Raspberry Pi 4 - Model B - 1GB RAM - Cortex-A72 (ARM v8) 64 bits

Raspberry Pi 4, completely upgraded, re-engineered, faster, more powerful.

Your new desktop computer.

The speed and performance of the new Raspberry Pi 4 is a step up from earlier models. For the first time, they have built a complete desktop experience. Whether you're editing documents, browsing the web with a bunch of tabs open, juggling spreadsheets or drafting a presentation, you'll find the experience smooth and very recognisable — but on a smaller, more energy-efficient and much more cost-effective machine.

Features:

• Silent, energy-efficient: The fanless, energy-efficient Raspberry Pi runs silently and uses far less power than other computers.
• Fast networking: Raspberry Pi 4 comes with Gigabit Ethernet, along with onboard wireless networking and Bluetooth.
• USB 3: Your new Raspberry Pi 4 has upgraded USB capacity: along with two USB 2 ports you'll find two USB 3 ports, which can transfer data up to ten times faster.
• 1GB RAM

Specifications:

• Broadcom BCM2711, Quad core Cortex-A72 (ARM v8) 64-bit SoC @ 1.8GHz
• 1GB LPDDR4-3200 SDRAM 
• 2.4 GHz and 5.0 GHz IEEE 802.11ac wireless, Bluetooth 5.0, BLE
• Gigabit Ethernet
• 2 USB 3.0 ports; 2 USB 2.0 ports.
• Raspberry Pi standard 40 pin GPIO header (fully backwards compatible with previous boards)
• 2 × micro-HDMI® ports (up to 4kp60 supported)
• 2-lane MIPI DSI display port
• 2-lane MIPI CSI camera port
• 4-pole stereo audio and composite video port
• H.265 (4kp60 decode), H264 (1080p60 decode, 1080p30 encode)
• OpenGL ES 3.1, Vulkan 1.0
• Micro-SD card slot for loading operating system and data storage
• 5V DC via USB-C connector (minimum 3A*)
• 5V DC via GPIO header (minimum 3A*)
• Power over Ethernet (PoE) enabled (requires separate PoE HAT)
• Operating temperature: 0 – 50 degrees C ambient.
  * A good quality 2.5A power supply can be used if downstream USB peripherals consume less than 500mA in total.

More info here.