View Full Version : DVI vs VGA

10-10-05, 10:57 AM
Can I expect a big difference changing from a VGA to a DVI monitor (LCD)?
Got a Neovo F-17, waiting for a Samsung SM 930BF 19" 4ms..

10-10-05, 11:25 AM
I think Dvi is limited to 60Hz at 1280*1024. Well it is for me. Can anyone else confirm this?

10-10-05, 11:30 AM
The reason you have 60Hz is because you have an LCD monitor. LCD's do not have refresh rates like CRT's. So it doesn't matter.

As for DVI vs. VGA, DVI is just a digital interface. So you will get slightly better picture quality, and automatic screen adjustment is set up for you.

10-10-05, 11:32 AM
Cables come in two classes. Single link cables support bandwidth of 165 MHz or 165 million pixels per second. Dual link can support a bandwidth of 330 MHz. To calculate your bandwidth multiply your horizontal resolution by your vertical resolution by your refresh rate. For example, a standard XGA (1024x768) display would have a refresh rate of 60 Hz. 1024 x 768 x 60 = about 47 MHz. A standard XGA display would easily transmit over a single digital link. A single link cable could support standard HDTV (1920x1080)! Dual link can support QXGA (2048x1536) without any problems.


10-10-05, 11:39 AM
To me the difference between DVI and analogue is like night and day, but then I'm fussy like that, others I know can't see the difference. Probably moreso for cheaper displays, which will tend to have cheaper (=> poorer) analogue signal handling circuitry -- but that's just a hypothesis.

10-10-05, 11:54 AM
I don't even know how you can compare analog and DVI. The improvement DVI offers is phenominal in comparison, unless you have a crappy monitor. But then in that case you probably wouldn't care either way.

10-10-05, 12:23 PM
Use Dvi!!!

10-10-05, 12:35 PM
Well... That's true... As long as you got an HDCP-capable monitor/devices...

10-10-05, 12:46 PM
So would a CRT user benefit from using a DVI to Analog converter? As in plugging in a CRT monitor into DVI using a converter seen here (http://www.cyberguys.com/templates/searchdetail.asp?T1=121+2285&dept=&search=&child=)

10-10-05, 01:14 PM
So would a CRT user benefit from using a DVI to Analog converter? As in plugging in a CRT monitor into DVI using a converter seen here (http://www.cyberguys.com/templates/searchdetail.asp?T1=121+2285&dept=&search=&child=)

Not sure, but I really doubt it. Any conversion to analog causes you to lose color and contrast control. It has to resort to frequency modulation which is prone to guesswork and error, and thus the quality is likely to be reduced.

10-10-05, 01:31 PM
I got my dell 2005fpw in august and have been using DVI since. Before that I had CRT all my life with VGA. There is a big difference, mostly the clarity of the picture. It's more.... well.... digital.