AMD A9-9400 SoC socket: Socket FT4

What the A9-9400 SoC is

The A9-9400 SoC is a two core, two thread mobile processor from Stoney Ridge. It launched in May 2016 with a 2.4 GHz base and up to 3.2 GHz boost at 10 W. Two cores with higher clocks cover thin laptops where responsive pace matters at low power.

One megabyte of L2 cache feeds office multitasking. The 2.4 GHz base sustains browsing well, while 3.2 GHz boost lifts single thread peaks. Ten watts fit fanless designs.

Radeon graphics with video engines drive laptop displays. Single channel DDR4 keeps board costs down. The chip suits entry laptops above A6 parts on clocks.

On 28 nm the 9400 solders to FT4 boards. It sits below the 9420 on clocks. Locked multiplier removes tuning.

Socket and motherboard compatibility

The A9-9400 solders to Socket FT4 with no socket option. Laptop model fixes the chip for life. Boards set 10 W for passive bodies.

Thin laptops use soldered DDR4 and eMMC. The How to find your CPU socket type guide shows BGA identification.

The A9-9420 SoC on the same socket adds clocks. The A6-9200 SoC trims power where silence matters.

Memory, PCIe and cooling

DDR4-2133 single channel is the memory design. Bandwidth covers office and streaming. Capacity follows board designs.

Eight PCIe lanes wire storage and networking. Speeds suit thin clients.

Ten watts cool passively. No fan simplifies service.

Upgrade paths

No CPU upgrade exists on soldered FT4. OS refreshes extend life.

A new laptop is the path past dual cores.