Why’s that?
something like Trixie and XFCE since there is small amounts of ram on this board.
I have the R-01 (also 1GB RAM; everything works fine except a browser, which is not a problem for me) and I just run Slackware ( Slackware image for DevTerm R01 ) with ratpoison on it. I think the regular Armbian stuff will work on the CM3, though.