Amazon.com: Raspberry Pi Compute Module 4-4GB RAM eMMC 0GB (Lite) Single Board (CM4004000) 64-Bit 1.5GHZ Quad-Core Processor Bluetooth 5.0 No Wi-Fi for Networked Ai Core and More (Raspberry Pi Official Genuine) :
A20-OLinuXino-LIME2-eMMC - SINGLE BOARD COMPUTER WITH ALLWINNER A20 DUAL CORE CORTEX-A7 1GB RAM 4GB EMMC MLC/SLC FLASH AND GIGABIT ETHERNET , from Olimex for €55.00