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Both chips have integrated NPUs.
Snapdragon's Hexagon NPU supports generative AI models up to 10 billion parameters and enhances the ISP for semantic segmentation and night shots.
The Dimensity 8400's NPU 880 supports Generative AI and Agentic AI for complex on-device AI agents.
For cameras, the Snapdragon 8 Gen 3 features a Spectra Cognitive ISP with three 18-bit pipelines, real-time semantic segmentation (up to 12 layers), and supports 8K/30fps or 4K/120fps video.
The Dimensity 8400's Imagiq 1080 ISP handles up to 320MP single camera and 4K/60fps video, with zero shutter lag and low-light noise reduction.
Connectivity differs: Snapdragon includes the X75 5G modem (up to 10 Gbps download), Wi-Fi 7, and Bluetooth 5.4.
The Dimensity 8400 has a 5G modem (up to 5.17 Gbps), Wi-Fi 6E, and Bluetooth 5.4.
Overall, the Snapdragon 8 Gen 3 leads in raw performance, GPU power, camera capabilities, and connectivity.
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The Dimensity 8400 offers a competitive all-big-core CPU design and strong AI features, making it a solid choice for high-end devices.
