nt5k said:
Define 'drive'.
If you mean you can't use the display at all, that is just wrong.
If you mean use it at its full resolution, than you would be correct.
Well, I am only commenting because I actually have a 30" HD hooked up to a 17" PB and it does work, but I can't go above 1280x800. And neither can my pc, despite setting the video to 1920x1200.
ok.. doing a bit of math i have come up with THIS idea... whether it is correct or not is not really something i am sure of.. but it might give you an idea
ok.. Dual DVI is.. dual right? meaning 2, the resolution of a 30" display is:
2560 x 1600 = 4,096,000 pixels
if dual is.. dual.. 4096000 / 2 = 2,048,000 pixels per "link"
let's say you want to drive that display at the same resolution as a 23" which is:
1920 x 1200 = 2,304,000 pixels .. this is MORE than one channel can handle
see.. 2,304,000 - 2,048,000 = 256,000 ... too many pixels to be exact.
1280 x 800 = 1,024,000 * 2 = 2,048,000 or the same as each "link" of D-DVI
meaning you can power 2 displays at 1280x800 ... but only because that's the most number of pixels each link can pump out.. together however, they pump out enough to cover a 30" display running at 2560x1600... the math seems to make sense to me.. see if you can follow it