Response:
I will mainly be doing the mundane web surfing, and Office applications, but I do download films and then Expand them with Rar Expander, and then will watch some large file films at times. Perhaps some video editing, but not heavy duty. The problem is that when my friend attached his base Mac Mini to a 30 ACD and ran video at the max resolution of 2560X1600, it sometimes stuttered just in viewing videos. We brought down the resolution and the lagging decreased and stopped, except when we started watching a large video file, 8gb. We did notice that when on maximum resolution the cpu usage was extremely high, between 70 and 80%.
I'm currently on an Imac from mid-2007, with 2.4 ghz and ATI radeon 2600hd graphic card, 256 dedicated VRAM. I love the new 30"ACD but can't connect to the Imac and get more than half the maximum resolution, that being 1260X800, which is ok for video watching but terrible for text and writing. We thought that perhaps the mac Mini might be the best solution with the dual link adaptor. Also looking into an earlier model macpro with 2 2.66intel duo processors and nvidia 7300gt graphic card.
I just don't want to waste time and effort if in the absolute running a large display like this off of the 9400nvidia card is just pushing it to the point where it's best to go another route. Wish there was a work around for attaching the display to my current Imac.