Here is another page with some proper tech specs I believe, I am sure Sebastian is nice but the article seems like he gave bullet points to AI
https://wiki.sipeed.com/hardware/en/lichee/RV_Nano/1_intro.html
Ranges from US$8.90 to $13.90 depending on LAN/WLAN+BtBLE5.4
Major core: 1GHz RISC-V C906 / ARM A53 (selectable); Minor core: 700MHz RISC-V C906; Low-power core: 25~300M 8051
256MB DDR3
USBC