Memory Latency

This benchmark measures the typical delay when the CPU reads data from system memory. Memory latency time means the penalty measured from the issuing of the read command until the data arrives to the integer registers of the CPU. The code behind this benchmark method is written in Assembly, and uses 1 MB alignment, 1024-byte stride size. Memory is accessed in forward direction.

Memory Latency benchmark test uses only the basic x86 instructions and utilizes only one processor core and one thread.

Important note

On AMD K8 class (Athlon 64, Athlon 64 X2, Socket 754/939/AM2 Sempron, Opteron, Turion 64, Turion 64 X2) systems configuring the Command Rate setting to 1T slightly improves Memory Latency result.