This paper explores the memory subsystem design through gem5 simulations of a non-uniform memory access (NUMA) architecture with ARM cores equipped with vector engines. And connected to a Network-on-Chip (NoC) following the Coherent Hub Interface (CHI) protocol. The study quantifies the benefits of vectorization, prefetching, and multichannel NoC configurations using a benchmark for generating memory patterns and indexed accesses. The outcomes provide insights into improving bus utilization and bandwidth and reducing stalls in the system. The paper proposes hardware/software (HW/SW) advancements to reach and use the HBM device with a higher percentage than 80% at the memory controllers in the simulated manycore system.