CORSAIR XMS2 4GB ( 2 X 2GB ) PC2-8500 1066MHz 240-pin DDR2 CL5 Dual Channel Desktop Memory Kit,CORSAIR VALUE SELECT,TWIN2X4096-8500C5" /> Enhanced Performance Profiles ( EPP ) allows automatic overclocking to aggressive performance settings NVIDIA SLI-Ready system memory certification ensures compatibility and system stability with the rest of the SLI ecosystem components Online 24/7 Customer Support available at www.asktheramguy.com for your convenience and questions 100% tested at 1066MHz in NVIDIA-based nForce 780i Motherboard Lifetime Warranty!