HDMI to DVI Adapter: Difference between DVI 18+1 and 24+1 Plugs and Image Quality Impact

Question

Hello,

needs an HDMI to DVI adapter. Among the available adapters (cables) I found two types of DVI 18 + 1 and 24 + 1. Could someone explain to me what is the difference between the DVI 18 + 1 plug and the 24 + 1 plug in this adapter? Will there be better image quality or what?

Thanks for the help.

Platon · Answer

Not. Differences in max. supported resolutions. He's on Wikipedia.

grzechura · Answer

And what are these resolutions? because on Wikipedia somehow I do not see it ...

jokrasa · Answer

1) Examples of working resolutions (single channel) - DVI SINGLE LINK:
o HDTV (1920 × 1080) @ 60 Hz with 5% LCD flicker (131 MHz)
o UXGA (1600 × 1200) @ 60 Hz with GTF (161 MHz) flicker
o WUXGA (1920 × 1200) @ 60 Hz (154 MHz)
o SXGA (1280 × 1024) @ 85 Hz with GTF flicker (159 MHz)
2) Examples of working resolutions (dual channel) - DVI DUAL LINK:
o QXGA (2048 × 1536) @ 75 Hz with GTF flicker (2 × 170 MHz)
o HDTV (1920 × 1080) @ 85 Hz with GTF flicker (2 × 126 MHz)
o WQXGA (2560 × 1600) @ 60 Hz flicker GTF (2x174 MHz) (30 "LCD Dell, Apple, Samsung, HP, Quinux)
o WQUXGA (3840 × 2400) @ 33 Hz with flickering GTF blanking (2x159 MHz)

HDMI to DVI Adapter: Difference between DVI 18+1 and 24+1 Plugs and Image Quality Impact

HDMI to DVI Adapter: Difference between DVI 18+1 and 24+1 Plugs and Image Quality Impact

grzechura · Answer

jocrat Could you, based on your answer, tell me what are the differences in supported resolutions for a given mode of operation? The picture is also nice, but what for? I would be very grateful for any help regarding my question.

jokrasa · Answer

The differences in the supported resolutions are related to the use of DVI-I 24 + 1, thus the refresh rate increases if the receiver allows it.

In your case, it may only be theory and the refresh rate and resolution will remain the same as when using the DVI-I 18.1 cable.

You can buy it in advance, unless the receiver you want to connect supports higher resolutions (as the data and the picture show) and supports higher refresh rates.

What do you want to connect?
(provide video card, TV model or projector model)

Regarding your question: if you have equipment that supports higher resolutions and higher refresh rates, it is worth buying an HDMI - DVI-I 24 + 1 cable.

grzechura · Answer

So I will come back to the question: what does higher resolutions mean? The ATI HD3650 graphics card is to be connected to the LG 227wtp Monitor.

jokrasa · Answer

If a cheaper adapter, as it probably is, buy HDMI - DVI 18 + 1.
The graphics card supports - it gives a full HD 1080p image, i.e. a resolution of 1920 × 1080. Max type: DVI SINGLE LINK

However, your monitor does not display full HD 1080p because it has a chapter: 1680x1050.

But where are you going to connect those HDMIs in this monitor?

Higher resolutions? question (in your context, HDMI will mean the number of horizontal lines) - just read, I won't rewrite or quote.

http://pl.wikipedia.org/wiki/1080p

And here is HDMI and HDCP

http://pclab.pl/art22801-4.html

End and period.

grzechura · Answer

And at least the topic of the post has been read by a friend? If it all boils down to a resolution above 1920x1080 then the matter seems to be solved.

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