Are all large displays around 100dpi?

I'd always assumed displays went for the 72 dpi, the so-called "screen" resolution.

I currently run a great Philips 20" monitor - the screen quality is fantastic. I've just found out that this, and indeed the Apple Cinema display range are all 100dpi. Is this the norm now for large displays? Is so, should we reclasify screen resolution to 100dpi?

P.S. I'm drooling over the 30" display for my MBP - is it worth the cash?

Screen DPI is strictly a function of your resolution vs. your screen size. I am not sure we can ever really say what is the norm... it depends on the screen you are using and its native resolution. That having been said, 96 DPI to 100 DPI seems pretty standard on lots of larger displays these days.

That 30" monitor? Whether it is worth or not is really up to you. Do you need that much real estate for what you are doing? That is a L-A-R-G-E display. You likely would have to almost sit back to take in the whole thing at once. I find that even a 24" display has that effect on me.

If you are doing serious heavy duty photo or video editing, or REALLY want to watch TV on your screen, it might be worth it.

One last question - does the MBP have the ability to drive a display that large? ...and, does it support dual link DVI, which I understand is needed for most resolutions larger than 1600x1200? I honestly don't know the answers to these questions, but if you will need to find them if you are getting serious about that display! Good luck!

The MacBook Pros do have a dual link DVI port so they can support the 30in.

If I was going to get a 30in LCD, I would get the Dell. I wouldn't be able to justify spending that much more for the aluminum bezel with an Apple logo on it. If it was only $100-200 more, maybe, but the difference is easily more than $700.

I have my PC hooked up to a 37" LCD...god is it amazing. I can't wait to hook up my MBP.

Do Dell do a 30" monitor? I'm not to keen on the design - my setup at home is all silver and white so a Dell would look out of place. I know the UltraSharps are good value though and are a good spec.

Any Macbook Pro will run a 30" display since it has dual DVI. With normal DVI you can still go up to a 1980 x 1200 display.