MediaTek
CPUSmartphoneReleased Oct 9, 2024

MediaTek Dimensity 9400

8C/8T · 3.6 GHz

The MediaTek Dimensity 9400 is a flagship 5G smartphone chip announced in October 2024, with phones arriving from the fourth quarter of that year. Built on TSMC's second-generation 3 nm process, it uses MediaTek's second-generation All Big Core design with an Arm Cortex-X925 prime core at 3.62 GHz, three Cortex-X4 and four Cortex-A720 cores, backed by 12 MB of L3 cache and a 10 MB system cache. It pairs a 12-core Arm Immortalis-G925 GPU with the MediaTek NPU 890, which added on-device LoRA training and agentic AI support.

General

Manufacturer
MediaTek
Model
MediaTek Dimensity 9400
Segment
Smartphone
Generation
Dimensity 9000
Codename
MT6991
Architecture
ARM64
Microarchitecture
1× Cortex-X925 + 3× Cortex-X4 + 4× Cortex-A720
Release date
Oct 9, 2024

Cores & clocks

Cores / threads
8 cores / 8 threadsS1+P3+E4
Base clock
—
Boost clock
3.62 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
Clock: 1,612 MHz
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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