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How does Dual-Link DVI work?

B

bcoupland

Senior member
I have noticed that some high-end monitors have a feature called dual-link DVI, presumably with two
DVI connections to one monitor. How does this work. Just Curious.
 
Unless I remember incorrectly, that new apple 30" monitor uses a resolution even higher than 2048x1536...
 
The new Apple is something like 2560x1200 and requires a special
6800Ultra to drive it. Apple also says that it will run two 30" displays
for a resolution of 5120x1200. That poor, poor video card.
 
Originally posted by: bcoupland
I have noticed that some high-end monitors have a feature called dual-link DVI, presumably with two
DVI connections to one monitor. How does this work. Just Curious.
Click to expand...
Dual-link DVI is one DVI connector with twice the usual bandwidth. It uses all 24 pins of the connector. (Standard single-link DVI does not.)

Originally posted by: bcoupland
The new Apple is something like 2560x1200 and requires a special
6800Ultra to drive it. Apple also says that it will run two 30" displays
for a resolution of 5120x1200. That poor, poor video card.
Click to expand...
It's 2560x1600.

And yeah, the Apple nVidia GeForce 6800 Ultra has TWO dual-link DVI ports, so it can run two separate 30" 2560x1600 monitors, for a combined resolution of 5120x1600 (8.2 Megapixels).
 
graphics really isn't my specialty but, aside from dual link being part of the DVI standard as set my Intel guidlines,i really don't think its used often if at all for consumer graphics cards. it seems to be an overkill addition to the standard that will never really be used.
 
Originally posted by: CSMR
Are the DVIs on most video cards (9x00 etc.) dual link or single?
Click to expand...
Single. It's good for up to 1920x1080 @ 60 Hz. Actually, 1920x1200 @ 60 Hz seems to work fine.
 
Hey.. Are there any gfx-cards for the PC that support Dual link right now?

And also.. are there any monitors except apple's latest that has this feature?
 
Originally posted by: BDSM
Hey.. Are there any gfx-cards for the PC that support Dual link right now?
Click to expand...
Yes, but they are uncommon and very expensive.
And also.. are there any monitors except apple's latest that has this feature?
Click to expand...
Yes, but they are uncommon and very expensive.

Apple's offering of a dual dual-link DVI card with two 30" LCDs seems quite cheap in comparison.
 
graphics really isn't my specialty but, aside from dual link being part of the DVI standard as set my Intel guidlines,i really don't think its used often if at all for consumer graphics cards. it seems to be an overkill addition to the standard that will never really be used.
Click to expand...
I think it will be used very often in the future. Monitors are scaling up in terms of DPI because it is now possible to do so with LCD and OLED displays.
 
Hey EUG.. Thanx for the reply.. What gfx cards are those?.. I have googled this and I can find no info on dual link capable cards at all.

Also.. do any of the current lcd screens support this ?(apart from the apple 30 incher that is)
 
Originally posted by: AWhackWhiteBoy
graphics really isn't my specialty but, aside from dual link being part of the DVI standard as set my Intel guidlines,i really don't think its used often if at all for consumer graphics cards. it seems to be an overkill addition to the standard that will never really be used.
Click to expand...
Yeah, but these apple PCs seem to take on a lot of characteristics of workstations as time goes by.
 
Originally posted by: Eug
Unfortunately, both OS X and XP are still really best suited for around 100 ppi.
Click to expand...
No they aren't! I like squinting! 🙂
Yes, they need to move to a real-world measurement for dimensions, using pixels as measurement only for decorations.
 
Aganack1.. Hey there.. thanx for the help. But I think those cards don't have dual link dvi. They do have dual ramdacs. But thanx anyway!
'
 
Originally posted by: Cerb
Originally posted by: AWhackWhiteBoy
graphics really isn't my specialty but, aside from dual link being part of the DVI standard as set my Intel guidlines,i really don't think its used often if at all for consumer graphics cards. it seems to be an overkill addition to the standard that will never really be used.
Click to expand...
Yeah, but these apple PCs seem to take on a lot of characteristics of workstations as time goes by.
Click to expand...

Most of the top end mac personal computers have had alot of what we define as workstation minded engineering. Many macs were dual processor, native or optional SCSI, large RAM capacity, gigabit ethernet (when it was young), A/V capabilities and S-video, etc etc. Thier OS and software bundles have been heavy user/workstation minded as well. Much of the mac community was built on multimedia people. Apple has usually been first to adopt expensive higher end technologies before the IBM clone world has. All depends on the needs of your user audience. Mac user audience has largely been people who demanded higher performance for their specific needs and Apple put that all in one easy relatively inexpensive package. The PC trend went more to cheap machines to do more less demanding applications, although the line has greyed alot in the past several years.
 
To my knowledge there are no dual link DVI consumer PC video cards, only the FireGL, Quandaro, Wildcat, Ect... workstation cards come w/ dual link DVI and some specific Matrox cards used in medical imaging. Dual link DVI cables are fairly common and not that much more expensive but getting a dual link DVI card for the PC isn't cheap.
 
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