I don't think it helps at all with running x86-64 code on arm.
Knowing that at least some x86-64 steam games could work is promising, thanks.
For me it all comes down to the extra memory bandwidth.
A recent metal port of llama is pretty tempting and being able to run GPU accelerated LLMs with greater than 16GB (mid range GPUs) or 24GB (highend/RTX 4090) on the mac studio is interesting. $3,600 (for 96GB ram) interesting, not so sure.