The Raspberry Pi 4 requires a minimum of 3A, while you can get away with only 2.5A for the Raspberry Pi 3. When it comes to the operating temperature, however, they have a similar maximum of 50 ...

The Raspberry Pi 4 B offers 802.11ac Wi-Fi, the same as the Raspberry Pi 3 B+, but sports Bluetooth 5.0, compared to Bluetooth 4.2 on the Raspberry Pi 3 Model B+.

We can’t wait to see what you’ll do with them. Main image remixed from Raspberry Pi 4 GPIO pinout diagram by [Les Pounder].