Abaixo, são apresentadas as informações do microcontrolador ESP32 VS ESP8266:

Comparison ESP32 ESP8266
Clock Frequency 160 or 240 MHz 80 MHz
Bluetooth BLE No
Hall Sensor Yes No
Camera Interface No No
Temperature Sensor Yes No
Touch Sensor 10 No
Security Security Boot flash encryption. OTP 1024-bit No
Low Power Consumption 10uA deep sensor 20uA
Temperature Yes No
Co-Processor ULP No
Total GPIO 39 17
Crypto RSA, RNG, ECC, SHA-2, AES No
SPI 4 2
USB OTG No No
Microcontroller Single or dual-core 32-bit LX6 Xtensa Single core 32-bit L106 Xtensa
ROM 448 KB No
CAN 2 No
Ethernet 10/100 Mbps No
External SPIRAM Up to 16 MB Up to 16 MB