The Twin 2X4096-6400C5DHX is a 4096 M Byte matched pair of DDR2 SDRAM DIMMs built using Corsair's latest high performance heat sink with Dual-Path Heat Xchange (DHX) technology. This part delivers outstanding performance in the latest generation of dual-channel DDR2-based motherboards. It has been tested extensively in multiple DDR2 motherboards to ensure compatibility & performance at its rated speed. This memory has been verified to operate at 800 M Hz at the low latencies of 5-5-5-18.