ESP32-C6-WROOM-1 vs ESP32-S3-WROOM-1
ESP32-C6-WROOM-1
WROOM · ESP32-C6 · Active
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ESP32-S3-WROOM-1
WROOM · ESP32-S3 · Active
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Every figure here is checked against Espressif’s official datasheets. We’ve taken every care to keep it accurate — but datasheets are dense and mistakes happen, so if something looks off, please report it.
Which should you choose?
These run different SoCs (ESP32-C6 vs ESP32-S3), so they differ in CPU, wireless and peripherals — not just packaging.
Choose ESP32-C6-WROOM-1 if you need
- Wi-Fi 6 — better battery life and throughput in busy networks
- 802.15.4 radio for Thread, Zigbee and Matter-over-Thread mesh
Choose ESP32-S3-WROOM-1 if you need
- 2 CPU cores vs 1 — more headroom for RTOS / parallel work
- faster CPU (240 MHz, Xtensa LX7)
- vector / AI acceleration for on-device ML and DSP
- PSRAM for camera frames, audio buffers and LVGL/large displays
- native USB-OTG — act as a USB device/host without a USB-UART chip
Size, to scale
Same footprint — both are 18×25.5 mm.
Spec differences at a glance
- CPU: ESP32-C6-WROOM-1 RISC-V, 1-core · ESP32-S3-WROOM-1 Xtensa LX7, 2-core
- Max clock: ESP32-C6-WROOM-1 160 MHz · ESP32-S3-WROOM-1 240 MHz
- ROM: ESP32-C6-WROOM-1 320 KB · ESP32-S3-WROOM-1 384 KB
- PSRAM: ESP32-C6-WROOM-1 None · ESP32-S3-WROOM-1 2 / 8 / 16 MB
- Wi-Fi: ESP32-C6-WROOM-1 Wi-Fi 6 · ESP32-S3-WROOM-1 Wi-Fi 4
- 802.15.4 (Thread/Zigbee): ESP32-C6-WROOM-1 Yes · ESP32-S3-WROOM-1 No
- Usable GPIO: ESP32-C6-WROOM-1 23 · ESP32-S3-WROOM-1 36
- ADC: ESP32-C6-WROOM-1 7× 12-bit · ESP32-S3-WROOM-1 20× 12-bit
- USB: ESP32-C6-WROOM-1 USB-Serial-JTAG · ESP32-S3-WROOM-1 USB-OTG
- UART / SPI / I²C / I²S: ESP32-C6-WROOM-1 2 / 1 / 2 / 1 · ESP32-S3-WROOM-1 3 / 2 / 2 / 2
- Touch: ESP32-C6-WROOM-1 0 · ESP32-S3-WROOM-1 14
- Pin count: ESP32-C6-WROOM-1 29 · ESP32-S3-WROOM-1 41
- Crypto: ESP32-C6-WROOM-1 AES, SHA, RSA, HMAC, ECC, RNG · ESP32-S3-WROOM-1 AES, SHA, RSA, HMAC, RNG
Compute & memory
⚑ flag an error| ESP32-C6-WROOM-1 | ESP32-S3-WROOM-1 | |
|---|---|---|
| CPU≠ | RISC-V, 1-core | Xtensa LX7, 2-core |
| Max clock≠ | 160 MHz | 240 MHz |
| SRAM | 512 KB | 512 KB |
| ROM≠ | 320 KB | 384 KB |
| Flash options | 4 / 8 / 16 MB | 4 / 8 / 16 MB |
| PSRAM≠ | None | 2 / 8 / 16 MB |
| Co-processor | ULP-RISC-V | ULP-RISC-V |
Wireless
⚑ flag an error| ESP32-C6-WROOM-1 | ESP32-S3-WROOM-1 | |
|---|---|---|
| Wi-Fi≠ | Wi-Fi 6 | Wi-Fi 4 |
| Wi-Fi bands | 2.4GHz | 2.4GHz |
| Bluetooth | BLE 5.x | BLE 5.x |
| 802.15.4 (Thread/Zigbee)≠ | Yes | No |
| Antenna | PCB | PCB |
Peripherals & I/O
⚑ flag an error| ESP32-C6-WROOM-1 | ESP32-S3-WROOM-1 | |
|---|---|---|
| Usable GPIO≠ | 23 | 36 |
| ADC≠ | 7× 12-bit | 20× 12-bit |
| USB≠ | USB-Serial-JTAG | USB-OTG |
| UART / SPI / I²C / I²S≠ | 2 / 1 / 2 / 1 | 3 / 2 / 2 / 2 |
| TWAI (CAN) | Yes | Yes |
| SD/MMC | Yes | Yes |
| Ethernet MAC | No | No |
| Touch≠ | 0 | 14 |
Power
⚑ flag an error| ESP32-C6-WROOM-1 | ESP32-S3-WROOM-1 | |
|---|---|---|
| Operating voltage | 3.0-3.6 V | 3.0-3.6 V |
| Deep sleep | 7 µA | 7 µA |
Physical
⚑ flag an error| ESP32-C6-WROOM-1 | ESP32-S3-WROOM-1 | |
|---|---|---|
| Dimensions | 18 × 25.5 × 3.1 mm | 18 × 25.5 × 3.1 mm |
| Pin count≠ | 29 | 41 |
| Temp range | -40 to 85 °C | -40 to 85 °C |
| Mounting | SMD castellated | SMD castellated |
| Lifecycle | Active | Active |
Security
⚑ flag an error| ESP32-C6-WROOM-1 | ESP32-S3-WROOM-1 | |
|---|---|---|
| Secure boot | Yes | Yes |
| Flash encryption | Yes | Yes |
| Crypto≠ | AES, SHA, RSA, HMAC, ECC, RNG | AES, SHA, RSA, HMAC, RNG |
| Digital signature | Yes | Yes |
| TRNG | Yes | Yes |