Google Nexus 10 has a 10.055″ display with a 300 ppi. It is powered by the Exynos 5250 processor, which features two ARM Cortex A15 cores running at 1.7 GHz and a powerful ARM Mali T604 GPU. The device comes with 2GB of RAM, and either 16 or 32 GB of internal storage. At the time of its release it ran on Android 4.2.
Nexus 10 was released in 2012. Its been more than 3 years so Google has stopped providing official support for this device. But it has not stopped CyanogenMod team from creating custom ROM for Nexus 10. They have created CM 13 ROM which will update Nexus 10 to Android 6.0. A detailed guide on how to install this ROM on Nexus 10 is given below.