MediaTek has officially unveiled the Dimensity 8400, the successor to last year’s Dimensity 8300. Designed for the premium mid-range smartphone market, this new chipset offers significant performance gains and improved energy efficiency. It aims to deliver a flagship-level experience at a more affordable price.
Xiaomi has revealed that the Redmi Turbo 4 will be the first smartphone of 2025 to feature the Dimensity 8400-Ultra. The launch date is set to be announced on January 1st.

MediaTek Dimensity 8400 Specifications
Coming to the Dimensity 8400, the chipset with an all-big-core design is built upon the latest Arm Cortex-A725 cores and boasts a remarkable 3.25GHz clock speed, delivering a 10% increase in single-core performance while simultaneously reducing power consumption by a substantial 35%. This achievement is attributed to a significant enhancement in the chip’s cache system.
On the graphics front, the integrated Arm Mali-G720 GPU delivers a 24% boost in peak performance and a 42% reduction in power consumption, ensuring an exceptional gaming experience. The introduction of the innovative StarSpeed Engine dynamically optimizes resource allocation in real-time, adapting to the demands of each game to deliver smooth and sustained gameplay at 60 fps while keeping the device cool.
The chipset also features the powerful MediaTek NPU 880, enhancing AI performance for tasks like language model processing and image generation. Powered by the Dimensity AI engine, it supports complex on-device models, enabling faster and higher-quality content creation, including features like large language models and Stable Diffusion 1.5.
For imaging, the chipset integrates the MediaTek Imagiq 1080 ISP image processor and a dedicated QPD zoom hardware engine. This powerful combination enables all-domain depth focusing, resulting in more precise and rapid photography.
The Dimensity 8400 is poised to significantly impact the mid-range smartphone market, offering a compelling blend of performance, power efficiency, and advanced features. With the Redmi Turbo 4 leading the charge, we can expect to see a wave of exciting new devices powered by this powerful new chipset in the coming months.

Talking about the Redmi Turbo 4, it is expected to feature a 6.67-inch LTPS OLED panel with a 1.5K resolution, 120Hz refresh rate, and an in-screen fingerprint sensor. It may offer up to 12GB RAM, 512GB storage, a 6,550mAh battery with 90W fast charging, and HyperOS 2.0-based Android 15. The device is rumored to have a plastic frame, glass back, and is likely to launch in China by early January 2025. The device will be rebranded as the Poco F7 for the global market.
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