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If you do not find your question, please contact Verbatim Support direct at supportcentre@verbatim-europe.com.

How do you comment the fact that some DVD recorder manufacturers overspeed some of your media?

In general we recommend using the media indicated speed or one speed generation less, e.g. use 8X – 16X for 16X media or 4X – 8X for 8X media. There are media specifications, but no drive specifications. Drive manufacturers can do what they want, provided the recorded disc complies with the specifications for recorded media. Media specifications control for example the mechanical characteristics. 16X media has tighter specifications for Focus Error and Tracking Error than 8X media which is necessary when speeding at 16X = 10,000rpm (equivalent to 200km/h at the outer edge of the disc!). 20X recording induces approx. 11,500 rpm to the media. Already 16X is near the physical limits for DVD technology.
However, some test results indicate that some hardware manufacturers optimize their writing strategies NOT for the specified speed, but for higher speed already, e.g. 4X rather than 2.4X for Double Layer media.
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