Pico 2 W vs ESP32-S3: Which WiFi MCU Wins?
The ESP32-S3-DevKitC wins overall with 240MHz dual-core processing, 8MB PSRAM, camera interface, and USB OTG for $10 — making it the more capable platform for multimedia and AI-adjacent projects. The Raspberry Pi Pico 2 W counters with 12 PIO state machines, ARM TrustZone security, and a $7 price that makes it the smarter pick for custom protocol work and secure IoT deployments.
Head-to-Head Comparison
| Category | Winner | Why |
|---|---|---|
| Processing Power | ESP32-S3-DevKitC-1 | The ESP32-S3 runs dual Xtensa LX7 cores at 240MHz versus the Pico 2 W's dual Cortex-M33 at 150MHz — a 60% clock speed advantage. The S3 also includes vector instructions for AI/ML inference acceleration. The Pico 2 W offers a unique dual-architecture option (switch between ARM and RISC-V Hazard3 at boot), but raw throughput goes to the ESP32-S3. |
| WiFi and Bluetooth | Raspberry Pi Pico 2 W | Both boards support WiFi 4 (802.11 b/g/n) at 2.4GHz, but the Pico 2 W ships with BLE 5.2 via its CYW43439 module versus the ESP32-S3's BLE 5.0. The Pico 2 W's newer Bluetooth spec offers improved throughput and range in BLE-heavy applications. However, the ESP32-S3 has a more mature WiFi stack battle-tested across hundreds of millions of shipped devices, with better range and enterprise WPA2 support. |
| Camera and Multimedia | ESP32-S3-DevKitC-1 | The ESP32-S3 has a dedicated DVP camera interface (8/16-bit) and LCD interface (SPI/8080/RGB) — the Pico 2 W has neither. Combined with 8MB PSRAM for frame buffering, the S3 can capture and stream camera images at QVGA or higher. The Pico 2 W's 520KB SRAM cannot buffer even a single VGA frame. For any project involving image capture, video streaming, or display output, the ESP32-S3 is the only option. |
| Programmable I/O | Raspberry Pi Pico 2 W | The Pico 2 W's RP2350 has 3 PIO blocks with 12 state machines that can implement any digital protocol with cycle-accurate timing — WS2812 LEDs, VGA, DPI displays, custom serial, even USB host. The ESP32-S3's RMT peripheral handles LED protocols and IR remotes, but it is not a general-purpose programmable I/O engine. PIO is architecturally unique and has no equivalent in the Espressif ecosystem. |
| Security Features | Raspberry Pi Pico 2 W | The RP2350 includes ARM TrustZone for hardware-isolated secure and non-secure execution environments, OTP antifuses for key storage, signed boot, SHA-256 acceleration, and hardware TRNG. The ESP32-S3 offers flash encryption (AES-XTS-256) and Secure Boot v2, but lacks TrustZone-level compartmentalization. Raspberry Pi even ran a public hacking challenge on RP2350 security — for production IoT with firmware protection requirements, the Pico 2 W's security architecture is more comprehensive. |
| Ecosystem and Language Support | ESP32-S3-DevKitC-1 | The ESP32-S3 has mature support across Arduino IDE, ESP-IDF, MicroPython, CircuitPython, and Rust — backed by a decade of Espressif community content. The Pico 2 W has excellent official Raspberry Pi documentation (the best MicroPython tutorials available) and strong CircuitPython support from Adafruit, but fewer third-party libraries and Stack Overflow answers for WiFi-specific projects. Both support Rust with standard RISC-V targets. |
Which Board for Your Project?
| Use Case | Recommended | Why |
|---|---|---|
| WiFi security camera or doorbell | ESP32-S3-DevKitC-1 | DVP camera interface + 8MB PSRAM for frame buffering + 240MHz processing make the ESP32-S3 the only viable choice. The Pico 2 W has no camera interface and insufficient SRAM for image processing. |
| WS2812 LED art installation with WiFi control | Raspberry Pi Pico 2 W | PIO generates the WS2812 800kHz signal with zero CPU overhead while the other core handles WiFi. The ESP32-S3's RMT can drive LEDs but with fewer channels and less flexibility for mixed-protocol setups. |
| USB host or custom peripheral interface | ESP32-S3-DevKitC-1 | USB OTG 1.1 enables both device and host modes natively. The Pico 2 W has USB 1.1 device mode and can emulate USB host via PIO, but hardware USB OTG is more reliable for production use. |
| Secure IoT device with firmware protection | Raspberry Pi Pico 2 W | ARM TrustZone + signed boot + OTP antifuses provide hardware-backed firmware authentication with secure/non-secure isolation. The ESP32-S3 has flash encryption and secure boot but no TrustZone compartmentalization. |
| Edge ML voice recognition or keyword spotting | ESP32-S3-DevKitC-1 | Vector instructions accelerate neural network inference, 8MB PSRAM holds model weights, and 240MHz clock handles real-time audio processing. Espressif's ESP-SR framework provides pre-built wake word and command recognition. |
Where to Buy
Final Verdict
Buy the ESP32-S3 if your project involves cameras, displays, edge ML, USB OTG, or anything that benefits from 240MHz processing and 8MB PSRAM. Buy the Pico 2 W if you need PIO for custom hardware protocols, TrustZone security for production IoT, or want the best MicroPython learning experience at $7. The $3 price gap is negligible — choose based on whether your project needs multimedia horsepower or protocol flexibility and security.
Frequently Asked Questions
Can the Pico 2 W run a camera like the ESP32-S3?
No. The Pico 2 W lacks a dedicated camera interface, and its 520KB SRAM cannot buffer camera frames. The ESP32-S3 has a DVP 8/16-bit camera interface and 8MB PSRAM specifically designed for image capture and processing.
Which board is better for MicroPython beginners?
The Pico 2 W has the best official MicroPython documentation — Raspberry Pi maintains structured tutorials for every peripheral. The ESP32-S3 has more community tutorials and third-party libraries but less curated official documentation.
What is PIO and does the ESP32-S3 have anything equivalent?
PIO (Programmable I/O) consists of 12 tiny state machines on the RP2350 that can implement any digital protocol with cycle-accurate timing. The ESP32-S3's RMT peripheral handles simple pulse protocols like WS2812 and IR, but cannot match PIO's generality for custom serial, VGA, or DPI display protocols.
Which has better deep sleep power consumption?
The ESP32-S3 draws approximately 7uA in deep sleep versus the Pico 2 W's approximately 25uA — a 3.5x advantage. For battery-powered devices that sleep most of the time, the ESP32-S3 will last significantly longer on the same battery.
Can I switch between ARM and RISC-V on the Pico 2 W?
Yes. The RP2350 can boot as either dual ARM Cortex-M33 or dual RISC-V Hazard3 cores — selected at boot time via firmware configuration. This makes the Pico 2 W ideal for RISC-V experimentation while maintaining full ARM compatibility.
Which board has more GPIO pins?
The ESP32-S3-DevKitC exposes 45 GPIO pins versus the Pico 2 W's 26 — nearly double. The S3 also has 20 ADC channels compared to the Pico 2 W's 4. For projects with many sensors or actuators, the ESP32-S3 provides more connectivity options.
Is the ESP32-S3 worth the extra $3 over the Pico 2 W?
If you need camera support, PSRAM, USB OTG, or more GPIO, the extra $3 is a trivial cost for significantly more capability. If your project only needs WiFi, BLE, and basic I/O, the Pico 2 W at $7 delivers excellent value with better security features.