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DVI vs HDMI Refresh Rate

post #1 of 6
Thread Starter 
I figured this is the best place to put this since it all originates from the GFX card...Anyways so I saw a lot of DVI vs HDMI threads addressing the quality of aspect and sound, but does anyone know about the refresh rate? Because I'm originally coming from a DVI output (gfx card) does that mean that no matter what I'm limited to a 60hz refresh rate even if I use analog (VGA) or does my refresh rate options change when under VGA?

Also because HDMI is also a digital signal if I use that to go into my monitor will I still be limited to 60hz Refresh Rate (is it something thats limited to digital signal?) or is it something that is only limited to DVI itself (since HDMI is supposedly just improved DVI)? If everything is originally coming from a DVI Port and DVI is limited to 60hz, from your card wouldn't that mean that refresh rates aren't really changeable no matter what you plug into your DVI port? Or is it at the monitors end (receiving the signal) that's limited? When using VGA It says I can supposedly change the refresh rate to a higher setting and I remember old CRT monitors had really high refresh rates, but is it really updating?

Is it something that's handled at the monitors input and not the GFX's output? This is what I don't understand which one is the limiting factor here? Now stemming back to the original question is there a refresh limit on HDMI like there is on DVI? Say I was to use the HDMI outs instead of the HDMI dongle would it make a difference then?
Edited by dekciW - 1/25/12 at 4:29pm
     
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post #2 of 6
As far as I know, refresh rate is limited by the displaying device, call it a TV, monitor, etc. Windows 7 showing 59 and 60hz under refreshing rate for example, is just a native way of windows handling it.

Regardless of the kind of adapter, VGA,hdmi, etc, you need a device that supports the output signal, hence why you see 120hz and 240hz TV more expensive than regular TVs, or why not all monitors are able to show 3D even if you have an NVIDIA gpu.
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post #3 of 6
Thread Starter 
I know this, but I remember reading a while back that DVI in itself when hooked up from a Computer to a Monitor is limited to 60hz even if the monitor is capable of a higher refresh rate.
     
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post #4 of 6
http://en.wikipedia.org/wiki/Digital_Visual_Interface#Digital

Single Link DVI is maxed at 60Hz at 1920x1080
Dual Link is maxed at 85hz at same res.

So if youre doing 1080p on a 120hz monitor, best be using HDMI!
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post #5 of 6
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+rep exactly what I needed to know thank you good sir.
     
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post #6 of 6
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