CPUSmartphoneReleased Apr 10, 2025

MediaTek Dimensity 9400+

8C/8T · 3.7 GHz

The MediaTek Dimensity 9400+ is a refresh of the Dimensity 9400 announced in April 2025, with phones on sale the same month. It raises the Arm Cortex-X925 prime core to 3.73 GHz and improves agentic AI performance by about 20% with Speculative Decoding+, while adding longer-range Bluetooth and BeiDou satellite messaging support. A tablet version is used in the Samsung Galaxy Tab S11.

General

Manufacturer: MediaTek
Model: MediaTek Dimensity 9400+
Segment: Smartphone
Generation: Dimensity 9000
Codename: MT6991Z/TCZA
Architecture: ARM64
Microarchitecture: 1× Cortex-X925 + 3× Cortex-X4 + 4× Cortex-A720
Release date: Apr 10, 2025
Price: Search on Amazon

Cores & clocks

Cores / threads: 8 cores / 8 threadsS1+P3+E4
Base clock: —
Boost clock: 3.73 GHz
TDP (design W): —
Unlocked: ✕ No
L2 cache: 7 MB
L3 cache: 12 MB
Technology (nm): 3 nm
TSMC N3E

Platform

Socket: —
2-CPU (multi-socket): ✕ No
Integrated GPU: Immortalis-G925 MC12
Memory type: LPDDR5X-10667
4-channel
Memory size: —
ECC memory: —
PCIe: —

Instructions & AI

Instruction extensions: Armv9.2-A
NPU: MediaTek NPU 890

OS support

Notes: Android smartphone platform. MediaTek ships it with Android and provides no Windows, ChromeOS or desktop Linux support; mainstream Linux distributions publish no official image for this SoC.

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