Well, it started out with me pointing out that 4K would provide a positive benefit to my home theater, which is a 100" screen viewed from 6 to 8 feet. Every chart and rule-of-thumb I've seen indicates that the maximum perceptible resolution for my setup would be well over 1080p. Personally, I think the max benefit for my setup would be somewhere around 3K.
My computer monitor would also benefit much more so. If your screen is high enough resolution (as in, you can't discern individual pixels), then you should see no visible difference when you enable anti-aliasing. But having been playing through System Shock 2 recently, I can tell you that a 1440p 27" monitor is nowhere near "retina" levels. The jaggies were strong with this one.--
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