Board Technical Specifications Comparison

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Wandboard Wandboard Dual vs. Espressif ESP32-S2-Saola vs. Optimus Embedded Systems Prime

	× Wandboard Dual	× ESP32-S2-Saola	× Prime
Manufacturer	Wandboard	Espressif	Optimus Embedded Systems
Price	$ 99.0	$ 8.0	$ 125.0
SoC	NXP i.MX6 Dual Lite	Espressif ESP32-S2 (WROVER or WROOM)	Rockchip RK3399
CPU	2× ARM Cortex-A9 @ 1.0 Ghz	1× Tensilica Xtensa LX7 (RISC) @ 240 Mhz	2× ARM Cortex-A72 @ 2.0 Ghz 4× ARM Cortex-A53 @ 1.5 Ghz
GPU	Vivante GC 880 + Vivante GC 320	-	Mali-T860 MP4
RAM	1.0 GiB	2.0 MiB	4.0 GiB DDR4
eMMC	1 × soldered	1 × soldered	1 × soldered
USB	1 × host port 1 of which support USB-OTG	1 of which support USB-OTG	2 × host ports 1 of which support USB-OTG
Ethernet	1× 1 Gbps		1× 1 Gbps wake on lan supported
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	On-board Wi-Fi without external antenna 2.4Ghz b/g/n 5Ghz a/n/ac
Bluetooth	onboard	-	onboard
Modem	-	-	onboard
Camera	up to 1 x inputs	up to 1 x inputs	up to 3 x inputs
Audio	1 × outputs 1 × line-in 1 × mic-in 1 × spdif-out	-	1 × outputs 1 × line-in 1 × mic-in 1 × I2S
GPIO	10	43	40
PWM	-	8	-
ADC	-	2	-
I2C	1	2	2
SPI	1	4	2
UART	1	2	1
Pin header	-	-	HAT (Raspberry Pi)
Dimensions	95 mm x 95 mm x 22 mm	54 mm x 28 mm	65 mm x 85 mm x 2 mm
Temperature	-	-	-40.0°C - 85.0°C
Software	Linux: True Android: 5.0	-	Linux: True Android: Android Windows: Embedded ARM