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VGA vs DVI

Forum Graphic & Displays : Graphics Cards - VGA vs DVI

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Bronze Graphics badge hunter315   07-07-2009 at 03:10:05 AM

Is there any difference in performance if you connect the monitor via a DVI cable instead of a VGA cable if both the GPU and the monitor have both connections available? Im curious if there is a performance loss related to the digital analog conversions required.

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daedalus685   07-07-2009 at 03:19:01 AM
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There is no difference in performance.

There may be a difference in quality depending on the quality of the A to D and D to A converter. But generally it isn't very large. That being said, DVI is considered to be superior.

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masteryoda34   07-07-2009 at 03:25:50 AM
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I would definitely take DVI over VGA when available, especially at higher resolutions. With VGA, I notice shimmering and scan lines in the image on my monitor. With DVI they disappear. Also, DVI has a chance of less input lag, since the monitor doesn't have to convert the analog image back to digital before displaying it.

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daedalus685   07-07-2009 at 03:31:56 AM
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The input lag is not of any consequence. But DVI is required for the highest resolutions.

 

Many low quality monitors have a bad D to A which reduces the quality, or causes lag. but it really isn't a big deal.

 

There is absolutely no reason to stay with vga in this day and age though, the extra plug and go features, and the compatibility make VGA pretty useless.

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Message edited by daedalus685 on 07-07-2009 at 03:34:11 AM
------------------------------ CPU: Q9550 at 3.6ghz (FSB 425mhz) | MB: P5E3 Premium | Ram: 4*2Gb Corsair DDR3 @1417mhz | GPU: 2 HD4890 1Gb (925core/1025mem) CF | PSU: OCZ ELiteXtreme 800W | Sound: Creative Titanium Fatal1ty Pro | 2*120gb OCZ Vertex SSD Raid0 and 2 500gb Raid0 HDDS
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gamerk316   07-07-2009 at 03:43:48 AM
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VGA still has some use, in particular, as the input you can use with console component cables (via component->VGA converter) for older consoles + the Wii. Other then that, theres really no reason to stick with an analog input.

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clementl   10-25-2009 at 06:33:33 PM
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daedalus685 wrote :

The input lag is not of any consequence. But DVI is required for the highest resolutions.

Many low quality monitors have a bad D to A which reduces the quality, or causes lag. but it really isn't a big deal.

There is absolutely no reason to stay with vga in this day and age though, the extra plug and go features, and the compatibility make VGA pretty useless.



Nope, VGA can still be used for high res, but will deliver a lower framerate.

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ridic23   10-25-2009 at 07:46:31 PM
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I definitely go for DVI....the vga is low quality once u have witnessed DVI.....HD videos flow smoothly over DVI and the colours are also more vibrant....

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