>>1026572
>x86 is specifically used in data centers because the performance PER WATT is what matters.
Lolno, obscure manycore architectures like the Pezy chips have the best performance per watt, not that it matters anyway since many applications are offloading workloads to accelerators. In what could be considered the mainstream ISAs space PPC64 probably has the best performance per watt, and even then only in some performance metrics.
The reason why x86 is used in datacenters is because of the massive amount of code which exists for x86 due to its domination in the desktop space that naturally leads to software developers writing and tuning code for their x86 system which then needs to be run on an x86 server, because most software developers and build system managers are too fucking retarded to do any sort of non native development. Remember that many software developers don't even know what cmake or its equivalents are.