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| Posted by | Wesley Novack |
| Posted on | 31/12/04 07:38 |
| Number of views | 9310 |
DVD+R Double Layer writing speed and compatibility:
The Memorex F16 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.
Testing procedure:
We wrote a DVD ISO image in Nero 6 using the Disc-at-once writing method:

Verbatim 2.4x DVD+R9 Double layer, written at 2.4x. Total writing time is 43 minutes and 48 seconds.

RiDATA 2.4x DVD+R9 Double layer, written at 2.4x. Total writing time is 43 minutes and 46 seconds.
Testing results:




| Brand: | Verbatim - (Thanks to Verbatim USA for providing this media) |
| Manufacturer: | Mitsubishi (Singapore) |
| Code: | MKM 001 |
| Disc Type: | DVD+R DL |
| Capacity: | 8152MB |
| Certified Speed: | 2.4x |
| Write Speed: | 2.4x |
| Write Time: | 43m:48s |
| PI-8 errors Average/Sec: | 2.82 |
| PI-1 failures (PIF) Avg/Sec: | 0.03 |
Very good results! This is an excellent quality DL burn that was perfectly readable. Highly recommended.




| 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: | 43m:38s |
| PI-8 errors Average/Sec: | 10.33 |
| PI-1 failures (PIF) Avg/Sec: | 0.60 |
The RiDATA DVD+R9 DL disc showed some PIF spikes that were a little too high. We can also see that the resulting disc had some problems in the reading test performed on the Mad Dog DVD writer, but at least the disc is fully readable. These DL discs should be adequate for use with the Memorex drive, but you will get better results with Verbatim brand DL discs.
Here are the comparison results obtained with Verbatim DVD+R DL discs, measured against other 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 | 0.06 |
| BenQ | 8151 MB | 2.4x | 45m:46s | DVD-ROM | 3.21 | 0.02 |
| Pioneer | 8152Mb | 4x | 27m:02s | DVD-ROM | 2.42 | 0.11 |
| Samsung | 8103 MB | 2.4x | 43m:46s | DVD+DL | 8.26 | 0.01 |
| Mad Dog | 8131 MB | 4x | 26m:44s | DVD-ROM | 2.74 | 0.12 |
| Memorex | 8131 MB | 2.4x | 43m:48s | DVD-ROM | 2.82 | 0.03 |
Both the Verbatim and the Ritek DVD+R9 DL discs written by the Memorex F16 were tested in our standalone players. Players that we tested on include the Philips DVP642, Koss KD365 and Toshiba SD-2300. The Memorex F16 burns DVD+R DL discs with a DVD-ROM booktype by default, which is a positive and helps to improve compatibility with standalone players. We ran into a problem with the Ritek DVD+R9 DL disc when testing on the Toshiba SSD-2300, the player would not recognize the Ritek DL disc, but it had no problems playing the Verbatim DL disc.
Summary: The Memorex F16 is an ok choice for DVD+R9 DL writing and will produce reliable quality Verbatim DL discs. However, the competition can write DVD+R9 DL discs at 4x speed (almost twice as fast as the Memorex F16) and can perform better when writing to Ritek DL discs.

1. When writing to 8X rated media using the latest Nero, the only chice is 44x and it actually writes at 44X. The disks sem ok, but I cannot select any other speed.
2. The drive is NOT sypported by CDRWIN...I've writen them twice, but no feedback and idea if/when it may be sipported.
3. It would REALLY be nice, if Memorex updated (via their website) firmware more often...I assume that as liyeon's 1633 drive is updated, it shouldn't be much of a problem that memorex follows along...but...so far NO






You should try upgrading Nero to the latest version to see if it solves your issue #1.

DVD-R/RW Writing Performance
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