I got myself a new Apple LED 27″ Cinema Display along with an ATI Radeon HD 5770 graphics card for my aging MacPro. I took a look at the Dell UltraSharp U2711 display and decided that I did not want the anti-glare coating that comes with it.
I had a major D’oh moment when setting it up. For some reason I was not getting a picture after I plugged it in. I did a little research and found that you need to push the Mini DisplayPort plug firmly into its socket until you get a secure click and the plug is flush with the socket. Everything worked once that was done.
I noted a couple of things. Contrary to the answers on the Apple Store, this card will drive three monitors on an older MacPro (I have a 1,1 model). And the cord on display is on the short side, which is fine if you use this monitor with a laptop, but does not work so well if you use a deskside machine like I do and I had to get an extension cable.