Got my monitor, it is very nice. Had to use Nvidia drivers to get it dim enough though.
Is this one of the OSD-less Korean monitors? If so, one of the buttons should dim the backlight, but it may not be noticeable until you get near the bottom of the brightness range. I have one of the Qnix 2560x1440 monitors and it's like that. It has 30 levels of brightness (I counted), but the entire useful range is in the bottom 5. Anything above that is like staring at a light bulb.
Yeah it is. I found the brightness buttons and took it as low as it would go before I broke out Nvidia's tweaker. I am not down a lot from dimmest but I like em' dark.
An amazing thing so far. Pretty well perfect, no obvious pixels I can see, excellent colour, I usually tweak colour in all my monitors, not this one. Very pleased indeed. ESO is so fine at 2560x1600, I just wander round pretending I am a photographer, something I do in real life.