The ROCKPro64 is an impressive bit of hardware. It has a 64-bit hexa-core Cortex-A72/A53 processor (the Rockchip RK3399 SOC including a Mali T860 MP4 GPU), PCIe 2.1 with 4 lanes, USB 3.0, and Gigabit Ethernet. It also comes with upto 4GB of LDDDR4 RAM and supports microSD cards as well as eMMC modules.
https://www.pine64.org/rockpro64/