A pirate walks into a bar with his ship's wheel down the front of his pants. When he gets to the bar the bar tender asks, "Why do you have a wheel down your pants?" The pirate says, "Arr, It's driving me nuts."
Cable management is a must but I also like little things like thumbscrews on the add-in card slots. The only time I had to use a tool on my last build was for those slots.
He's basically saying that while the 6850 does support eyefinity the kinds of resolutions that you use in eyefinity are demanding and you would need a faster video card to handle them.