Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I have two DVI-I to VGA adapters yet each one is different. From what I can tell one is a single link and the other a dual link DVI-I adapter.

I read some about this on wikipedia but I get lost in the technical details between single and dual link DVI. Can someone exaplain what the difference is and is one better to use over the other? (Keep in mind I am running on an older VGA monitor)

Here are a couple images, one a diagram between Single and Dual and then one of the actual adapters.

Diagram Showing the difference between Single amd Dual Link DVI-I Photo showing the two DVI adapters

share|improve this question
add comment

2 Answers

up vote 3 down vote accepted

Single-link and Dual-link only apply to the digital connection, not the analog VGA connector. See the DVI to VGA pin conversion.

There shouldn't be any difference between the adapters. I don't know why one has all the pins in it when it doesn't need them.

share|improve this answer
add comment

I have done a bit more searching and I came across this:

DVI dual link as the name implies has more conductors than the DVI single link for transmitting signal. Single link DVI supports a maximum bandwidth of 165 MHz (1920 x 1080 at 60 Hz, 1280 x 1024 at 85 Hz) and utilizes 12 of the 24 available pins. Dual link DVI utilizes all 24 available pins and supports 2x 165 MHz maximum bandwidth (2048 x 1536 at 60 Hz, 1920 x 1080 at 85 Hz).

share|improve this answer
    
You might want to add this as an edit to your question –  soandos Nov 30 '11 at 5:35
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.