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DVD+R9 DL Writing performance
DVD+R Double Layer writing speed and compatibility:
The Memorex DVD+/-DL4RWlD2 supports the DVD+R9 DL standard for writing Double Layer discs with a size of 8.5 GB at a writing speed of 4x.

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 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:

Verbatim media
The Memorex DVD+/-DL4RWlD2 used 26 minutes and 46 seconds for writing the media at 4x. Let us take a look at the K-Probe result:

| Brand: | Verbatim ‘“ Thanks to Verbatim (D) for providing the sample. |
| Manufacturer: | Mitsubishi Kagaku Media |
| Code: | MKM 001 |
| Disc Type: | DVD+R DL |
| Capacity: | 8152MB |
| Certified Speed: | 2.4x |
| Write Speed: | 4x |
| Write Time: | 26m:46s |
| PI-8 errors Average/Sec: | 1.96 |
| PI-1 failures (PIF) Avg/Sec: | 0.05 |
The result is very good. Now it’s time to take a look at some reading tests with various DVD-Writers.


Both the Memorex DVD+/-DL4RWlD2 and the Plextor PX-712A show perfect reading curves.

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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 Memorex DVD+/-DL4RWlD2 used 26 minutes and 46 seconds for writing the media at 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: | 4x |
| Write Time: | 26m:46s |
| PI-8 errors Average/Sec: | 15.69 |
| PI-1 failures (PIF) Avg/Sec: | 0.80 |
The layer break causes problems. Now it’s time to take a look at some reading tests with various DVD-Writers.


The Memorex DVD+/-DL4RWlD2 reading at maximum of 6x has no problem but the Plextor PX-712A reading at up to 12x shows problems at the layer break but is able to finish.
Let’s compare the Memorex DVD+/-DL4RWlD2 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* |
| Memorex | 8103 MB | 2.4x | 26m:46s | DVD-ROM | 1.96 | 0.05* |
| * 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
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SONY Playstation 2
Compatibility results:
Both devices played the Memorex DVD+/-DL4RWlD2 burned DVD+R9 DL media without problem.
Summary: Very good quality on the Verbatim DL media. Good quality on the Ritek DL media.
Before we wrap up this review, let us run the drive through some advanced tests on the next page…
