https://en.wikipedia.org/wiki/Non-uniform_memory_access https://en.wikipedia.org/wiki/Non-uniform_memory_access In modern multicore CPUs I think each core has

https://en.wikipedia.org/wiki/Non-uniform_memory_access https://en.wikipedia.org/wiki/Non-uniform_memory_access In modern multicore CPUs I think each core has its own cache and there is shared cache between all cores, and then you have the NUMA DRAM.