Nexus 5 is powered by a powerful Qualcomm Snapdragon 2.3GHz quad-core processor, 2GB of RAM and an Adreno 330 GPU. The 4.95″ True HD IPS Plus display has a resolution of 1080 x 1920, with a pixel density of 445 ppi. Storage comes in at either 16GB or 32GB. Other features include an 8MP camera, LTE connectivity and a 2300mAh battery.
Google will not push out official Android 7.0 for Nexus 5 since its two year window period has passed. However CM 14 ROM is available for Nexus 5 which will update this device to Android 7.0. It is still in the beta stages but is quite stable. A detailed guide on how to install CM 14 on Nexus 5 is given below.