The U2711 is a wide gamut monitor, right? That means you need a video card that is capable of doing 10 bit color if you want to get the most out of it. You'll have to get a professional card (like the ones made for CAD), either an Nvidia quadro or ATI Firepro. I've also read that the consumer Nvidia cards will do it, but I don't have any personal experience with them and I've only seen it a couple places. I know the comercial ATI cards won't do 10 bit color. It's stupid because they are more than capable, they're just crippled so that they can't.
Canon 6D, Canon 5Dc, Rebel T2i, Canon EF-S 10-22, Sigma 35/1.4, Olympus OM Zuiko 21/3.5, 24/2.8, 28/2, 40/2, 50/1.4, 50/3.5 macro, 100/2.8, Canon EF 20/2.8, 35/2 IS, 40/2.8, 50/1.4, 85/1.8, 200/2.8L, Contax/Zeiss 28/2.8, 50/1.7, 85/1.4, 135/2.8, Soligor 135/2