You explored the infinite world of Raspberry PI projects (some available here) and now you want to buy your first raspberry PI card. So, you google or search your favourite e-commerce website and discover that there are different models. And now you ask youself, what are the differences? Don’t worry, you can find below a simplified table comparing main features of latest RPI models!
This table summarizes what you can find in official Raspberry Pi Foundation Docs.
|Product||PI 4 Model B||Pi 3 Model B+||Pi 3 Model A+||Pi Zero W|
|RAM||1 to 4 GB||1GB||512MB||512MB|
|USB Ports||2 × USB 3.0 + 2 × USB 2.0 ports||4 × USB 2.0 ports||Single USB 2.0 ports||Micro USB|
|Recommended PSU current capacity||3A||2.5A||2.5A||1.2A|
|Maximum total USB peripheral current draw||1.2A||1.2A||Limited by PSU, board, and connector ratings only.||Limited by PSU, board, and connector ratings only.|
|Typical bare-board active current consumption||500mA||500mA||350mA||150mA|
|Video&Audio||2 × micro-HDMI ports (up to 4kp60 supported), 2-lane MIPI DSI display port, 4-pole stereo audio and composite video port||1 × full size HDMI, MIPI DSI display port, 4 pole stereo output and composite video port||Full-size HDMI, 4-pole stereo output and composite video port||1080P HD video & stereo audio via mini-HDMI connector|
|Storage||MicroSD card||MicroSD card||MicroSD card||MicroSD card|
|GPIO||Raspberry Pi standard 40 pin GPIO header||Extended 40-pin GPIO header||Extended 40-pin GPIO header||40-pin GPIO, unpopulated|
Now enjoy your first Rapsbeyry PI!