Raspberry Pi 3

Raspberry Pi 3

Raspberry Pi 3


In this article I explain the components and technical data of the Raspberry Pi 3.

Raspberry Pi 3 serial interface


On the board there are two so called serial interfaces. The first one is for a LCD display and the second one is for the official Raspberry Pi camera.
System-on-a-Chip (SoC)

Apart from that, there is a chip from Broadcom on the board, a so-called System-on-a-Chip. A system-on-a-chip is a chip with all the necessary modules for a computer, such as the main processor, RAM, sound and graphics processor. All these modules are combined on this one chip.

Processor (CPU)


The processor is 64-bit with four cores and operates at 1.4 gigahertz per core up to 70 degrees. Depending on the operating temperature, the clock rate is automatically set further down. Up to 80 degrees it is then only 1.2 gigahertz per processor core. Above 80 degrees, the clock rate automatically decreases further and further. 

Working memory (RAM)


The working memory (RAM), which also sits on the SoC, is 1 gigabyte and the graphics processor works with 400 megahertz per second. Furthermore, an HDMI output is installed, which can render a resolution of 1080p in FullHD.

Composite audio & video connection


Furthermore, the Raspberry Pi 3B+ has a 3.5 millimeter audio port, which is also a composite video port. If you can't use the HDMI output, this is an alternative way to output the video signal via this video output. 

Micro-USB power connector


At the front of the Raspberry Pi 3B+ is the Micro-USB connector for AC power and 5 volts. As mentioned above, it is recommended to use the official Raspberry Pi power supply. 

40 PIN Connector


The sensors and modules can be connected to the 40 PIN input and output connectors to work with them on the hardware side. On the chip with the raspberry is still the WiFi chip with the standard 802.11ac. Bluetooth version 4.2 is also integrated on the same chip. 

USB ports & network connection


The Raspberry Pi 3B+ has four USB 2.0 ports and a 1Gigabit network port next to it. However, the network port is internally connected via USB and thus only has a real speed of 300 MBit per second.

As for the network port, it is worth mentioning that it is a Power-over-Ethernet capable port. This means that power can be supplied via this port and the Raspberry Pi can be started remotely via this port.
Micro-SD connector

Other than that, there is also a micro-SD card slot installed under the motherboard, which serves as hard drive storage. By the way, the Raspberry Pi 3B+ has a power consumption of about 3-5 watts under full load. That's roughly 7-8 Euros of electricity costs per year if it would run every day. So the operating costs are very low. So much for the technical data of the Raspberry Pi 3B+. 

Raspberry Pi + accessories overview:


Do you want to buy a Raspberry Pi? Then I have put together a list of all the components you need to get started with the Raspberry Pi.

Raspberry Pi 4 with 4GB RAM (Link)*
Raspberry Pi 4 with 2GB RAM (Link)*
Raspberry Pi 4 with 1GB RAM (Link)*
Raspberry Pi 3B+ with 1GB RAM (Link)*
Raspberry Pi Zero with 1GB RAM incl. WIFi (Link)*

8GB SD card (Link)*
16GB SD card (Link)*
32GB SD card (Link)*
64GB SD card (Link)*
128GB SD card (Link)*

Raspberry Pi camera module without infrared (link)*
Raspberry Pi camera module with infrared (link)*

37 Sensors Starter Kit from SunFounder (link)*
39 Sensors Kit from Quimat (link)*

Official Raspberry Pi power supply (link)*

Raspberry Pi 4 Starter Kit (link)*
Raspberry Pi 3B+ Starter Kit (link)*


* = Affiliate Link (raspi-config.com) is participant of the affiliate program of Amazon USA, which is designed to provide a commission for websites to earn advertising fees by placing ads and links to Amazon.com).

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