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• powful cputhe cpu of the Raspberry Pi 4 model b adopts the latest arm cortex-a72 architecture, which is also used in high-performance smartphones, and has evolved into a real pc. The operating clock has been changed from pi3's 1.2ghz to 1.5ghz, and the speed has become a different dimension with the updated architecture.
• video output/gputhe on-board GPU of the Raspberry Pi 4 supports 4kp@60 and newly supports h.265 decoding, OpenGL BS 3.0, etc.as for the video output, two micro HDMI with smaller connectors are installed, and the Raspberry Pi 4 also supports dual screen output.
• USB 3.0with a new soc, the speed of the Raspberry Pi 4 around i/o has been improved, and finally USB 3.0 is supported.USB boot is faster and more convenient.
• network&bluetoothgigabit Ethernet (wired LAN) has also been significantly speeded up from 300mbps of pi 3b + to 1000mbps (logical value).in addition, Bluetooth supported version has been upgraded to 5.0, and the transfer speed of pi 4 has been doubled.
• power input connector the power input connector of the Raspberry Pi 4 has been changed to USB type c. it is easier to use than micro USB and can supply a larger current reliably. The power requirement of Raspberry Pi 4 model b is 5v 3.0a, which is higher than the previous model.