The Rockchip RK3562J and RK3568J are two mainstream processors designed for industrial IoT and edge computing. While both target similar markets, they differ significantly in performance scalability and feature sets. RK3562J is positioned for entry-level industrial applications, whereas RK3568J is geared towards higher-performance multimedia and AI computing scenarios. This article provides a detailed analysis of their technical differences and application choices.
CPU Configuration
RK3562J: Standard quad-core Cortex-A53 (1.8GHz) + Cortex-M0 co-processor
RK3568J: Enhanced quad-core Cortex-A55 (1.8GHz) with architectural optimizations for better performance
Co-processor
RK3562J: Integrated 200MHz Cortex-M0
RK3568J: No independent co-processor, but improved real-time performance via hardware acceleration units
AI Acceleration
RK3562J: Built-in 1TOPS NPU (INT8/INT16)
RK3568J: Same NPU capability, but adds TensorFlow Lite framework support
Multimedia Processing
RK3562J: Supports 4K30 video encoding/decoding
RK3568J: Maintains 4K30 support with improved encoding efficiency
Memory Support
Both: LPDDR4/LPDDR4X supported
RK3568J: Optimized memory controller with ~12% higher bandwidth
Interface Expansion
RK3562J: 2×CAN 2.0B + TSN Ethernet
RK3568J: Adds PCIe 2.0 interface (not PCIe 3.0)
Display Output
Both: HDMI 1.4
RK3568J: Adds DisplayPort over USB-C support
RK3562J is better suited for:
✓ Industrial control applications with real-time requirements
✓ Single-channel video processing devices
✓ Power-sensitive applications
RK3568J is better suited for:
✓ Applications requiring external accelerator cards
✓ Projects with high interface expansion needs
✓ HMI systems with complex display requirements
Typical Power Consumption
RK3562J: 2–3W (M0 core can independently enter sleep mode)
RK3568J: 3–4W (requires more sophisticated power management)
Cost-effectiveness
RK3562J: More cost-competitive in basic control scenarios
RK3568J: More economical when interface expansion is required
Need a hardware real-time core? → Yes: Choose RK3562J
Need PCIe expansion? → Yes: Choose RK3568J
Is the project budget limited? → Yes: Prefer RK3562J
