They are single socket but the arrangement of their CCX means that we have NUMA even on a single socket system. AnandTech has some info: https://www.anandtech.c

They are single socket but the arrangement of their CCX means that we have NUMA even on a single socket system. AnandTech has some info: https://www.anandtech.com/show/11697/the-amd-ryzen-threadripper-1950x-and-1920x-review/3 https://www.anandtech.com/show/11697/the-amd-ryzen-threadrip... This results in a gaming mode which disables some cores to achieve higher fps in not NUMA-aware games. Afair, this is even worse with the new 32 core CPUs.