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Is it important to use a screen saver?
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The quick answer is: it is not as important as it once was with
fixed format text displays. I still recommend using a screen saver
as cheap insurance if it uses mostly dark colors or black. In this
case, your power dissipation and heating will be slightly reduced
as well. However, even completely blanking the screen with the video
signal does not significantly prolong the life of the CRT. (See the
section on Monitor Life.)
The best solution is to use a 'Green', monitor in its
full power down mode. This saves energy and wear and tear on the
CRT and other monitor components. Most newer PC BIOS's now support
energy saving modes in the CMOS setup. These should be used but
only if your monitor specifies that it supports the relevant energy
saving modes. Otherwise, you could damage the monitor.
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