Dual 4K Output
Dual micro-HDMI ports that support up to 4Kp60, to use your Raspberry Pi 4 with much larger displays with crisp, sharp, high resolution. Use the H.265 4Kp60 hardware decoding to watch 4K movies in your favourite media centre distro.
Fastest CPU Ever
The faster 1.5GHz 64-bit quad-core CPU on the Raspberry Pi 4's Cortex A72 SoC, coupled with the up to 4GB LPDDR4 RAM give performance comparable to entry-level x86 desktop PCs. You'll see significantly faster boot speeds, and much better performance for CPU-heavy tasks like emulation and media centre usage; much snappier all round!
Bluetooth 5.0 (from 4.2 on the Raspberry Pi 3 B+) means you'll get twice the speed (2 Mbit/s) and four times the range (50m outdoors, 10m indoors) than you did with the previous generation. There's dual-band 802.11 b/g/n/ac wireless LAN, for quick wireless networking with less interference and better reception.
The Raspberry Pi 4 has two USB 3.0 ports, for up to 10x faster transfer speeds than USB 2.0, perfect for connecting fast peripherals like SSDs and flash drives. There are also two USB 2.0 ports for connecting less speed-dependent peripherals like keyboards and mice.