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	201.34%
DDR2-800 Dual Channel Max. Theoretical	12,800	126.15%
DDR2-667 Dual Channel Max. Theoretical	10,672	88.55%
DDR2-1066 Single Channel Max. Theoretical	8,528	50.67%
DDR2-533 Dual Channel Max. Theoretical	8,192	44.73%
DDR2-800 Single Channel Max. Theoretical	6,400	13.07%
Corsair CM2X1024-8500C5 (DDR2-1066)	5,660
DDR2-667 Single Channel Max. Theoretical	5,336	6.07%
DDR2-800 Simulation	5,281	7.18%
Corsair CM2X1024-6400C3 (DDR2-800)	5,280	7.20%
DDR2-667 Simulation	5,137	10.18%
Corsair CM2X512A-5400UL (DDR2-667)	5,106	10.85%
Corsair CM2X512-4200 (DDR2-533)	4,887	15.82%
DDR2-533 Simulation	4,886	15.84%
DDR2-533 Single Channel Max. Theoretical	4,264	32.74%

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