Corsair Dominator Quad2X4096 4X1GB PC2-8500 1066MHz DDR2 (QUAD2X4096-8500C5DFG) Four matched CM2X1024-8500C5D modules Includes Airflow Fan for maximum thermal transfer Enhanced performance profiles allow automatic overclocking to aggressive performance testing 100% tested at 1066MHz in high performance DDR2 motherboards Lifetime Warranty