Yes, infinity fabric has limitations. Threadripper suffers in memory intensive workloads because only half of the CCXs have a dedicated memory controller thus s

Yes, infinity fabric has limitations. Threadripper suffers in memory intensive workloads because only half of the CCXs have a dedicated memory controller thus some cores need to talk to another CCX to access memory. On EPYC each CCX has its own memory controller so it's less of an issue.