The Rock Pi S has finally made it to market, after being announced this summer. The miniature SBC is underpinned by a Rockchip RK3308 quad-core SoC, either 256 or 512 MB of RAM and 1 GB of NAND flash storage. The board has a microSD card slot too, Wi-Fi connectivity and a 26-pin GPIO header among other features. The Rock Pi S measures just 3.8 x 3.8 cm and starts at US$9.90. Orders will begin shipping globally from November 12.
https://www.notebookcheck.net/The-Rock-Pi-S-is-now-available-to-purchase-from-US-9-90-with-up-to-512-MB-of-RAM-and-1-GB-of-NAND-flash-storage.442107.0.html