Is it really that much better than some small form AMD Ryzen with 2x32 SODIMM thrown in? I get that the M series is amazing in terms of efficiency and some people love Apple hardware but you could likely have had that performance with a $700 setup.
The only x86 CPU that does this is the Xeon Max: https://www.intel.com/content/www/us/en/products/details/pro...
There are other possible solutions but they are expensive.
the problem with Macs, among other things, is lack of ECC RAM.