The latest Raspberry Pi 4 hardware uses a Broadcom BCM2711 chip, with a 50% faster processor than the previous model 3+ B. It also boasts two USB3 ports with faster throughput for external storage drives. Graphics processing also greatly improved.
Further information on the Raspberry Pi 4 can be found at the official Raspberry Pi page. The Raspberry Pi 4 image is from Wikipedia and licensed under the Creative Commons Attribution-Share Alike 4.0 International license