Which Raspberry Pi do I have?

There are a total of 4 different versions of the Raspberry Pi 4 released. Namely the 1GB, 2GB, 4GB and 8GB RAM. The 1GB RAM variant is no longer produced. In principle all boards are almost identical, but if you now have different types it is useful to know which has more or less RAM than the other.

The Raspberry Pi 4 1GB RAM can be recognized by the code a03111.

The Raspberry Pi 4 2GB RAM can be recognized by the D9WHZ RAM chip.

The Raspberry Pi 4 4GB RAM can be recognized by the D9WHV RAM chip.

The Raspberry Pi 4 8GB RAM can be recognized by the D9ZCL RAM chip.

There are 2 models of the Raspberry Pi 3. The Raspberry Pi 3 Model B and the 3 Model B+ . The 3B+ is the renewed and improved version of the 3B.

Besides the exact type printed on the top of the Raspberry Pi you can also easily recognize it by the WiFi chip. This is located at the top left of the 3B+ and can be recognized by the raspberry.

There are two versions of the Raspberry Pi Zero released. The Zero and the Zero W. The only difference is actually the connectivity. The Zero W can connect via WiFi and Bluetooth while the Zero can't do either. Since both boards are almost identical it can be hard to see the difference. The biggest difference is that the Zero has HDMI next to the HDMI port. This is not the case with the Zero W.
Another but slightly trickier way is to look at the current inductor. On the Zero W there is a current inductor just above the camera port with the text 4R7. This is not on the Zero .

There are 4 other types of Raspberry Pi boards. Because these are already quite outdated, we will not go into much more detail. However, we will show below with 4 images what is what.