I'm setting up a 6 monitor array and have bought all the monitors and PC parts, but I just realized I have to plug all this stuff in! If I were to run two power strips from a single plug in in my house and plug all this stuff in, would that be dangerous?
Let's calculate the amperage needed:
550w / 0.8 (estimating max wall load for 80% efficiency) = 687.5 W
72 W (maximum power draw of a U2412M according to Dell's website) * 6 = 432 W
Total 1,119.5 Watts, so as long as the circuit and power strips are rated for more than about 9.33 amps (120V) or 4.66 amps (240V), you should be okay.