docs/Hardware.md
| Device | Chipset | Architecture | Clock | Flash | RAM |
|---|---|---|---|---|---|
| Espressif ESP32 | Xtensa LX6 <sup>⚠️</sup> | 240MHz | 4 MB | 520KB | |
| Particle Argon, Boron, Xenon | nRF52840 | Cortex-M4F | 64MHz | 1 MB | 256KB |
| Particle Photon, Electron | STM32F205 | Cortex-M3 | 120Mhz | 1 MB | 128KB |
| Sparkfun Photon RedBoard | STM32F205 | Cortex-M3 | 120Mhz | 1 MB | 128KB |
| Air602 | WM W600 | Cortex-M3 | 80MHz | 1 MB | 160KB+128KB |
| Adafruit PyBadge | ATSAMD51J19 | Cortex-M4F | 120MHz | 512KB | 192KB |
| Realtek RTL8711 | Cortex-M3 | 166MHz | 2 MB | 2 MB+512KB | |
| Nordic nRF52840 | Cortex-M4F | 64MHz | 1 MB | 256KB | |
| Nordic nRF52833 | Cortex-M4F | 64MHz | 512KB | 128KB | |
| P-Nucleo WB55RG | STM32WB55RG | Cortex-M4F | 64MHz | 1 MB | 256KB |
| Teensy 4.0 | NXP iMXRT1062 | Cortex-M7 | 600MHz | 2 MB | 1 MB |
| Teensy 3.5 | MK64FX512 | Cortex-M4F | 120MHz | 512KB | 192KB |
| MXChip AZ3166 | EMW3166 | Cortex-M4 | 100MHz | 1 MB+2 MB | 256KB |
| Arduino Due | AT91SAM3X8E | Cortex-M3 | 84MHz | 512KB | 96KB |
| Sipeed MAIX | Kendryte K210 | RV64IMAFDC | 400MHz | 16 MB | 8 MB |
| Fomu (soft CPU) | Lattice ICE40UP5K | RV32I | 12MHz | 2 MB | 128KB |
The following devices can run Wasm3, however they cannot afford to allocate even a single Linear Memory page (64KB).
This means memoryLimit should be set to the actual amount of RAM available, and that in turn usually breaks the allocator of the hosted Wasm application (which still assumes the page is 64KB and performs OOB access).
| Device | Chipset | Architecture | Clock | Flash | RAM |
|---|---|---|---|---|---|
| Espressif ESP8266 | Xtensa L106 <sup>⚠️</sup> | 160MHz | 4 MB | ~50KB (available) | |
| Teensy 3.1/3.2 | NXP MK20DX256 | Cortex-M4 | 72MHz | 288KB | 64KB |
| Blue Pill | STM32F103 | Cortex-M3 | 72MHz | 64KB | 20KB |
| Arduino MKR* | SAMD21 | Cortex-M0+ <sup>⚠️</sup> | 48MHz | 256KB | 32KB |
| Arduino 101 | Intel Curie | ARC32 | 32MHz | 196KB | 24KB |
| SiFive HiFive1 | Freedom E310 | RV32IMAC | 320MHz | 16 MB | 16KB |
| Nordic nRF52832 | Cortex-M4F | 64MHz | 256/512KB | 32/64KB | |
| Nordic nRF51822 | Cortex-M0 <sup>⚠️</sup> | 16MHz | 128/256KB | 16/32KB | |
| Wicked Device WildFire | ATmega1284 | 8-bit AVR <sup>⚠️</sup> | 20MHz | 128KB | 16KB |
⚠️ This architecture/compiler currently fails to perform TCO (Tail Call Optimization/Elimination), which leads to sub-optimal interpreter behaviour (intense native stack usage, lower performance).
There are plans to improve this in future 🦄.