I recently read that the only difference between DVI and VGA is that DVI is digital whereas VGA is an analog signal. This means it might gain noise along the way or if the cable is cheap. I currently convert from DVI (the only output my GPU gives) to VGA directly out of the GPU, and then pass the signal to my two screens through a VGA cable. The cable itself is not too long, but the screens are big and that might cause some trouble. Would it be wiser to use DVI cables and converting to VGA (the only input my monitors can take) right before the monitor?
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Does it look okay? Then don't bother changing anything.– ShinraiCommented Sep 27, 2011 at 18:30
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3Your not converting the signal in any configuration. The DVI connector on your GPU includes the ability to output an analog signal and does so when you connect to a VGA monitor.– BrianCommented Sep 27, 2011 at 18:44
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@Shinrai I can't really tell since this is how it's always been.– kettlepotCommented Sep 27, 2011 at 18:51
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@Brian Are you sure? I've used 2 converters which connect to the DVI out and have a connector for a VGA cable.– kettlepotCommented Sep 27, 2011 at 18:52
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1@GabrieleCirulli - What's he's saying is that most DVI already carries an analog VGA signal in addition to the digital one, it doesn't have to be converted. This is not ALWAYS the case but ALMOST always the case. This is why the converters (really just adapters) are small and don't require external power. Your adapters could POTENTIALLY introduce a signal strength issue but it's incredibly unlikely; hence my initial comment. You're very unlikely to see a difference.– ShinraiCommented Sep 27, 2011 at 19:24
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1 Answer
Would it be wiser to use DVI cables and converting to VGA (the only input my monitors can take) right before the monitor?
You're not really converting anything with this setup. That little adapter you're using to "convert" DVI to VGA only pulls VGA pins that are already within your DVI port out. According to this, you're using a DVI-I connector from your video card.
Since your monitors only take a VGA signal, you don't really have options here. Unless you wanted to find some horrible device to convert a DVI-D (actually digital) to Analog for you between your video card and your monitor. Hint: That'll suck, the video card doing the conversion is as good as it gets.
The only thing you can do to improve the quality from this point is find better cables (and shorter). But, if it looks good, then you don't need to spend any more time on this.
answered Sep 27, 2011 at 20:20
