Patriot Dual Channel PC2-6400 memory kit is designed to operate at the high frequency of 800MHz while running at a low timing of 4-4-4-12 (tCAS-tRCD-tRP-tRAS). Compatible with both nVidia nForce4 SLI and Intel 9xx chipset, our PC2-6400 demonstrates its versatility at a high frequency and low latency making our it the memory of choice for all extremists and enthusiasts.