ForumBenQ DW1800 detail information
| Posted by | agent009 |
| Posted on | 26/06/07 05:09 |
| Number of views | 31402 |
| Manufacturer | BenQ |
| Product | BenQ DW1800 |
| Description | 18x DVD burner |
DVD+R writing quality
In DVD writing tests below, we will use Nero CD-DVD Speed to write DVDs at the maximum speed supported by BenQ DW1800.
We will use Nero CD-DVD Speed to write DVDs at the maximum speed supported by BenQ DW1800.
We will then test their quality using a Lite-On SHM-165P6S drive and KProbe 2, a software tool developed by a Lite-On employee. Quality scans will be conducted at the scanning speed of 4x, our standard speed for Lite-On DVD scanning. (Note that different scanning drives and speeds may dramatically alter results obtained in quality tests.)
In DVD quality tests, the testing drive reports two types of errors: PI (Parity Inner) errors (PIE) and PI failures (PIF).
In practice, a pressed or recorded DVD will always have some PI errors and PI failures. PI errors are easily corrected by the drive's error correcting decoder.
PI failures are the next level of errors. While PI failures are corrected by the second and last stage of the error correcting decoder, they are a more dangerous kind of errors because they can overwhelm the error correcting decoder if they occur in large enough numbers. A good-quality DVD should not contain PI errors above 280 or PI failures above 4.
Beyond PI failures, there are PO (Parity Outer) failures that are uncorrectable and make a disc unreadable.
To see if there is a connection between the reported amount of errors and the readability of discs we will include reading curves from Nero CD-DVD Speed transfer rate tests performed on a Lite-On SHM-165P6S drive. We will be looking for any drops in transfer rates which would indicate readability issues with the discs created by BenQ DW1800.
In the tests below, we will explore DVD+R writing speed and quality of BenQ DW1800 with media from several manufacturers.
Verbatim 16x DVD+R
Verbatim 16x DVD+R
(Thanks to Verbatim USA for providing this media)
Quality test
Transfer rate test
This high-quality media should have been a primary candidate for 18x overspeeding, and the quality of this test burn shows that it has, in all likelihood, a significant margin of safety that would allow to burn faster than 16x.
Still, it is hard to argue with a nearly perfect 16x burn.
Sony 16x DVD+R
Sony 16x DVD+R
Quality test
Transfer rate test
One of the few media codes this drive is set up to overspeed out of box, SONY D21 shows an excellent result at 18x.
Taiyo Yuden 16x DVD+R
Taiyo Yuden 16x DVD+R
(Thanks to Rima.com for providing this media)
Quality test
Transfer rate test
Another excellent result at 18x, as expected from Taiyo Yuden media.
Maxell 16x DVD+R
Maxell 16x DVD+R
(Thanks to Maxell USA for providing this media)
Quality test
Transfer rate test
An excellent burn that should have no difficulties during reading.
Memorex 16x DVD+R
Memorex 16x DVD+R
(Thanks to Memorex USA for providing this media)
Quality test
Transfer rate test
A pretty good burn, with a peculiar but harmless cluster of PI errors toward the end of the disc.
Imation 16x DVD+R
Imation 16x DVD+R
Quality test
Transfer rate test
OPTODISC R16 is explicitly restricted to 6x in BenQ DW1800 firmware. This is surprising, given than this media burns very, very well at 16x in other drives.
Nevertheless, the 6x burn results in excellent quality, if you don't mind waiting a few extra minutes for it to complete.
Ridata 16x DVD+R
Ridata 16x DVD+R
(Thanks to Ritek USA | Advanced Media, Inc. for providing this media)
Quality test
Transfer rate test
An outstanding burn that compares favorably to another RICOHJPN R03 burn above.
Fujifilm 16x DVD+R
Fujifilm 16x DVD+R
Quality test
Transfer rate test
Extremely low PIF numbers indicate an excellent-quality disc.
Verbatim 8x DVD+R
Verbatim 8x DVD+R
Quality test
Transfer rate test
A wonderfully clean burn on old, now discontinued 8x media.
ESA 8x DVD+R
ESA 8x DVD+R
Quality test
Transfer rate test
A great burn on cheap but good media sold in the U.S. by Circuit City.
Fujifilm 8x DVD+R
Fujifilm 8x DVD+R
Quality test
Transfer rate test
An excellent result that we have come to expect from Taiyo Yuden media.
Maxell 8x DVD+R
Maxell 8x DVD+R
Quality test
Transfer rate test
Slightly elevated PIF levels, typical of MAXELL 002 media. A great burn.
Summary
BenQ DW1800 is an excellent DVD+R writer, producing consistently solid results with all media we tested.
DVD+RW writing quality
In the tests below, we will explore DVD+RW writing speed and quality of BenQ DW1800 with media from several manufacturers.
Verbatim 4x DVD+RW
Verbatim 4x DVD+RW
(Thanks to Verbatim USA for providing this media)
Quality test
Transfer rate test
The number of PI failures is surprisingly large but is consistent with how other drives burned this batch of discs.
PI failures are evenly distributed across the disc, and the transfer rate test is perfectly smooth, making this burn acceptable.
Memorex 8x DVD+RW
Memorex 8x DVD+RW
(Thanks to Memorex USA for providing this media)
Quality test
Transfer rate test
This is a great burn for a DVD+RW disc, indicating a good match of BenQ DW1800's writing strategy to the media.
Ridata 8x DVD+RW
Ridata 8x DVD+RW
(Thanks to Ritek USA | Advanced Media, Inc. for providing this media)
Quality test
Transfer rate test
Another very good high-speed DVD+RW burn.
Memorex 4x DVD+RW
Memorex 4x DVD+RW
(Thanks to Memorex USA for providing this media)
Quality test
Transfer rate test
Another good burn.
Maxell 4x DVD+RW
Maxell 4x DVD+RW
(Thanks to Maxell USA for providing this media)
Quality test
Transfer rate test
Slightly elevated PI failires but nothing out of the ordinary for a DVD+RW disc. A good burn of a widely used DVD+RW type.
Summary
BenQ DW1800 is a good DVD+RW writer, capable of excellent burns with the right media.
CD-R and CD-RW writing quality
This is due to a rarely noticed SHM-165P6S behavior.
It reads 8x DVD+R and DVD-R media at 12x CAV.
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