The same BTB header as the Raspberry-Pi CM4; CB1 combined with Pi4B, the performance is almost close to the Raspberry-Pi 3B, and can be an alternative to the Raspberry-Pi 3B ^^ BIGTREETECH CB1 is equipped with quad core 64 bit ARM Cortex-A53 @ 1.5GH z processor, 1GB DDR3 memory chip, with powerful performance ^^ The core board reserves HDMI 2.0A display interface to support 4K display; onboard USB 2.0 port ^^ BIGTREETECH CB1 has onboard 100M Ethernet interface and supports WIFI transmission ^^ BIGTREETECH CB1 runs the Linux system efficiently, supports Ubuntu, programmable, and is convenient for users to DIY ^^ The GPU of BIGTREETECH CB1 is Mali G31 MP2, which supports OpenGL 3.2