The CM-A20 is a CPU Module powered by the Allwinner dual core processor A20 combining a power dual core ARM Cortex A7 CPU and dual core Mali-400 GPU.
The CM-A20 features 1GB DDR3, 8GB Nand Flash, power management chip AXP209, and expansion headers for plugging into a base board.
http://marsboard.org/new_marsboard_a20_download.html