Raspberry Pi 4 Model B 4GB RAM
Raspberry Pi 4 Model B comes with various upgrades and adjustments which distinctively differentiate this board from the previous Raspberry Pi SBCs. The main thing that makes Raspberry Pi 4 different from its predecessors is that it supports some of the functions you generally associate with Desktops. For example, when using Raspberry Pi 4 Model B, you can create presentations, open multiple tabs when browsing the internet, edit documents, and juggle spreadsheets. This is the first time that Raspberry Pi Foundation has introduced an SBC that lets you enjoy the same experience you generally expect from a desktop. The advantage of using a Mini PC instead of a bigger desktop is that it consumes far less power than a desktop consumes.
Specs Raspberry Pi 4 Model B with 4GB RAM
- Broadcom 64-bit SoC (BCM2711) | Cortex-A72 ARM v8 | 1.5GHz | Quad-Core
- Memory: 4GB SDRAM | LPDDR4-3200
- IEEE 802.11 ac Wireless | 2.4GHz and 5.0GHz
- Bluetooth 5.0
- Gigabit (BLE) Ethernet
- 2x USB 3.0 Ports
- 2x USB 2.0 Ports
- 40-Pin GPIO Header (Raspberry Pi Standard) | Compatible with the older Raspberry Pi versions (full-backward compatibility)
- 2-Lane Display Port: MIP DSI
- 2-Lane Camera Port: MIPI SCI
- OpenGL ES 3.0 supported
- 4-Pole Port for Stereo Audio and Composite Video
- 2x 4Kp60 supportive Micro-HDMI ports
- 265 4Kp60 Decode
- H264 1080p60 Decode | 1080p30 Encode
- MicroSD Card Slot (supports Loading of Operating System and data storage)
- 5V DC compatible (minimum 3A) via GPIO Header
- 5V DC compatible (Minimum 3A) via USB-C (Previous Raspberry Pi boards had MicroUSB)
- PoE enabled (Works with separate PoE HAT. The positioning of the PoE is same as it was on the previous boards so it supports the PoE HAT)
- From 0oC to 50oC Operating Temperature
- If the downstream USB peripherals are consuming less than 500mA (all ports) then you can use a reliable 2.5A power supply
- Weight: 1.6 ounces / 45 grams
- Dimensions: Standard Raspberry Pi board size, i.e. 85.6mm x 56.6mm x 17mm
What is Different with Raspberry Pi 4 Model B
Since the release of Raspberry Pi 1 B+ in 2014, the Raspberry Pi Foundation didn’t change the appearance of these SBCs. A quick look at Raspberry Pi 4 doesn’t let you notice too many changes. But if you concentrate for a few seconds, you’ll notice that the design of this board is slightly different from that of the previous boards.
MicroUSB replaced by USB-C
The power connector now uses USB-C instead of MicroUSB port. This upgrade ensures the supply of 500mA additional current. This additional current feeds the downstream USB devices with 1.2A even when the load on CPU is high.
Dual-Display Port (Type-D Micro HDMI Connectors)
Previously, Raspberry Pi SBCs carried Type-A (full-size) HDMI connector. But Raspberry Pi 4 Model B has 2x Type-D Micro HDMI connectors.
Ethernet moves from bottom right to top right
The positioning on the Gigabit Ethernet Magjack has been reset. Unlike the previous boards, Raspberry Pi 4 holds the Ethernet at the top-right and this adjustment simplifies PCB routing.
Raspberry Pi 4 is compatible with the PoE HAT because the position of the PoE connector remains the same as it was on the older Raspberry Pi versions.
4Gbps Bandwidth for 4x USB Ports
USB ports are supported by the external VLI controller. The (Express Gen 2-Lane) single PCI is connected to the USB. The ports (2x USB 2.0 and 2x USB 3.0) share 4Gbps bandwidth.