We measured memory bandwidth with Sandra Lite 2007. Memory bandwidth, also known as transfer rate, is measured in MB/s. The methodology we used you can check on the previous page.

The results you can see on the chart and table below. On the table we included the maximum theoretical transfer rate for all DDR2 standards, both single channel and dual channel. As you can see, even though the reviewed memory kit achieved the best transfer rate among the selected memory modules, it is far from the maximum theoretical transfer rate. This is normal to occur with Intel CPUs, where the memory controller isn’t embedded in the CPU but located on the motherboard north bridge chip.

Memory Module	Transfer Rate (MB/s)	Difference
DDR2-1066 Dual Channel Max. Theoretical	17,056	205.94%
DDR2-800 Dual Channel Max. Theoretical	12,800	129.60%
DDR2-667 Dual Channel Max. Theoretical	10,672	91.43%
DDR2-1066 Single Channel Max. Theoretical	8,528	52.97%
DDR2-533 Dual Channel Max. Theoretical	8,192	46.94%
DDR2-800 Single Channel Max. Theoretical	6,400	14.80%
Corsair CM2X512-8500C5 (DDR2-1066)	5,605	0.54%
Patriot PDC21G8500ELK (DDR2-1066)	5,575
DDR2-667 Single Channel Max. Theoretical	5,336	4.48%
Corsair CM2X1024-6400C3 (DDR2-800)	5,280	5.59%
DDR2-800 Simulation (5-5-5-16)	5,155	8.15%
Corsair CM2X512A-5400UL (DDR2-667)	5,106	9.19%
DDR2-667 Simulation (5-5-5-13)	5,017	11.12%
Corsair CM2X512-4200 (DDR2-533)	4,887	14.08%
DDR2-533 Simulation (4-4-4-11)	4,787	16.46%
DDR2-533 Single Channel Max. Theoretical	4,264	30.75%

You should keep in mind that a higher memory transfer rate does not necessarily translate into a higher system overall performance.