The battery life is just as impressive as the performance.

>After a single build of WebKit, the M1 MacBook Pro had a massive 91% of its battery left. I tried multiple tests here and I could have easily run a full build of WebKit 8-9 times on one charge of the M1 MacBook’s battery. In comparison, I could have gotten through about 3 on the 16” and the 13” 2020 model only had one go in it.

https://techcrunch.com/2020/11/17/yeah-apples-m1-macbook-pro...

A few days ago, there was a story showing that it was twice as fast to compile Rust compared to the 2019 Macbook Pro: https://news.ycombinator.com/item?id=25126394

Since Rust is LLVM-based, there should be a substantial performance improvement for Clang as well.

Was that a full parallel build (using all available cores)?

Because that's what counts for me, as a developer.

I believe so, as cargo defaults to the number of cores, as per this issue: https://github.com/rust-lang/cargo/issues/2805

For what it's worth, this guy noticed a nearly 2x speedup in compiling OpenSSL, which is C code, so I assume GCC or Clang: https://twitter.com/sandofsky/status/1331732592958214145

This suggests, though it does not prove, that the performance improvement for code compilation is likely not exclusive to a single language.

For my purposes it's nearly twice as fast as my maxed out 2018 MBP for development (6-core i9). This is for projects which are mostly C++ / C / Swift

https://twitter.com/twolivesleft/status/1331932956642852864