Memory Bandwidth
The rate at which data can be transferred between processor cores and the memory subsystem, often becoming a limiting resource for data-intensive workloads.
Performance Context
Memory bandwidth is the rate at which data can move between processor cores and the memory subsystem. Vectorized computation, model inference, and large scans can become bandwidth-bound before arithmetic units are saturated; NUMA placement, cache hit rate, and access pattern determine effective throughput.
Measurement Boundary
Peak DDR bandwidth is a hardware ceiling, not an application guarantee. Channel population, locality, latency, prefetching, concurrency, and read/write mix determine how much of that ceiling a workload can use.