Crowdsupply.com

sifive.com
https://www.crowdsupply.com/sifive/hifive1-rev-b and https://www.sifive.com/ RISC development

links
http://linuxgizmos.com/category/boards/

http://linuxgizmos.com/risc-v-based-allwinner-chip-to-debut-on-13-linux-hacker-board/ SIPEED $13 linux computer and http://linuxgizmos.com/risc-v-gains-new-performance-leader-with-alibabas-16-core-xt-910/ RISC computer