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> George wrote
> I can test an old clunker CD-ROM, and end up with
> very good results. Then when I test a quality, more
> expensive CD-ROM (such as, for example, a
> Plextor 40x, 48x, etc.) then the results are really
> poor. Any idea why this happens?
The CD results are very dependant on the disc being used.
We recommend either buying our discs (of course)
http://www.passmark.com/products/testcddvd.htm
or making a standard test disc with our CD-Maker utility
http://www.passmark.com/products/cdmaker.htm
Use the advanced CD test, with the RAW option over a long duration (at least a minute), then examine the graph to get the most interesting results. Some drives are slow to start and / or slow to reach their top speed. Also, make sure the drive is not already spinning when you start the tests to make it a fair test.
David
PassMark
> I can test an old clunker CD-ROM, and end up with
> very good results. Then when I test a quality, more
> expensive CD-ROM (such as, for example, a
> Plextor 40x, 48x, etc.) then the results are really
> poor. Any idea why this happens?
The CD results are very dependant on the disc being used.
We recommend either buying our discs (of course)
http://www.passmark.com/products/testcddvd.htm
or making a standard test disc with our CD-Maker utility
http://www.passmark.com/products/cdmaker.htm
Use the advanced CD test, with the RAW option over a long duration (at least a minute), then examine the graph to get the most interesting results. Some drives are slow to start and / or slow to reach their top speed. Also, make sure the drive is not already spinning when you start the tests to make it a fair test.
David
PassMark