Here is a side by side comparison of the Nokia Lumia 720 with the Nokia Lumia 820, both the devices offering a premium build hardware in the a mid-level price range.
The Lumia 820 is powered by a 1.5GHz Dual Core processor, whereas the Lumia 720 is powered by a 1GHz Dual Core processor. The Lumia 820 offers a GB of RAM, whereas the Lumia 720 only offers 512MB of RAM.
