It is really hard to make a case for the 590 .....
At $750, you can get 98% (calculated, not a guess) of the performance for $430 using twin 900 MHz 560 Ti's
Adding a 2nd 590 gives a relatively miniscule 11% speed increase.
The Ultra Sharp's w/ that superb IPS panel are amazing monitor's for photo buffs; Son No.2 (minoring in photography at college) has an Ultrasharp upstairs and it does quite OK for gaming.
You didn't state your intended usage but ...... if this is going to be primarily a gaming box, I'd go another way.....I'd use a 120 Hz monitor which son No. 3 has and looking side by side, the 120 HZ asus is superior for gaming ....... three 120 Hz monitors would also cost ya only $870 .... almost $400 less than the 3011:
Kinda confused as to the interest in HDMI cable ..... a system that expensive doesn't seem like ya would wanna rely on the teeny speakers in a monitor .... My son's UltraSharp doesn't even have speakers.
Could add a cheap GT 220 if ya like to handle PhysX assuming you have a 3rd PCI-E slot
UltraSharp U3011 30" 2560 x 1600 1000:1 Widescreen LCD Monitor
AudioQuest Forest 2.0m (6.56 ft.) Black/Green HDMI Cable
ASUS GeForce GTX 590 (Fermi) 3072MB 768-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card, ENGTX590/3DIS/3GD5
Does the graphics card even have HDMI and if it does will a standard double sided hdmi cable work?
I have an Ultrasharp u3011, it is a great investment. However, while those are compatible you will not be able to properly use the monitor with an HDMI cable. The u3011 only supports resolutions up to 1920x1200 over HDMI, if you want to take advantage of the full 2560x1600 resolution and multiple colour spaces you will need to use either Display Port or DVI. Fortunately, the monitor comes with both a Display Port and DVI cable included, so you need not shop around for either of those
Quick edit: the included DisplayPort cable is a full sized Male-Male DisplayPort cable. Some graphics cards (and most laptops) are equipped with Mini-Display port due to its smaller physical size. There is no visual difference between DisplayPort and DVI as they are pin compatible, the only difference is that DisplayPort can be daisy chained and carries audio as well, neither of which you will need unless for some odd reason you wish to use the audio output on the monitor