This benchmark measures the maximum achiveable memory copy speed. The code behind this benchmark method is written in Assembly and it is extremely optimized for every popular AMD and Intel processor core variants by utilizing the appropriate x86, MMX, 3DNow!, SSE, SSE2 or SSE4.1 instruction set extension. The benchmark copies a 8 MB sized, 1 MB aligned data buffer into another 8 MB sized, 1 MB aligned data buffer through the CPU. Memory is copied in forward direction, continuously without breaks.
In order to avoid concurrent threads competing over system memory bandwidth, Memory Copy benchmark utilizes only one processor core and one thread.