Monitors Control Panel and "Hidden" Resolutions (5/96)

I was told that my Macintosh Quadra 800 computer supports 800x600 video resolution. I know my monitor also supports this resolution, but I cannot see an option for 800x600 in the Monitors control panel. Is there something I can do to use this resolution?
800x600 is not a Macintosh resolution. However, some Macintosh computers can support this resolution when used with the appropriate monitor. Unfotunately, computers using System 7.5.1 and higher do not support non-Macintosh "hidden" resolutions, such as 800x600 and 640x400.

If your computer and monitor can both support the non-Macintosh resolution you are looking for, and you do not have System 7.5.1 or higher, you may be able to use the following procedure to select a non-Macintosh resolution.

Step 1
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Choose Control Panels from the Apple Menu.

Step 2
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Open the Monitors control panel.

Step 3
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Hold down the Option key while clicking the 'Options' button in the Monitor control panel.

Step 3
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Choose the desired resolution, then click OK.
Published Date: Feb 18, 2012