X is for X86.
This is the documentation for ROCK Pi X, written by Radxa Team with community contributions.
ROCK Pi X is the first X86 SBC(Single Board Computer) by Radxa. It can run Windows and Linux distributions. The ROCK Pi X is started after the Radxa team get a lot of inquiries from the users if the ROCK Pi 4 can run Windows.
ROCK Pi X features an Intel Cherry Trail quad core processor Z8300, 64bit dual channel 1866Mb/s LPDDR3, up to 4K@30 HDMI, MIPI DSI, eDP, MIPI CSI, 3.5mm jack with mic, 802.11 ac WIFI, Bluetooth 4.2, USB Port, GbE LAN, 40-pin color expansion header, RTC. Also, ROCK Pi X supports USB PD and QC powering.
ROCK Pi X comes in two models, Model A and Model B, each model has 1GB, 2GB or 4GB ram options. for detailed difference of Model A and Model B, please check Specifications.