Key features
5.2" IPS LCD, 1080 x 1920 pixels, 424ppi, ambient light sensor
LTE connectivity
Android 4.4.4 KitKat with Xperia UI on top
IP68 certified - dust and water proof up to 1.5 meter and 30 minutes
Qualcomm Snapdragon 801 chipset with quad-core 2.5GHz Krait 400 processor, Adreno 330 GPU and 3GB of RAM
20.7MP camera, single LED flash, 2160p video recording, dedicated hardware shutter key
2.2MP front-facing camera with 1080p video recording
16/32GB of built-in storage, expandable via the microSD card slot
Active noise cancellation with a secondary microphone
3,100mAh battery; STAMINA Power Saving Mode
Stylish dual glass-panel design
Main disadvantages
Non user-replaceable battery
Slightly larger than most direct rival
The Sony Xperia Z3 is powered by an MSM8974AC Qualcomm Snapdragon 801 chipset, which runs the Krait 400 CPU at the maximum 2.5GHz and clocks the GPU at 578MHz. The MSM8974AB chipset that powers the previous Sony Xperia Z2 is slightly behind with the CPU at 2.3GHz and the GPU at 550MHz.
To get the numbers sorted, the Xperia Z3 has a Snapdragon 801 chipset with four Krait 400 cores clocked at 2.5GHz, an Adreno 330 GPU @578MHz and 3GB of RAM.