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Recently installed a new quality monitor capable of a screen resolution of 2560x1600 that replaced my old 1920x1200 monitor. The old Dual DVI-D cable was able to feed the old monitor perfectly with 1920x1200 @60Hz with 32 bit colors per pixel.

When however the new monitor now is connected at its own native resolution of 2560x1600 (or even 1920x1200) through the same Dual DVI-D cable of 1.8 meters, then all kinds of artifacts show up (see picture).

When however the refreshrate now is brought down to just 37 Hz, then the picture becomes perfectly sharp, without a single (sub)pixel defect. But I would like to have that sharp native resolution at 60Hz not 37 Hz. How to achieve that? is the monitor faulty or the cable?

30" monitor running at 2560x1600@50Hz

And how is it possible that the same cable could feed the previous monitor with 1920x1200 perfectly, but not the new monitor with the same 1920x1200 resoluion without the image becoming artifacted?

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We need way more info to give you a real answer... Exactly what make and model of monitor is it? Exactly which make/model of video adapter/card are you using? Does the monitor actually support the 2560x1600 resolution at something higher than 37Hz? I do agree though that it does sound like you may be running into the single-link limit; so are you SURE that both your DVI cable and video card's DVI port are both dual-link capable? Have you tried a different cable? how about trying the monitor on another computer? –  Ƭᴇcʜιᴇ007 Dec 5 '12 at 20:04
    
@techie007 Thanks for your comment here are the EXACT answers: EIZO SX3031W 30" (new) and EIZO S2410W 24" (old) both having two DVI-D input connections, graphics card: Gigabyte Nvidia 470 GTX 2GB ram dual DVI-D outputs. Apparently it does support that @37Hz! is that strange?? Curious!! Before taking the plunge to purchase another cable (or pc) need to first find out whats wrong here before purchasing HighQ stuff :) Thanks for any ideas/suggestions/logics. –  Sam Dec 5 '12 at 20:13
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Educated guess without being familiar with these monitors, but this sounds like the cable to me. –  Shinrai Dec 5 '12 at 20:29
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I think you just don't have a real dual-link DVI cable. Check out this similar/related question about the same monitor with the same problems: MacBook Pro 2010 with external monitor Eizo 2560x1600 –  Ƭᴇcʜιᴇ007 Dec 5 '12 at 20:35

1 Answer 1

up vote 1 down vote accepted

check your cable make sure it is indeed a dual link cable. here's a reference: http://en.wikipedia.org/wiki/Digital_Visual_Interface#Dual-link_DVI

The only DVI cable that will hit the resolution you want is DVI-D Dual link

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Thanks @acme64 i've checked the cable and it is an Dual Link DVI-D cable strange huh?! –  Sam Dec 6 '12 at 8:34
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@Sam May be the second link is defect. Your old monitor did not made use of the second link. –  Robert Dec 6 '12 at 9:31

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