I bought 2x U2713HM monitors almost a year ago. I used my x-rite calibration tool (eye-one Match 3) to get these two monitors to match- they colors seem to match perfectly.
I recently purchased a new U2713HM for a triple monitor setup. I tried to calibrate this new monitor and it is a little off from the other two- it seems like the white balance is off. It is close, but it is clearly not the same.
My other two monitors are perfect, but this one is off and it bothers me after spending so much on a third monitor. I am using a GTX 660 to run all monitors, DVI for two monitors, displayport for the third, all running 1440p resolution. I did try switching the DVI and displayport connections and the monitors colors are still off.
Any ideas?