Raspberry Pi 4 Vs. Raspberry Pi 3 Model B+ : What's The Difference?

The affordable and open-source Raspberry Pi has become a staple in every enthusiast's tool kit. So what's the difference between the Pi 3 Model B+ and the Pi 4?
The affordable and open-source Raspberry Pi has become a staple in every enthusiast's tool kit. So what's the difference between the Pi 3 Model B+ and the Pi 4?

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