Here is a good place to start with the Specs on the processor: http://www.cpu-world.com/CPUs/Bulldozer/AMD-A9-Series%20for%20Notebooks%20A9-9420.html
This a also another place to look for if you know the Processor's Family and Model: https://www.amd.com/en/support/tech-docs
The A9-9429 is a laptop mobile processor that is soldered to the laptop's motherboard. It uses a BGA (FT4) Socket.
Also according to CPU World this processor is not sold in Retail store and is a OEM/TRAY processor so it won't have any AMD Warranty on it.
