Member Avatar for crab

hi,
my monitor is 17" viewsonic G73fm. i saw its specs on the net which said that it supports 100hz at 10/7 res. a friend of mine told me that its unsafe to operate at 100hz. what could possibly go wrong?

thanks

kind regards
omw

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  • Latest Post Latest Post by kc0arf

Dani AI

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Short answer: if the monitor actually lists that refresh/resolution combination as a supported mode, running it is fine. If the mode is not listed by the manufacturer (or the monitor refuses the mode), do not force it.

How to verify and test safely:

  • Check the monitor’s OSD or printed/manual specifications for supported vertical and horizontal scan ranges. The EDID reported by the monitor is the definitive list of supported modes.
  • On modern systems: use the OS display settings or a tool that reads EDID. On Linux run xrandr to see supported modes; on Windows use the adapter/monitor properties (or “List All Modes”) to choose only reported modes.
  • If you create a custom mode, ensure the horizontal scan frequency it implies does not exceed the monitor’s rated horizontal kHz. Exceeding the rated scan rates is what causes “out of range” behavior or stress to the electronics.

What can go wrong when out of spec:

  • Temporary: jitter, image collapse, “out of range” blank screen, or audible whining. These are warning signs — stop and revert to a supported mode.
  • Longer term: repeated operation outside specs can overheat or stress power supply/deflection components on CRTs or damage driver electronics. LCDs usually just refuse unsupported timings or show artifacts.
  • If the screen goes blank after changing settings, boot into safe/VGA mode to restore a safe resolution and refresh rate.

Practical notes: follow the manufacturer’s recommendations and use the monitor driver/EDID-reported modes. The advice from about checking the manual is sound. Keep hijacking and unrelated questions in separate threads as pointed out. For background reading on timing and refresh concepts see Refresh rate.

Recommended Answers

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Member Avatar for Coconut Monkey

You are stressing the monitor more by running it at a higher refresh rate, but if it's a supported rate at that particular resolution (see manual) then I wouldn't worry too much. If you're paranoid then just stick with 85Hz which still produces a nice solid image.

Member Avatar for zalakes

I want my diplay to show on both the tv and monitor from 1 graphics card and onboard card is this possible.............?

Member Avatar for Coconut Monkey

I want my diplay to show on both the tv and monitor from 1 graphics card and onboard card is this possible.............?

See my article on the subject.

Member Avatar for kc0arf

,

Please do not hijack threads. If you have a question, please post your own, otherwise the topics get too confusing, and it is rude to the original person who asked the first question.

Thank you.

Christian

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