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How does length of the VGA or HDMI cable affect the quality

Last response: in Graphics & Displays
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December 4, 2012 8:16:33 PM

How does a, lets say, 5 meter cable affect the quality of the image?
a c 291 U Graphics card
December 4, 2012 8:18:33 PM

5 meter is nothing. You should be worried at 20 meters, though.

HDMI will just not show if the signal is not strong enough. VGA will start having artifacts.
a b U Graphics card
December 4, 2012 8:19:47 PM

They sell "repeaters" now that you can place in between 2 high length cables to extend the range of the signal, I have a ViewHD brand box at home I use.
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December 4, 2012 8:27:46 PM

Are repeaters necessary for 5meters ?
December 4, 2012 8:28:40 PM

Should have asked about DVI not VGA...
a c 291 U Graphics card
December 4, 2012 8:32:22 PM

Basically, if they manufacture a cable, it will work. No matter the length. They wouldn't make them if they didn't work.

DVI is same as HDMI. It will either work or not. The signal quality does not degrade. It just stops working.
December 4, 2012 8:33:53 PM

Thank you.
a b U Graphics card
December 4, 2012 8:39:27 PM

Well, technically he is right, they aren't likely to manufacture a cable that the signal quality would degrade on, but you can certainly buy the HDMI cable material and create your own, but yes, they probably won't sell in store a pre-made cable that is too long to keep the signal.
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