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If I understand your question, it would be 1X or 150 k/sec for playback of songs.
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If I understand your question, it would be 1X or 150 k/sec for playback of songs.

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It is 1x CD-ROM. My doubt is what is the data rated needed by a 24x CD-ROM device to read a 1x CD-ROM. Is it just 1x of 24x? I read several articles online, and some of them express data rate in bits/sec. Why is that? 
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It is 1x CD-ROM. My doubt is what is the data rated needed by a 24x CD-ROM device to read a 1x CD-ROM. Is it just 1x of 24x? I read several articles online, and some of them express data rate in bits/sec. Why is that?

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All right, I got it. Thank youu. 
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I wonder what is the data rate required for a 24x CD-ROM driver to run a 640 MB that can run mp3s for 74 min? 
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I wonder what is the data rate required for a 24x CD-ROM driver to run a 640 MB that can run mp3s for 74 min? 

CD ROM data rate

Computer data storage, often called storage or memory, is a technology consisting of computer components and recording media used to retain digital data. In addition to local storage devices like CD and DVD readers, hard drives and flash drives, solid state drives can hold enormous amounts of data in a very small device. Cloud services and other new forms of remote storage also add to the capacity of devices and their ability to access more data without building additional data storage into a device.