TL; DR
- MediaTek Dimensity 8400 leak reveals a 4 nm process with full big-core design.
- Expected to score 1.7-1.8M on AnTuTu; sits between Snapdragon 8 Gen 2 and 8 Gen 3 in the benchmark.
- Likely to debut in Xiaomi’s Redmi K series or POCO X7 series first.
Renowned tipster, Digital Chat Station, has recently leaked details about MediaTek’s upcoming Dimensity 8400 chipset, the successor to the Dimensity 8300. While MediaTek’s flagship Dimensity 9400 has already made its debut in China and powers devices like the vivo X200 series and OPPO Find X8 series, the Dimensity 8400 will target the mid-premium segment and potentially compete with Qualcomm’s upcoming Snapdragon 8s Gen 4.
The Dimensity 8400 will reportedly use the TSMC 4 nm process, aligning it with the latest in efficiency-focused manufacturing, though it differs from the flagship 3 nm process found in the Dimensity 9400. What’s notable about this chipset is its architecture: it is said to feature a full big-core design, meaning all cores are high-performance rather than a mix of efficiency and power cores.
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The big core is said to be the ARM Cortex-A725 but details are scarce at the moment. Nevertheless, this mirrors the design approach seen in the Dimensity 9400 and Qualcomm’s Snapdragon 8 Slots, both focusing on the all-big-core performance-centric core architecture.
DCS also suggests that the Dimensity 8400 may achieve scores between 1.7 to 1.8 million on AnTuTu, putting it slightly below the Snapdragon 8 Gen 3’s 2 million mark but above the Snapdragon 8 Gen 2’s 1.6 million. For reference, the MediaTek Dimensity 8300 on the POCO X6 Pro achieved an AnTuTu score of around 1.4 million—so that’s a 22% improvement in performance.
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The MediaTek Dimensity 8400 has been spotted in the Xiaomi HyperOS codebase, which means that the chipset would likely be used in Xiaomi’s Redmi K series or models like the Redmi Turbo 4/POCO F7 or even the POCO X7 lineup.
The official launch date for the Dimensity 8400 remains unknown, but as it surfaces in more software leaks and rumors, it seems likely we’ll see this chipset powering upcoming mid-premium smartphones soon.
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