ESP32 Forum

Let's say I want to design an ESP32-S3 board with 8MB of flash and 8MB of PSRAM. I see that there are a few possible ways I could do this: I could use an ESP32-S3FN8 with 8MB of in-package flash and add an external 8MB PSRAM chip, or I could use an ESP32-S3R8(V) with 8MB of in-package PSRAM and add an external 8MB flash chip. What are the relative advantages and drawbacks of doing it each way, if any?

It looks like I could even use the base ESP32-S3 (with no built-in flash or PSRAM) and add both an 8MB flash chip and an 8MB PSRAM chip. Is there any reason I'd want to do it that way?

There's not much here, any way is good. A few things to watch out for that I can come up with:
- You may want to use octal flash or PSRAM. Those tend to have a more complicated package (BGA), so you may want to have that on-package in the ESP32S3 to save you the hassle.
- Board space. External chips will always take up more space.