Documentation - Sipeed Wiki

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Maix AI Vision

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Maix Series Product Comparison

Parameter	Maix-I	Maix-II	Maix-III	Maix-IV
CPU	K210: Dual core 64 bit RISC-V@400MHz	V831: Cortex-A7@800MHz	AX620A: Cortex-A7x4@1.0GHz	AX650N: Cortex-A55x8@1.7GHz
memory	SIP 8MB SRAM	SIP 64MB DDR2	2GB LPDDR4X 3733MHz	8GB
NPU	0.25Tops@INT8，limited support CNN operations	0.2Tops@INT8，limited support CNN operations	3.6Tops@INT8，support common CNN model	10Tops@INT8，support common CNN and transformer model
storage	onboard 16MB Flash，support SPI TF card	onboard Flash or TF card	EMMC or TF card	EMMC or TF card
software support	CSDK, MaixPy	CSDK, MaixPy3	CSDK	CSDK
operating system	RTOS	Tina Linux	Linux	Linux
typical peripherals	UART/I2C/SPI/PWM/FPIOA/GPIO/FFT/I2S	USB/UART/I2C/SPI/ PWM/GPIO/ADC	USB/UART/I2C/SPI/ PWM/GPIO/ADC	USB/UART/I2C/SPI/ PWM/GPIO/ADC
MaixHub	support：ok	support：good	support：ok	support：ok

Tang FPGA Series

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Tang Series Main Products Comparison

Parameter	Mega 138K	Primer 25K	Primer 20K	Nano 20K	Nano 9K	Nano 4K
Chip	GW5AST-138	GW5A-25	GW2A-18	GW2AR-18	GW1NR-9	GW1NSR-4C
LUT	138240	23040	20736	20736	8640	4608
FF	138240	23040	15552	15552	6480	4608
SSRAM(Kbits)	1080	180	41	41	17
BSRAM(Kbits)	6120	1008	828	828	468	180
RAM	Onboard 4Gb DDR3 SDRAM * 2		Onboard 1Gb DDR3 SDRAM	Inchip 64Mb SDR SDRAM	Inchip 64Mb PSRAM	Inchip 64Mb HyperRAM
Embedded CPU	RiscV AE350_SOC					Cortex-M3
storage	Onboard 32Mb Flash * 2	Onboard 32Mb Flash	Onboard 32Mb Flash	Onboard 32Mb Flash	Inchip 608Kb Flash Onboard 32Mb Flash	Inchip 256Kb Flash Onboard 32Mb Flash
Features	Inchip 12.5G Transceivers Support PCIE Interface Support SFP+ Transmission	2.5G MIPI DPHY RX/TX inside Support PMOD,64MByte SDRAM Module Support USB Joystick	Rich peripherals, HDMI/Ethernet/USB	for RetroGame ~	for RISCV softcore	GOAI~

Linux SBC Series

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Lichee SBC Series Product Comparison

Parameter	LicheePi 4A	LicheeRV	LicheePi Zero	LicheePi Nano
CPU	TH1520: 4xC910@1.85GHz RV64GCV	D1: C906@1.0GHz	V3S: Cortex-A7@1.2GHz	F1C100s: ARM9@408MHz
memory	8GB/16GB 64bits LPDDR4X	512MB/1GB DDR3, 792MHz	64MB DDR2	32MB DDR
storage	reserved EMMC/TF card	reserved SD-NAND/TF card	reserved SOP8 SPI Flash/TF card	onboard 16MB NOR Flash, TF card
GPU and display	IMG BXM-4-64, OpenCL 1.1/1.2/2.0 OpenGL ES 3.0/3.1/3.2 Vulkan 1.1/1.2, HDMI2.0/4-lane MIPI DSI · Android NN HAL	no GPU, MIPI 4-lane MIPI DSI/ RGB888/MCUI80/SPI	no GPU, 40P RGB LCD	no GPU, 40P RGB LCD
codec	H.265 4K@40FPS/H.264 4K@40FPS/VP9/8/7/6/AVS/AVS+/AVS2.0/VC1/MPEG4 decode H.264 4K@40FPS/H.265 4K@40FPS encode	H.264 1080p@30FPS/MJPEG 1080@30FPS decode 1080p@40FPS/1080p@30FPS+VGA@30FPS H.264 encode	H.264 1280x720@30FPS/MPEG1/2/4 1280x720@30FPS decode MJPEG 1280x720@30FPS/JPEG 8192x8192 encode	H.264 1280x720@30FPS decode MPEG1/2/4 1280x720@30FPS decode MJPEG 1280x720@30 FPS decode JPEG 8192x8192 encode
operating system	mainline Linux/Android/Deepin/Ubuntu/OpenWrt etc.	Tina Linux/Debian/Ubuntu/RTOS	Linux	4.19 mainline Linux/3.10 BSP Linux/Xboot/RT-Thread
NPU	4Tops@INT8 1GHz	no	no	no
typical peripherals	USB3.0x4/UART/I2C/SPI/PWM/GPIO/ADC 2x2-lane MIPI CSI/1x4-lane MIPI CSI/1000M Ethx2	OTG USB/UART/I2C/SPI/PWM/GPIO/TWI/ADC	OTG USBx1/UARTx3/SPIx1/PWMx2/ GPIO/LRADCx1/SDIOx2/TWI/I2Cx2/100M Eth+EPHY/MIPI CSIx1	OTG USBx1/UARTx3/SPIx2/PWMx2/ GPIO/LRADCx1/SDIO/TWIx3/TV out