The Raspberry Pi Foundation has delivered its next single-board computer a year early. The Raspberry Pi 4 Model B comes with a quad-core CPU, up to 4 GB of LPDDR4 RAM, Gigabit Ethernet dual 4K HDMI and USB Type-C. It should deliver 3x the performance of its predecessor while remaining backwards-compatible with older boards. Better still, the Raspberry Pi 4 Model B costs just US$35 and is available to order worldwide now.
https://www.notebookcheck.net/Raspberry-Pi-4-3x-the-performance-of-the-Raspberry-Pi-3B-with-Gigabit-Ethernet-dual-4K-HDMI-and-USB-Type-C-for-just-US-35.425364.0.html
What actually i can do whit it switch relay watch movies, torrent, browse internet whit silent, low power. At least its cheap computer whit secure Linux os. whiteout internet its useless. there main os is for programmers.
Too bad no hard drive slot :(