OMG the amount of misinformation in this thread is obscene.
No offence bro, but most PCs these days connect to LCDs via DVI too. And secondly, the graphics chips on Macs are far inferior to the high end 8800 series from Nvidia from PCs.
I think some of you need to have a look at pictures on a Dell Ultrasharp 24" connected to a dual core Wintel machine then see if you still think that images look better on a mac :think:
Though I may not be a geek but I cannot see how the NVIDIA Quadro FX 4500 on my mac is "inferior" to the 8800 series chips. I work on 2 monitors, the Apple 30" display and the Lacie 526 which can display colours in 16bits (if I am not wrong, the dell 24" can only display in 8 bits). I also callibrate it using a colorimeter and it can display, according to the specs, 95% of aRGB. Please eloborate how these high end 8800 series graphics cards with Dells can improve my displays.