[jjoonathan]

It uses EUV.

> 7nm FinFET plus (N7+) technology entered full-scale production in 2019 and delivered customer 7nm products to market in high volume. N7+ technology is the first commercially available extreme ultraviolet EUV-enabled foundry manufacturing process

https://www.tsmc.com/english/dedicatedFoundry/technology/log...

It looks like there was a 7nm SRAM process in 2016 that only used DUV, but I'd be surprised if more than, say, 1% of "7nm" mentions over the last few years were intended to refer to the 2016 process rather than the 2019 process.

[sudosysgen]

That is N7+, normal N7 was without EUV

According to Wikipedia: https://en.wikipedia.org/wiki/7_nm_process , mass production with N7+ which uses EUV was ramping up from 2018 to 2019. It seems that the Apple A12 as well as some Ryzen chips were using the N7 DUV process.