Overview
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.
1. Core Architecture Differences
CPU Configuration
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RK3562J: Standard quad-core Cortex-A53 (1.8GHz) + Cortex-M0 co-processor
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RK3568J: Enhanced quad-core Cortex-A55 (1.8GHz) with architectural optimizations for better performance
Co-processor
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RK3562J: Integrated 200MHz Cortex-M0
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RK3568J: No independent co-processor, but improved real-time performance via hardware acceleration units
2. Key Performance Comparison
AI Acceleration
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RK3562J: Built-in 1TOPS NPU (INT8/INT16)
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RK3568J: Same NPU capability, but adds TensorFlow Lite framework support
Multimedia Processing
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RK3562J: Supports 4K30 video encoding/decoding
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RK3568J: Maintains 4K30 support with improved encoding efficiency
Memory Support
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Both: LPDDR4/LPDDR4X supported
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RK3568J: Optimized memory controller with ~12% higher bandwidth
3. Industrial Features Comparison
Interface Expansion
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RK3562J: 2×CAN 2.0B + TSN Ethernet
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RK3568J: Adds PCIe 2.0 interface (not PCIe 3.0)
Display Output
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Both: HDMI 1.4
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RK3568J: Adds DisplayPort over USB-C support
4. Typical Application Scenarios
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
5. Power and Cost Analysis
Typical Power Consumption
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RK3562J: 2–3W (M0 core can independently enter sleep mode)
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RK3568J: 3–4W (requires more sophisticated power management)
Cost-effectiveness
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RK3562J: More cost-competitive in basic control scenarios
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RK3568J: More economical when interface expansion is required
6. Selection Decision Tree
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Need a hardware real-time core? → Yes: Choose RK3562J
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Need PCIe expansion? → Yes: Choose RK3568J
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Is the project budget limited? → Yes: Prefer RK3562J