A9-9400 SoC is a mobile processor from AMD released on 31 May 2016, and it is in active production status now. It belongs to A9 family and has a Stoney Ridge architecture. This processor is built on AMD Socket FT4, and uses unknown PCI express connection. 28 nm process is used in production.
Processor has 2 cores and 2 threads, with the base frequency of 2.4 GHz. It has DDR4 memory support. As for the cache, it supports L1 128K (per core) and L2 1MB (per core).