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ESP32-C6 vs ESP32-H2

8 of the 20 features in our table differ between the ESP32-C6 and the ESP32-H2.

RISC-V

ESP32-C6

Wi-Fi 6, BLE 5.3, Thread and Zigbee

Wi-Fi 6 on 2.4 GHz plus Thread and Zigbee in one chip: the natural pick for Matter devices and mixed networks.

Watch out: No PSRAM, a single 160 MHz core, and ESPHome supports it only with ESP-IDF.

RISC-V

ESP32-H2

Thread, Zigbee and BLE, no Wi-Fi

No Wi-Fi: Thread, Zigbee and Bluetooth LE only, made for battery sensors in a mesh network.

Watch out: It needs a Thread border router, a Zigbee coordinator or a BLE gateway to reach your network.

Differences

FeatureESP32-C6ESP32-H2
CPU1 × RISC-V, 160 MHz1 × RISC-V, 96 MHz
Low-power coreLP RISC-V coreNo
SRAM512 KB320 KB
Wi-FiWi-Fi 6 (802.11ax), 2.4 GHzNo
GPIO30 (22 on QFN32)19
ADC channels75
TWAI (CAN)21
ESPHomeYes (ESP-IDF)Yes (ESP-IDF, over Thread)

Same on both: PSRAM, Bluetooth, Thread / Zigbee, USB, DAC, Touch pins, Camera, Display interface, Ethernet MAC, Deep sleep, AI / DSP, and Arduino-ESP32.

Choose the ESP32-C6 if you need

Choose the ESP32-H2 if you need

Open the ESP32 comparison →Tick what your project needs and see which of the eight chips fits best.

Frequently asked questions

What is the difference between the ESP32-C6 and the ESP32-H2?

The ESP32-C6 has Wi-Fi on the chip (Wi-Fi 6 on 2.4 GHz), a faster CPU (160 against 96 MHz), more internal SRAM (512 against 320 KB), and more GPIO (30 against 19). The ESP32-H2 has a lean radio for battery end devices on Thread or Zigbee (no Wi-Fi to power or set up).

Which uses less power in deep sleep, the ESP32-C6 or the ESP32-H2?

Both are rated at 7 µA in deep sleep, for the chip alone. On a board the regulator and the LEDs make the difference.

Can I move my project from the ESP32-C6 to the ESP32-H2?

Arduino-ESP32 and ESP-IDF support both chips, so most code builds for either; pin numbers, strapping pins and some peripherals change. Anything that uses Wi-Fi on the chip (Wi-Fi 6 on 2.4 GHz) won’t carry over: the ESP32-H2 doesn’t have that hardware.

Other comparisons

ESP32 vs ESP32-C6 ESP32 vs ESP32-H2 ESP32-C3 vs ESP32-C6 ESP32-C3 vs ESP32-H2 ESP32-C5 vs ESP32-C6 ESP32-C5 vs ESP32-H2 ESP32-C6 vs ESP32-P4 ESP32-C6 vs ESP32-S2 ESP32-C6 vs ESP32-S3 ESP32-H2 vs ESP32-P4 ESP32-H2 vs ESP32-S2 ESP32-H2 vs ESP32-S3

Figures from Espressif datasheets, ESPHome and Arduino-ESP32 documentation, checked in November 2026.