The Dominator Series Twin2X4096-8500C5D is 4096MBytes of DDR2 SDRAM DIMMs built using Corsair’s high performance heat sink with Dual-path Heat Xchange (DHX) technology This memory has been verified to operate at 1066MHz at latencies of 5-5-5-15 at 2.1VDIMM. The Twin2X4096-8500C5D comes with Enhanced Performance Profiles (EPP), the open standard for performance module SPD’s jointly developed by Corsair and NVIDIA. EPP SPD’s on Corsair modules allow users to automatically configure EPP enabled motherboards with aggressive memory performance settings, for maximum memory and system performance.