[ The PC Guide | Systems and Components Reference Guide | Motherboard and System Devices | System Cache
| "Layers" of Cache ]
Much like the hard disk, other devices can be cached using the system RAM as well.
CD-ROMs are the most common device cached other than hard disks, particularly due to their
very slow initial access time, measured in the tens
to hundreds of milliseconds (which is an eternity to a computer). In fact, in some cases
CD-ROM drives are cached to the hard disk, since the hard disk, despite its slow speed, is
still much faster than a CD-ROM drive is.
Next: Function and
Operation of the System Cache
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