So when you see the words HD, how High Definition can it really be? The new iPad has the highest resolution on any tablet ever. The iPad 2 had a screen resolution of 1024×768 at 136 pixels per inch (ppi), the new iPad has a resolution of 2048×1536 at 264 ppi. That is 3.1 million pixels in the whole screen! That is 4 times the amount of pixels on the iPad. In the picture below you can really see the difference that pixel density makes. For reference the iPhone 4S has 326 ppi.
So is the Retina display of 1080p?
To be 1080p it requires that the screen is 1,080 pixels tall. The new iPad is in fact about 456 pixels more than 1080p. Apple has provided us with the comparison of a 1080p and the new iPad on the right.
A higher pixel density allows for you to have greater quality apps and of course stream true 1080p from iTunes or other video sources. The increased resolution will allow you to see greater details in your photos as well as in text that you read through iBooks or on the web.
While there is a big debate over what tablet operating system is the best, it is hard to argue better resolution specs.
Image source: The Verge