The displays on the new iMacs these days are big enough and high enough quality that I think they should be perfectly adequate for my gaming purposes, too.

I will be upgrading to one of the new iMacs this fall, and I think it could replace my television entirely.

While you could use an external Video In adapter that connects to Firewire or USB, such as ElGatos EyeTV, the latency introduced makes these devices singularly unsuited for any sort of gameplay.

Would the situation be improved at all if it were a Thunderbolt Display instead of an iMac.

Apple cut the cord on backward compatibility pretty hard with Thunderbolt.

In general, most game consoles are optimized to output at resolutions of, at best, 1080p, or 1920x1080, and often less.

The picture was clearer than the 50 LCD 1080p I play on now, due the higher dpi.

To get 1440p resolution, you usually have to get a 27 or larger monitor, which at upwards of 600 makes little sense when you can usually get a 40 LCD 1080p for that price.

You can use most any monitor you want with it, so that gives you many more options.

If you buy a monitor that has both HDMI and DVI, you can use DVI for the Mac Mini (the Mac Mini ships with a HDMI-DVI adapter IIRC) and HDMI for your Xbox 360 for example.

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