Advanced Micro Devices (AMD) has introduced a microcode patch that disables the loop buffer functionality in its Zen 4 processor lineup, including Ryzen 7000 series and Epyc CPUs.
Each Zen 4 CCD has either eight or 16 cores ... perhaps in an orchestration or hypervisor role. This “custom” AMD CPU might not be so custom either, as it sounds quite a bit like last year ...