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Kwadd you're full of shit ... a 20 inch monitor is 16 inches by 12 inches or 400 square inches ... at 900 Pixels per inch your resolution is 480 x 360 ... 1600 x 1200 is 4800 Pixels per inch ... Edit: I was talking about "Pixels per Square Inch" in my initial posting because that is the only measure I have seen relating to an eye's ability to see. Edit 2: The reason the standard PPI is not used for this is because it is not as well defined 1,000,000 X 1 in a 1 inch square is still 1,000 PPI in the standard PPI measure ...