103MB |
6x |
23m:30s |
DVD+DL |
11.58 |
0.03* |
|
HP
dvd640e |
8124 MB |
2.4x |
26m:46s |
DVD-ROM |
3.30 |
0.14* |
|
* Verbatim DVD+R9 DL |
|
** Philips DVD+R9 DL |
|
*** Traxdata DVD+R9 DL |
|
**** Ritek DVD+R9 DL |
Standalone DVD-Player compatibility:
The DVD+R9 DL media (Book Type: DVD-ROM) was tested for playback compatibility on the following players:
⋅ Pioneer DV-656A
⋅ SONY Playstation 2
Compatibility results:
Both devices played the HP dvd640e DVD Writer burned DVD+R9 DL media without problem.
Summary: Very good quality on the Verbatim DL media but the RiDATA media showed high PIF errors on the second layer and playback suffered because of it.
Now that we have examined some of the writing features, let's take a look at another one. The LightScribe feature/Technique…..


DVD-R/RW Writing performance
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