Wired. I want to take the output of my graphics card and put it into the 10" screen. While playing across a range would be sweet, there's only a few devices that Iknow that can do that wirelessly, and that's because they have TEGRA 4 chips but they don't have high enough resolution. Doing a wired connection means that the tablet doesn't die from power drain and has direct reception from the graphics card.
Yes, I do realize. I have eyes. However, your questions don't really help. I'm trying to get the output of a graphics card and use my tablet as the monitor. IT's not a matter of pointless DPI, it's a matter of using a table as a display for high end graphics.
The reason for the 10 inch real estate is to cut down on space as well as the effect of tunnel vision. Having 2560x1600 pixels in a smaller real estate enables me to see everything on screen in one view instead of having to shift my gaze momentairly to glance the corners.