Raspberry Pi 4B - 8GB RAM

Here comes the 4th generation Raspberry Pi model B of popular Raspberry Pi family! Compared to the prior-generation Raspberry Pi 3 Model B+, Pi 4B offers significantly increases in processor speed, multimedia performance, memory, and connectivity. For the end user, Raspberry Pi 4 Model B provides desktop performance comparable to entry-level x86 PC systems, which could let you enjoy smooth and high-quality experience!
Raspberry Pi 4B includes a high-performance 64-bit quad-core processor, and features dual-display support at resolutions up to 4K via a pair of micro-HDMI ports, hardware video decode at up to 4Kp60, up to 8GB of RAM, dual-band 2.4/5.0 GHz wireless LAN, Bluetooth 5.0, Gigabit Ethernet, USB 3.0, and PoE capability (via a separate PoE HAT add-on).

Overview

Peripheral Interface

Dimension

Pi 4B vs Pi 3B+

• Processor: Broadcom BCM2711, quad-core Cortex-A72 (ARM v8)

• Memory: 1GB, 2GB ,4GB or 8GB LPDDR4   (depending on model)
• Connectivity: 2.4 GHz and 5.0 GHz IEEE 802.11b/g/n/ac wireless LAN, 

• GPIO: Standard 40-pin GPIO header

• Video & sound: 2 × micro HDMI ports (up to 4Kp60 supported)

• Multimedia: H.265 (4Kp60 decode);

• SD card support: Micro SD card slot for loading operating system and data storage
• Input power: 5V DC via USB-C connector (minimum 3A1)

• 5V 3A Power Input