Editorial Review Features:8GB DDR3 (Double Data Rate Three) RAMECC RegisteredPC3-10600R 1333 MHzVoltage: 1.5VCL92Rx4240-pinHeat spreader attached Package Includes:Hynix 8GB DDR3 RAM 1333MHz PC3-10600R ECC Registered 240-Pin DIMM Notes:Model: HMT31GR7AFR4C-H9ECC RAM is intended for use in mission critical work systems, such as servers and workstations. This ECC RAM is not intended for use in most desktop and notebook motherboards, please consult your motherboard's user manual for compatibilityRequirements: Motherboard that supports 8GB DDR3 PC3-10600 ECC Registered 240-pin DIMM