The idea that once code is rewritten to take advantage ofother cores then more wimpy cores would be better than a few powerful cores is wrong. Most threaded cod

The idea that once code is rewritten to take advantage ofother cores then more wimpy cores would be better than a few powerful cores is wrong. Most threaded code today can scale to a small number of cores (2, 4, 6) but can't scale to a ridiculously high number of cores (e.g. 32) due to various bottlenecks that are hard to remove. Also the simplicity of RISC cores vs X86 does not significantly affect chip cost since these days the vast majority of the space on a chip is taken up by on-chip caches (L1, L2, L3). The space taken up by instruction decoding circuits is really, really negligible next to that.