Corsair has recently produced a whitepaper detailing some of the performance gains that can be realized with memory configurations of 8GB and larger. You can find the results of this study here. The study demonstrated that the higher density memory took excellent advantage of the improved memory handling in Windows 7, and resulted in substantial performance gains in system startup, shutdown, context switching, and game loading.
The 8GB and 12GB module kits feature Corsair's DHX+ cooling technology, and sport new American Racing Blue fins and highlights. The dual channel configuration, part number CMD8GX3M4A1600C8, consists of four matched 2GB modules, optimized for P55 motherboards. The triple channel configuration, part number CMD12GX3M6A1600C8, consists of six matched 2GB modules, and is optimized for X58 motherboards. Both sets of modules have XMP profiles set at 1600MHz, with CAS latency settings of 8-8-8-24. An Airflow fan with matching blue highlights is included with both the dual and triple channel configurations.