Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I work on different types of monitors (CRT, LCD) and all PCs have the same screen refresh rate as 60 Hertz. Recently I've read an article which claims that low refresh rates cause headaches. The writer states that 60 Hertz is a low refresh rate and should be increased to the maximum value that the monitor supports. If I increase this value to the maximum as the monitor can display (for example 75 Hertz), does it damage the monitor in the long term? Answers about the pros and cons of low & high refresh rates would be highly appreciated.

share|improve this question
    
this may be of interest to you superuser.com/questions/30201/… –  Revolter Dec 9 '09 at 15:32

4 Answers 4

up vote 12 down vote accepted

Low refresh rates are only problematic on CRTs (where they cause flickering), not on LCDs.

Because of this, most LCDs only support a single fixed refresh rates, usually 60 or 75Hz. I don't think you could break one by trying to set it higher; it would simply refuse to work or ignore the setting.

With CRTs, there is a potential for damage if you exceed the maximal refresh rate the hardware supports, but modern CRTs support very high rates (usually at least 100Hz) and probably also have safeguards to protect against misconfiguration.

share|improve this answer
3  
In the distant past it was possible to damage a CRT by incorrectly setting the refresh rate out of bounds for the monitor. Modern monitors (made within the last ~10 years) will refuse to operate at a rate that could hurt them. I recommend setting the rate of CRTs as high as you can to avoid eye strain. As noted below if you have two or more monitors next to each other set them at the highest common rate. LCDs don't have the same flicker issue so a slow refresh rate is not a problem for eyestrain (but may affect graphics performance.) –  Chris Nava Dec 9 '09 at 16:35

Read the specification of your monitor, don't go past that (It may not even work if you go past it!) and you shouldn't break your monitor... I wouldn't exceed or go past whatever the specification says.

share|improve this answer

No risk.
If the monitor supports higher refresh rates then by all means try them. Not everyone thinks higher is better, I'm quite comfortable at 60Hz even though my monitors supports 75Hz.

One thing though. If you have a more than one monitor on your desk make sure they have the same refresh rate. If they don't I can almost guarantee that you'll get a headache.

share|improve this answer

The concept of refresh rate, is applicable only to CRT, as the refresh rate is an indication of how many times per second the electron beam scans and draws the data. The higher the refresh rate, more number of times the beam is drawn. I can clearly make out the "flicker" at a refresh rate of 60Hz, and it indeed causes severe headache and eyestrain. It's recommended that you set it to as high as your monitor allows, if not atleast 72/75Hz.

As for damaging the monitor, most newer monitors simply will refuse to operate if set at a refresh rate beyond the capability, you will get an error message like Sync out of range.

share|improve this answer
    
"The concept of refresh rate, is applicable only to CRT." This should have been accepted as the solution because Sathya was the only poster who didn't make the amateurish mistake of saying LCDs have a refresh rate. –  Austin ''Danger'' Powers Mar 1 '13 at 12:28

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.