This benchmark measures the maximum achiveable memory write bandwidth. 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 or SSE2 instruction set extension. The benchmark writes a 16 MB sized, 1 MB aligned data buffer from the CPU into the system memory. Memory is written in forward direction, continuously without breaks.
In order to avoid concurrent threads competing over system memory bandwidth, Memory Write benchmark utilizes only one processor core and one thread.
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 significantly improves Memory Write bandwidth and CPU PhotoWorxx scores.