Which Pi do I have?

To date, the Raspberry Pi foundation have released a various number of Raspberry Pi models, each have slight variations and improvements on the previous.

Raspberry Pi Model B (Revision 1)

Pi_B_Rev1

This is the first Raspberry Pi released February 2012

Features

  • Broadcom BCM2835 CPU, GPU and SDRAM
  • 256MB of RAM
  • Full size SD card
  • 2 USB ports
  • 10/100MBit/s Ethernet
  • HDMI Output
  • Composite Video
  • Analog Audio
  • 26 Pin GPIO Header

Raspberry Pi Model B (Revision 2)

Pi_B_Rev2

The second revision of the Raspberry Pi featuring improvements on the first such as mounting holes, change of GPIO 21 to 27, removal of poly fuses causing USB power problems and an additional J5 header for more GPIO pins.

Originally released with 256MB of RAM this was quickly doubled to 512MB of RAM.

Features

  • Broadcom BCM2835 CPU, GPU and SDRAM
  • 512MB of RAM (256MB on early models)
  • Full size SD card
  • 2 USB ports
  • 10/100MBit/s Ethernet
  • HDMI Output
  • Composite Video
  • Analog Audio
  • 26 Pin GPIO Header + 8 Pin J5 Header

Raspberry Pi Model A

Pi_A

A cheaper slimline version was shortly released after the revision 2 boasting a smaller profile with the lack of ethernet and a single USB. To help reduce the cost by $10 per unit, it kept the original 256MB of RAM, using the existing PCB with the lack of some components used by the B.

This version also featured reduced power consumption making it perfect for use in robotics or battery powered environments.

Features

  • Broadcom BCM2835 CPU, GPU and SDRAM
  • 256MB of RAM
  • Full size SD card
  • 1 USB port
  • HDMI Output
  • Composite Video
  • Analog Audio
  • 26 Pin GPIO Header + 8 Pin J5 Header

Raspberry Pi Model B+

Pi_B_Plus

The second major release of the Raspberry Pi, the B Plus fixes many problems experienced with the original B, such as reset when plugging in a high powered USB device, extra USBs, better analog audio and lower power consumption.

With the fixes it also brings new features such as a push and lock MicroSD card instead of the friction fit SD card, extra GPIO pins, new add on form factor known as HATs (Hardware Attached on Top) and a cleaner improved design.

Features

  • Broadcom BCM2835 CPU, GPU and SDRAM
  • 512MB of RAM
  • MicroSD card slot
  • 4 USB ports
  • HDMI Output
  • Combined Composite and Audio port
  • 40 Pin GPIO Header
  • HAT Compatible addons

Raspberry Pi Model A+

Pi_A_Plus

Since the launch of the B+, there was always talk of an A+ model. This version is the smallest and cheapest Raspberry Pi to date. It is the size of the HAT specification allowing it to be incorporated within the hardware design.

As with the original A, it lacks Ethernet network support, and features 1 USB but instead of reusing the B+ PCB a new smaller design – A smaller than credit card sized computer. It also sports even lower power comsumption, down to 100mAh making it perfect for very low powered projects.

Features

  • Broadcom BCM2835 CPU, GPU and SDRAM
  • 256MB of RAM
  • MicroSD card slot
  • 1 USB port
  • HDMI Output
  • Combined Composite and Audio port
  • 40 Pin GPIO Header
  • HAT Compatible addons

 

Raspberry Pi Model 2 B

RPF-RPI2B-1GB-7

The next major release of the Raspberry Pi, the 2 B whilst keeping the same form factor as the B+, it boasts an increase of up to 6 times the processing power over it’s older siblings. Now the 2 B has a quad core ARMv7 and 1 GB of RAM (still shared between application and graphics)

With the extra boost in power, a standard Raspbian image will boot in less than 30 seconds and browsing the internet is comparable to a full desktop computer whilst still only consuming the same amount of power as previous models. As it keeps the same form factor, the GPIO layout, HAT specification and micro SD card features are exactly the same.

Features

  • Broadcom BCM2836 Quad Core ARMv7 CPU, GPU and SDRAM
  • 1GB of RAM
  • MicroSD card slot
  • 4 USB ports
  • HDMI Output
  • Combined Composite and Audio port
  • 40 Pin GPIO Header
  • HAT Compatible addons