Skywatcher
Captain
Analysts have said that N+1 is comparable to Samsung 8nm.I'm not sure if SMIC have developed a competitive DUV "7nm class" node as of yet. TSMC's 7N and 7NP are almost 100% DUV, with the 7NPP being 30%? EUV.
They said that N+1 will begin trial production Q4 this year, which indicates volume production by 2021-2022, which is great, but SMIC have allegedly said that N+1 will not be directly comparable in terms of performance to other nodes such as Samsung 10/8nm or TSMC 7N.
Given that N+2 is going to be on EUV, and that ASML does not appear to be granted an export license any time soon, I still maintain that by the time SMIC hits 7nm class performance, the node would be somewhat outdated already.
N+2 won't use EUV either.