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DVI vs Analog

A

aviwil

Senior member
What difference does it make , if any , if the LCD monitor , is connected to the DVI interface on the graphics card , or to the Analog ( D-Sub ) connector ?
 
Back when I had a 19" PVA 5:4 LCD (now with my parents), I couldn't see any difference between DVI and VGA on it. But it was a high quality Fujitsu-Siemens screen (P19-2 was the model I believe).

When I got a 22" Samsung (a mainstream aka "cheapo" TN monitor) that had a 1680x1050 resolution a few years back, the difference between VGA and DVI was night and day. The screen was unusable through VGA actually.

DVI is digital transmission with no signal conversion losses. VGA is analog (so actually digital -> analog -> digital). Depending on the monitor quality (and the VGA output quality too), you may get very bad results due to signal conversion, especially in the high resolution screens.
 
Qbah said:
Back when I had a 19" PVA 5:4 LCD (now with my parents), I couldn't see any difference between DVI and VGA on it. But it was a high quality Fujitsu-Siemens screen (P19-2 was the model I believe).

When I got a 22" Samsung (a mainstream aka "cheapo" TN monitor) that had a 1680x1050 resolution a few years back, the difference between VGA and DVI was night and day. The screen was unusable through VGA actually.

DVI is digital transmission with no signal conversion losses. VGA is analog (so actually digital -> analog -> digital). Depending on the monitor quality (and the VGA output quality too), you may get very bad results due to signal conversion, especially in the high resolution screens.
Click to expand...

it also has to do with resolution and quality of VGA cable. anything over 1280x1024 won't look good on VGA, and samsung puts very cheap VGA cables.
 
depends on the Monitor. On my Benq's(E2200HD and E2400HD) both look very noticably better through DVI or HDMI than VGA.

My 32" Sony Bravia LCD TV on the other hand looks way better through VGA than a DVI to HDMI cable, i dont know why but text looks fuzzy and faded through DVI--> HDMI but when i hook it up straight VGA its crystal clear, have no clue why.
 
Rifterut said:
depends on the Monitor. On my Benq's(E2200HD and E2400HD) both look very noticably better through DVI or HDMI than VGA.

My 32" Sony Bravia LCD TV on the other hand looks way better through VGA than a DVI to HDMI cable, i dont know why but text looks fuzzy and faded through DVI--> HDMI but when i hook it up straight VGA its crystal clear, have no clue why.
Click to expand...

It is because VGA enables special "PC mode" that does some fancy filtering of signal. Same can be accomplished with HDMI, as long as you set your connection to be PC and TV has that feature.
 
DVI = digital signal goes directly to display
Analog VGA = signal gets converted from digital to analog in video card, then reversed in display.

No conversion is always better.
 
The fonts are horrible with VGA all corrupt and what not. That is why you use DVI.

Pictures in VGA are ok, but not fonts. DVI gives the clean fonts cleant resolution and clean picture... thx
 
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