The Raspberry Pi 2 Model B represents a major performance increase over its single-core based predecessors: Up to six times faster in fact. As well as a new quad-core Cortex-A7 processor， the Raspberry Pi 2 Model B now features 1GB of RAM memory. The operating system kernel has been upgraded to take full advantage of the latest ARM Cortex-A7 technology and is available with the new version 1.4 of NOOBS software. Backward application hardware and software compatibility has been maintained with the Raspberry Pi 1 Model A+/B+.

Highlights:
● Features Broadcom BCM2836 900MHz ARM Cortex-A7 quad-core processor with VideoCore IV dual-core GPU， it can run the full range of ARM GNU / Linux distributions， including Snappy Ubuntu Core， as well as Microsoft Windows 10
● GPU provides Open GL ES 2.0， hardware-accelerated OpenVG， and 1080p30 H.264 high-profile decode
● GPU is capable of 1Gpixel/s， 1.5Gtexel/s or 24GFLOPs with texture filtering and DMA infrastructure
● 1GB LPDDR2 SDRAM
● HD 1080p video output
● Composite video (PAL/NTSC) and stereo audio output
● Socket: 10/100 BaseT RJ45 Ethernet， HDMI 1.3 / 1.4 AV， 3.5mm 4-pole audio / composite video， USB 2.0 (4 ports)， Micro SD card
● 15-way MPI CSI-2 connector for Raspberry Pi HD video camera
● 15-way Display Serial Interface connector
● Boots from Micro SD card， running a new version of the Linux operating system
● 40-pin header for GPIO and serial buses (compatible with Raspberry Pi 1 26-pin header)
● Power supply: 5V/2A via micro USB socket
● Fireware looks for add-on boards that comply with the HAT design rules. This allows the Raspberry Pi 2 Model B to set up the GPIO and load drivers to suit an expansion board automatically