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      07-03-2008, 05:26 PM   #165
alcook
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Quote:
Originally Posted by G33 View Post
does te 2.4x max burn speed make any difference to reading speed?
There's no links between burn and read speeds.

I'm not sure of the technical specs, manufacturer and therefore overall quality & ability of BM's CD & DVD readers, but very roughly: Disks are burned by a laser which turns on and off to place 'pits' onto the disc. As you increase the burn speed, then the rate at which the laser can turn on and off must also be increased. At the higher end of the speed scale it's possible that instead of clean sharp pits, you might end up with gradual slopes on the edges. When a reader later scans these sloped pits the reader may have a harder time distinguishing what's a 1 or 0. Errors will be produced and therefore it will have to go back and re-read that track.

I'm aware of tests using an electron microscope to compare DVDs burned at high and low speeds. The one burned at high-speed had pits that were somewhat "blurred". of course this is all dependent upon the particular burner and disk quality, as burning at 2x on a poor device will be worse than 4x or higher on a good device.

But rule of thumb would be to burn at slower speeds to reduce errors.
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