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Old April 7, 2009, 08:28 PM
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Default refresh rate question

didn't know if I should be posting this here or video card section exscuse me if I messed up. Anyway my question is this I noticed in my nvidia control panel I could only get a refresh rate of 60hz. my sony lcd has a refresh rate of 120hz. I tried to use the customize with no luck. I get a failed error. But I also get a failed error at the 60htz.Just curious. Thanks for reading.

Last edited by tcos; April 8, 2009 at 05:39 AM.
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Old April 7, 2009, 08:32 PM
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REFRESH RATE does not apply to LCD monitors

They use RESPONSE TIME

And are locked at 60hz which means you will only get 60fps while the rest are dropped.
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Old April 7, 2009, 08:38 PM
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From what I understand 120Hz TV's are able to use 24fps (refreshed 5 times to make 120hz). I don't know much more than that but I hope it gives you something to go on. I'm assuming there is something more to it that I'm unaware of since IMO 24fps seems piss poor.
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Old April 8, 2009, 05:55 AM
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The 120hz on TVs IS NOT true 120Hz. The LCD TVs that are advertising 120Hz are actually using interpolation (inserting a signle frame between two actual frames) to achieve 120Hz. Therefore, the input refresh rate stays at 60Hz but the TV converts it.
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Old April 8, 2009, 06:03 AM
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unless it's a blu-ray of course :D
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Old April 8, 2009, 06:28 AM
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The source material has nothing to do with it in this case. Current HDMI standards just don't have the bandwidth to transmit a true 120Hz signal. HDMI 1.3 should have enough bandwidth but that is still some time away.
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Old April 8, 2009, 06:38 AM
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ummm, HDMI 1.3a is already out. My projector and receiver are both HDMI 1.3
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Old April 8, 2009, 07:07 AM
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Quote:
Originally Posted by lcdguy View Post
ummm, HDMI 1.3a is already out. My projector and receiver are both HDMI 1.3
Sorry, I think I need to clarify.

The issue is that all of the "120hz" TVs being sold now in the sub-$2000 category lack the proper technology needed for true 120Hz operation. Supposedly actual 120Hz 32"+ panels are still about a year away.
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Old April 8, 2009, 09:59 AM
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so basically you get what you pay for then
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Old April 8, 2009, 10:15 AM
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Yes and no. I can spend $4000 on and LCD TV and it still won't display a true 120Hz picture.
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