https://DevOpsCloud.io -- Cloud Monk Losang Jinpa, Ph.D., MCSE/MCT, GitOps DevOps Engineer

You can try to check which Pi you have by looking at the board layout and the components used, but this might not be very easy or reliable. Since the range of Pi models gives a significant difference in performance, this can be quite important, especially if not buying through the approved channels.

The reliable way to find out your board revision is to use the following command:

cat /proc/cpuinfo

 Hardware	: BCM2708
 Revision	: 0003

If you see a “1000” at the front of the Revision, e.g. 10000002 then it indicates<ref>http://www.raspberrypi.org/phpBB3/viewtopic.php?f=32&t=18133#p181069</ref> that your Raspberry Pi has been Overclocking | over-volted, and your board revision is simply the last 4 digits (i.e. 0002 in this example).

Another method to obtain just the revision ID (also removes any overvoltage mark):

 cat /proc/cpuinfo ]] | [[ grep 'Revision' ]] | [[ awk '{print $3}' ]] | [[ sed 's/^1000//'

 awk '/^Revision/ {sub("^1000", "", $3); print $3}' /proc/cpuinfo

 rev=$(awk '/^Revision/ { print $3 }' /proc/cpuinfo) && curl -L perturb.org/rpi?rev=$rev

<!– Much of the info in this table can be found at http://raspberryalphaomega.org.uk/?p=428 and

http://www.raspberrypi.org/phpBB3/viewtopic.php?p=281039&sid=c62f76dcc4871906db356d5dc1acfeb4#p281039 
See also http://www.raspberrypi.org/archives/1929 -->

{]] | border="1" ! Revision ! Release Date ! Model ! PCB Revision ! Memory ! Notes | - | Beta | Q1 2012 | B (Beta) | rpi_hardwarehistory | MB | Beta Board | - | 0002 | Q1 2012 | B | 1.0 | MB | rpi_hardwarehistory | - | 0003 | Q3 2012 | B (ECN0001) | 1.0 | MB | Fuses mod and D14 removed | - | 0004 | Q3 2012 | B | 2.0 | MB | (Mfg by Sony) | - | 0005 | Q4 2012 | B | 2.0 | MB | (Mfg by Qisda) | - | 0006 | Q4 2012 | B | 2.0 | MB | (Mfg by Egoman) | - | 0007 | Q1 2013 | A | 2.0 | MB | (Mfg by Egoman) | - | 0008 | Q1 2013 | A | 2.0 | MB | (Mfg by Sony) | - | 0009 | Q1 2013 | A | 2.0 | MB | (Mfg by Qisda) | - | 000d | Q4 2012 | B | 2.0 | MB | (Mfg by Egoman) | - | 000e | Q4 2012 | B | 2.0 | MB | (Mfg by Sony) | - | 000f | Q4 2012 | B | 2.0 | MB | (Mfg by Qisda) | - | 0010 | Q3 2014 | B+ | 1.0 | MB | (Mfg by Sony) | - | 0011 | Q2 2014 | Compute Module 1 | 1.0 | MB | (Mfg by Sony) | - | 0012 | Q4 2014 | A+ | 1.1 | MB | (Mfg by Sony) | - | 0013 | Q1 2015 | B+ | 1.2 | MB | (Mfg by Embest) | - | 0014 | Q2 2014 | Compute Module 1 | 1.0 | MB | (Mfg by Embest) | - | 0015 | rpi_hardwarehistory | A+ | 1.1 | MB | (Mfg by Embest) | - | a01040 | Unknown | 2 Model B | 1.0 | GB | (Mfg by Sony) | - | a01041 | Q1 2015 | 2 Model B | 1.1 | GB | (Mfg by Sony) | - | a21041 | Q1 2015 | 2 Model B | 1.1 | GB | (Mfg by Embest) | - | a22042 | Q3 2016 | 2 Model B (with BCM2837) | 1.2 | GB | (Mfg by Embest) | - | 900021 | Q3 2016 | A+ | 1.1 | MB | (Mfg by Sony) | - | 900032 | Q2 2016 | B+ | 1.2 | MB | (Mfg by Sony) | - | 900092 | Q4 2015 | Zero | 1.2 | MB | (Mfg by Sony) | - | 900093 | Q2 2016 | Zero | 1.3 | MB | (Mfg by Sony) | - | 920093 | Q4 2016 | Zero | 1.3 | MB | (Mfg by Embest) | - | 9000c1 | Q1 2017 | Zero W | 1.1 | MB | (Mfg by Sony) | - | a02082 | Q1 2016 | 3 Model B | 1.2 | GB | (Mfg by Sony) | - | a020a0 | Q1 2017 | Compute Module 3 (and CM3 Lite) | 1.0 | GB | (Mfg by Sony) | - | a22082 | Q1 2016 | 3 Model B | 1.2 | GB | (Mfg by Embest) | - | a32082 | Q4 2016 | 3 Model B | 1.2 | GB | (Mfg by Sony Japan) | - | a020d3 | Q1 2018 | 3 Model B+ | 1.3 | GB | (Mfg by Sony) | - | 9020e0 | Q4 2018 | 3 Model A+ | 1.0 | MB | (Mfg by Sony) | - | a02100 | Q1 2019 | Compute Module 3+ | 1.0 | GB | (Mfg by Sony) | - | a03111 | Q2 2019 | 4 Model B | 1.1 | GB | (Mfg by Sony) | - | b03111 | Q2 2019 | 4 Model B | 1.1 | GB | (Mfg by Sony) | - | c03111 | Q2 2019 | 4 Model B | 1.1 | GB | (Mfg by Sony) | //www.raspberrypi.org/phpBB3/viewtopic.php | 250px | thumb | right | A Chinese R-Pi (Model B Rev 2.0)

The vast majority of the Raspberry Pis produced have a <b>Green</b> PCB, but Pis produced by Egoman_Technology_Corp | Egoman_Technology_Corp (only available in the Far East) have a <b>Red</b><ref>http://www.raspberrypi.org/archives/3195</ref> PCB, and RS Components produced a limited edition of anniversary Pis in <b>Blue</b><ref>http://www.raspberrypi.org/archives/3422</ref>. The red-PCB model sold in the far east is functionally the same as the standard green-PCB model sold in the rest of the world, but it has not passed the compliance testing required for sale in those areas (for example, FCC in the USA, and CE Mark in the EU).

The following models can be considered current due to the large numbers that were shipped. They may be available from commercial suppliers or as pre-owned models.

Announced on 24th June 2019 (announcement). The Raspberry Pi 4 is a new Pi design, with ethernet + USB ports swapping positions from previous models. In addition, the 4 has three variants, only differing in amount of RAM: 1/2/4GB models, selling for $35/45/55.

| thumb | Raspberry Pi 4 Model B 4GB version

The Raspberry Pi 4 features:

• Broadcom BCM2711 SoC, with quad-core ARM Cortex-A72 1.5 GHz processor
• 1GB, 2GB, or 4GB of LPDDR4 SDRAM
• Full-throughput Gigabit Ethernet
• Dual-band 802.11ac wireless networking
• Bluetooth 5.0
• Two USB 3.0 and two USB 2.0 ports
• Dual monitor support, at resolutions up to 4K
• VideoCore VI graphics, supporting OpenGL ES 3.x
• 4Kp60 hardware decode of HEVC video
• Power over USB-C connector (v1.0 board has a faulty USB-C design which limits the cables that can be used to power the Pi (see here)).
• Complete compatibility with earlier Raspberry Pi products

Announced on “Pi Day”, 14th March 2018 (announcement). The Raspberry Pi 3 Model B+ is an incremental improvement over the previous Pi 3 Model B for the same US$35 price.

| 250px | thumbnail | right | Raspberry Pi 3 Model B+

The Raspberry Pi 3+ features:

• A 1.4GHz 64-bit quad-core ARM Cortex-A53 CPU
• Dual-band 802.11ac wireless LAN and Bluetooth 4.2
• Faster Ethernet (Gigabit Ethernet over USB 2.0)
• Power-over-Ethernet support (with separate PoE HAT)
• Improved PXE network and USB mass-storage booting
• Improved thermal management

Announced on 29th Feb 2016 (full announcement from the Raspberry Pi Foundation). The Raspberry Pi 3 retains the same US$35 price point of the Raspberry Pi 2 model B.

| 250px | thumbnail | right | Raspberry Pi 3 Model B

The Raspberry Pi 3 features:

• Broadcom BCM2837 SoC, with quad-core ARM Cortex-A53 1200 MHz processor
• VideoCore IV dual-core 400 MHz GPU
• 1 GB SDRAM - shared by the GPU and CPU
• MicroSD card slot for boot and storage
• 4 x USB 2.0 ports (via on-board 5 port hub)
• RJ45 10/100 MBit/s Ethernet port
• HDMI and Composite video, audio through TRRS jack
• 40 pin GPIO Interface connector
• CSI (camera) and DSI (display) connectors
• 4 squarely positioned mounting holes

Announced on 2nd Feb 2015 (full announcement from the Raspberry Pi Foundation). The Raspberry Pi 2 retains the same US$35 price point of the model B+.

| 250px | thumbnail | right | Raspberry Pi 2 Model B

The Raspberry Pi 2 features:

• Broadcom BCM2836 SoC, with quad-core ARM Cortex-A7 900 MHz processor
• VideoCore IV dual-core 250 MHz GPU
• 1 GB SDRAM - shared by the GPU and CPU
• MicroSD card slot for boot and storage
• 4 x USB 2.0 ports (via on-board 5 port hub)
• RJ45 10/100 MBit/s Ethernet port
• HDMI and Composite video, audio through TRRS jack
• 40 pin GPIO Interface connector
• CSI (camera) and DSI (display) connectors
• 4 squarely positioned mounting holes

Announced on 14th July 2014 (full announcement from the Raspberry Pi Foundation).

| 250px | thumb | right | The RPi full production board (Model B+)

The Raspberry Pi B+ features:

• Broadcom BCM2835 SoC, with ARM1176JZF-S 700 MHz processor
• VideoCore IV dual-core 250 MHz GPU
• 512 MB SDRAM - shared by the GPU and CPU
• MicroSD card slot for boot and storage
• 4 x USB 2.0 ports (via on-board 5 port hub)
• RJ45 10/100 MBit/s Ethernet port
• HDMI and Composite video, audio through TRRS jack
• 40 pin GPIO, I2C, SPI, UART interface connector
• CSI (camera) and DSI (display) connectors
• 4 squarely positioned mounting holes

| 250px | thumb | right | The RPi compute module Announced on 7th Apr 2014 Full announcement from the Raspberry Pi Foundation.

The compute module contains the guts of a Raspberry Pi (the BCM2835 processor and 512&nbsp;MB of RAM) as well as a 4&nbsp;GB eMMC Flash device. This is integrated on to a small 67.6x30mm board which fits into a standard DDR2 SODIMM connector.

• As of Feb 2013, available from distributors in Europe but not North America
• Board has 256&nbsp;MB of RAM rather than the originally planned 128&nbsp;MB<ref name=“postSale”>Post-Launch - And breathe…</ref>
• The Foundation produced a small Beta batch before handing manufacturing over to RS and Farnell
• The Model A boards actually use the identical Revision2.0 PCB as Model B boards, just with a different selection of components fitted (full details available from the Schematic_.2F_Layout | schematics). AFAIK no Model A boards using the Revision1.0 PCBs were ever publicly available (or indeed ever made?).

| 250px | thumb | right | The RPi full production board (Model B Rev 2.0)

• Announced: April 2012, first orders sent out June 2012.
• Manufacturing and Orders will be made through RS and Farnell
• This means a much higher volume of units will be produced and made available.
• Additional detail is available about the manufacturing and distribution agreement here video interview between Eben Upton and SlashDot here (28/02/12).
• Announced: September 2012, Raspberry Pi Model B Rev 2.0 is now manufactured at Sony's manufacturing plant on Pencoed, South Wales. Full announcement from the Raspberry Pi Foundation, Element14 announcement on Raspberry Pi discussion board.

These are unlikely to be readily available, and would then be in demand by collectors.

• Announced: 29th Feb 2012 - Start of Sale Only<ref name=“postSale”/>
• Credit-card Format
• Initial 10k Batch (All Model B's) Manufactured in China (Jan/Feb 2012)<ref name=“firstProduction” >We’ve started manufacture!</ref>
• Should look identical to the Raspberry Pi Beta Board below (except different SDCard holder).
• The board has a yellow RCA connector, rather than the black one used in the Beta's.
• Nokia/Qt Development group has donated vouchers for 400 RPi units for developers<ref name=“nokiaDonate”>Nokia has Raspberry Pi vouchers for 400 Qt developers</ref>
• The batch was delayed several weeks due to the RJ45 network connector being substituted for the wrong part<ref>Manufacturing Hiccup</ref> and also so the board could undergo compliance testing<ref>Compliance testing</ref>

• Announced: December 2011<ref name=“#Beta”>Populated boards: an update on where we are</ref>
• Credit-Card Format
• Manufactured in UK
• Produced 100<ref name=“betapcb”>We have PCBs! BETA</ref> PCBs
• Characteristic feature of hand-modded correction to PCB <ref name=“betaError”>(hand-mod) More on the beta boards</ref>
• See the blog post which includes a video explaining how the production units will differ from the beta boards.

• Pre-production board (beta board) PCB, topside
• Pre-production board (beta board) PCB, underside
• Pre-production board vs credit-card

10 of the completed Model B boards were auctioned on eBay (Started on 1st Jan 2012) <ref name=“betaebay”>We’re auctioning ten beta Raspberry Pis!</ref>) {]] | border="1" | SerialNo | 1 | 2 | 3 | 4 | 5 | 6 | 7<ref name="#7Donated"/> | 8<ref name="#8PaulMaunders"/> | 9 | 10 | - | Date | 11-Jan-2012 | 11-Jan-2012 | 10-Jan-2012 | 10-Jan-2012 | 09-Jan-2012 | 09-Jan-2012 | 08-Jan-2012 | 08-Jan-2012 | 07-Jan-2012 | 07-Jan-2012 | - | Sold For | £3,500 | £2,150 | £2,257 | £1,550 | £1,040 | £1,000 | £989 | £1,020 | £930 | £1,900 | 7 was anonymously (and generously) donated to [http://www.computinghistory.org.uk/ Centre for Computing History]<ref name="#7Donated">[http://www.raspberrypi.org/archives/503 Beta board bought by anonymous bidder and donated to museum]</ref> (also spotted [http://twitpic.com/86trra here..])! Board #8 Owned by Tech Blogger, Paul Maunders, see his [http://www.pyrosoft.co.uk/blog blog] for details<ref name="#8PaulMaunders">[http://www.pyrosoft.co.uk/blog/2012/01/13/raspberry-pi-8-first-photoshoot/ Paul Maunders - Raspberry Pi #8 First Photoshoot]</ref> ===Raspberry Pi Alpha Board=== [[File:RPi-alpha.jpg | 250px | thumb | right | RPi Alpha Board

• Announced: August 2011<ref name=“#Alpha”>The alpha boards are here!</ref>
• Large Format for debugging (Model B)
• Populated with headers for GPIO, JTAG, DSI, CSI, as well as switches and LEDs for I/O testing.

• Alpha prototype board, underside

| 250px | thumb | right | RPi USB Prototype Board

• Announced: May 2011
• The “Computer On A USB Stick” Format
• Included built-in camera
• HDMI one end and single USB the other
• Introduced the RPi Foundation to the world (any earlier links appreciated), featured by BBC Online Video.
• Known internally at Broadcom as the <b>MicroDB</b> <ref>http://www.raspberrypi.org/archives/3375</ref> <ref>http://www.raspberrypi.org/archives/3376</ref>

| 250px | thumb | right | Raspberry Pi Concept 2006 edition

• Vero-board Prototype & PCB Version
• Atmel ATmega644 microcontroller clocked at 22.1&nbsp;MHz<ref name=“2006ed”>Raspberry Pi – 2006 edition</ref>

• BBC iClick's Peter Price asks whether a £15 computer can solve the programming gap (6 minutes, 3 June 2011)
• Raspberry Pi's David Braben talks to BBC's Rory Cellan-Jones (2:28 minutes, 5 May 2011)
• Raspberry Pi community tutorials on YouTube

• Podcast of a phone interview with Eben about the project and the motivations behind it (15 minutes long.) (3 June 2011) Transcription here.

<references/>