Board Technical Specifications Comparison

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Espressif ESP32-S2-Saola vs. FriendlyElec NanoPi M4

	× ESP32-S2-Saola	× NanoPi M4
Manufacturer	Espressif	FriendlyElec
Price	$ 8.0	$ 65.0
SoC	Espressif ESP32-S2 (WROVER or WROOM)	Rockchip RK3399
CPU	1× Tensilica Xtensa LX7 (RISC) @ 240 Mhz	2× ARM Cortex-A72 @ 2.0 Ghz 4× ARM Cortex-A53 @ 1.5 Ghz
GPU	-	Mali-T860 MP4
RAM	2.0 MiB	2.0 GiB DDR3
eMMC	1 × soldered	1 × soldered
USB	1 of which support USB-OTG	4 × host ports 1 of which support USB-OTG
Ethernet		1× 1 Gbps
Wi-Fi	On-board Wi-Fi without external antenna 2.4Ghz b/g/n	On-board Wi-Fi without external antenna 2.4Ghz b/g/n 5Ghz a/n/ac
Bluetooth	-	onboard
Camera	up to 1 x inputs	up to 2 x inputs
Audio	-	1 × outputs 1 × spdif-out 1 × I2S
GPIO	43	40
PWM	8	1
ADC	2	-
I2C	2	2
SPI	4	3
UART	2	1
Pin header	-	HAT (Raspberry Pi)
Dimensions	54 mm x 28 mm	85 mm x 56 mm
Temperature	-	-20.0°C - 80.0°C
Software	-	Linux: True Android: 7.1