The Sony Xperia X series will be available in 3 variants - X, X Performance, and XA. All the phones feature a 5-inch display with the first two having having a 1080p resolution screen and the XA having a 720p screen.
The Xperia X Performance is powered by the new Snapdragon 820, along with 3GB of RAM. Xperia X uses a mid-range Snapdragon 650 and 3GB of RAM. The Xperia XA will use a octa-core MediaTek MT6755 processor and 2GB of RAM.