GreenWaves Technologies
512 KB L2 SRAM with 9 RISC-V cores and hardware convolution engine. Purpose-designed for edge AI workloads — 8-core parallel cluster enables CNN inference at ultra-low power.
| Processor | 9-core RISC-V (1 FC + 8 Cluster) @ 250 MHz |
| Cores | 9 |
| Clock | 250 MHz |
| SRAM | 512 KB |
| Flash | 8 MB |
| FPU | none |
| Connectivity | |
| Key Features | Purpose-built for edge AI inference, 8-core compute cluster for parallel processing, Hardware convolution engine (HW CE), Ultra-low power (few mW during inference), L2 memory: 512 KB, L1 cluster: 64 KB shared, External memory via HyperBus/QSPI |
| Price | $5–$12 (chip), $30–$80 (dev board) |
1 dev boards available across PlatformIO registries.
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EFR32MG
Silicon Labs
256 KB RAM · 40 MHz
ESP32
Espressif
520 KB RAM · 240 MHz
ESP32-C3
Espressif
400 KB RAM · 160 MHz
ESP32-C6
Espressif
512 KB RAM · 160 MHz
ESP32-S2
Espressif
320 KB RAM · 240 MHz
ESP32-S3
Espressif
512 KB RAM · 240 MHz
i.MX RT1052
NXP
512 KB RAM · 600 MHz
i.MX RT1062
NXP
1024 KB RAM · 600 MHz
i.MX RT1064
NXP
1024 KB RAM · 600 MHz
LPC55xx
NXP
320 KB RAM · 150 MHz
nRF52832
Nordic Semiconductor
64 KB RAM · 64 MHz
nRF52833
Nordic Semiconductor
128 KB RAM · 64 MHz
nRF52840
Nordic Semiconductor
256 KB RAM · 64 MHz
RA6M5
Renesas
512 KB RAM · 200 MHz
SAMD51
Microchip
256 KB RAM · 120 MHz
SAME51
Microchip
256 KB RAM · 120 MHz
STM32F3
STMicroelectronics
80 KB RAM · 72 MHz
STM32F4
STMicroelectronics
192 KB RAM · 168 MHz
STM32F7
STMicroelectronics
512 KB RAM · 216 MHz
STM32G4
STMicroelectronics
128 KB RAM · 170 MHz
STM32H5
STMicroelectronics
640 KB RAM · 250 MHz
STM32H7
STMicroelectronics
1024 KB RAM · 480 MHz
STM32L4
STMicroelectronics
128 KB RAM · 80 MHz
STM32L5
STMicroelectronics
256 KB RAM · 110 MHz
STM32U5
STMicroelectronics
786 KB RAM · 160 MHz
STM32WB
STMicroelectronics
256 KB RAM · 64 MHz
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