ok so the new 17 in mbp has a screen at 1920 x 1200 resolution that comes out to 133.19 pixels per inch. that is a really really high number so i was thinking, if someone got a second monitor to use next to it, and wanted it at the same resolution as the laptop, would it even be possible? ive looked around a little bit, and at 2560 x 1600 (which is most 30in screens) you would have to get a 23in monitor that would be 131 pixels per inch. im just wondering because, when i got a second monitor for my 15in mbp it was my main goal to get something with a similar resolution so when i work side by side things will be the same size. it took me a while to find a screen that matched the 15in mbp pixels per inch at 113 and the closest i could find was a 1680 x 1050 at 19in with a pixel per inch of 104.