LG Nexus 5 recently announced and it's a great smartphone having 3 GB of RAM and running new android OS "Android OS 4.4 KitKat".
LG Nexus 5 Smartphone Specification
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1700 / 1900 / 2100, HSDPA 900 / 2100
4G Network LTE
5.0 inches True HD IPS Plus capacitive touchscreen, 16M colors, 1080 x 1920 pixels, Multitouch
16/32 GB storage Of Internal Storage
3 GB RAM
GPRS Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps
EDGE Class 12
Speed DC-HSDPA, 42 Mbps; HSDPA, 21 Mbps; HSUPA, 5.76 Mbps; LTE, Cat3, 50 Mbps UL, 100 Mbps DL
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi hotspot
Bluetooth v4.0 with A2DP
NFC Yes
USB microUSB (SlimPort) v2.0
Android OS 4.4 KitKat
Chipset Qualcomm MSM8974 Snapdragon 800
CPU Quad-core 2.3 GHz Krait 400
GPU Adreno 330
Sensors Accelerometer, gyro, proximity, compass, barometer
Messaging SMS(threaded view), MMS, Email, Push Mail, IM, RSS
Browser HTML5
GPS with A-GPS support and GLONASS
Java via Java MIDP emulator
Colors Black, White
Non-removable Li-Po 2300 mAh battery
Camera 13 MP, 4128 x 3096 pixels, autofocus, LED flash, Geo-tagging, touch focus, face detection, photo sphere, Video 1080p@30fp
