The CMX512-3200C2PT is a 512MB, dual bank, ultra-performance DDR SDRAM DIMM screened specifically for gaming applications. This memory has been selected by Corsair's Compatibility Lab for its outstanding performance in motherboards commonly used in gaming rigs. This memory has been verifies to operate at 200MHz (2-3-3, IT command rate_ and 166MHz (2-2-2, IT command rate). Generally, one 512MB module will outperform two 256MB modules in a given motherboard. Side-by-side comparison indicates that this is one of the fastest modules available in the world.