Upgrade ESP32 board without psRAM with 4MB/8MB SPIRAM
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Available SRAM in ESP-WROOM32 - Development Platforms - PlatformIO Community
Esp32 Development Board, For Wifi, Upto 512 Kb Ram
How to Secure ESP32 Firmware and Flash Memory on ESP-IDF Framework
HEAP][v4.4.3][ESP32-S3] only 225KB of the 520KB SRAM is available for the heap. Why so little? (IDFGH-8857) · Issue #10281 · espressif/esp-idf · GitHub