ESP32 vs. ESP32-S3

Attribute	ESP32	ESP32-S3
Processor	ESP32	ESP32-S3
Core	Dual-core	Single-core
Wi-Fi	802.11 b/g/n	802.11 b/g/n
Bluetooth	Bluetooth 4.2	Bluetooth 5.0
Security	WEP, WPA/WPA2 PSK/Enterprise	WEP, WPA/WPA2 PSK/Enterprise

Introduction

When it comes to microcontrollers, the ESP32 and ESP32-S3 are two popular choices among developers. Both of these chips are manufactured by Espressif Systems and offer a wide range of features for IoT projects. In this article, we will compare the attributes of the ESP32 and ESP32-S3 to help you decide which one is the right fit for your next project.

Processor

The ESP32 is powered by a dual-core Tensilica LX6 microprocessor clocked at 240 MHz. This processor provides enough processing power for most IoT applications and allows for multitasking. On the other hand, the ESP32-S3 features a more powerful RISC-V dual-core processor clocked at 240 MHz. This processor offers improved performance and efficiency compared to the ESP32, making it a better choice for more demanding applications.

Wireless Connectivity

Both the ESP32 and ESP32-S3 come with built-in Wi-Fi and Bluetooth capabilities, making them ideal for IoT projects that require wireless connectivity. The ESP32 supports Wi-Fi 802.11 b/g/n and Bluetooth 4.2, while the ESP32-S3 offers support for Wi-Fi 802.11 b/g/n/ac and Bluetooth 5.0. This means that the ESP32-S3 provides faster and more reliable wireless connections compared to the ESP32.

Memory

When it comes to memory, the ESP32 comes with 520 KB of SRAM and 448 KB of ROM. This is sufficient for most IoT applications, but may not be enough for more complex projects. On the other hand, the ESP32-S3 offers 384 KB of SRAM and 8 MB of PSRAM, providing more memory for storing data and running applications. This makes the ESP32-S3 a better choice for projects that require more memory.

Security

Security is a crucial aspect of IoT devices, and both the ESP32 and ESP32-S3 come with built-in security features to protect your data. The ESP32 features hardware-based security features such as secure boot and flash encryption to prevent unauthorized access to your device. Similarly, the ESP32-S3 also offers secure boot and flash encryption, along with additional security features such as a secure element for storing sensitive information. This makes the ESP32-S3 a more secure option compared to the ESP32.

Power Consumption

Power consumption is another important factor to consider when choosing a microcontroller for your IoT project. The ESP32 is known for its low power consumption, making it ideal for battery-powered devices. The ESP32-S3, on the other hand, offers even lower power consumption thanks to its more efficient processor and improved power management features. This makes the ESP32-S3 a better choice for projects that require long battery life.

Price

When it comes to price, the ESP32 is generally more affordable compared to the ESP32-S3. This makes the ESP32 a more budget-friendly option for hobbyists and developers who are working on smaller projects with limited budgets. However, the additional features and improved performance of the ESP32-S3 may justify the higher price tag for more advanced projects that require better performance and security.

Conclusion

In conclusion, both the ESP32 and ESP32-S3 are powerful microcontrollers that offer a wide range of features for IoT projects. The ESP32 is a solid choice for projects that require a balance of performance and affordability, while the ESP32-S3 is better suited for more demanding applications that require improved performance, security, and power efficiency. Ultimately, the choice between the two will depend on the specific requirements of your project and your budget constraints.