497767-B21 I HP 8GB DDR2 SDRAM DIMM 2x4GB 800 MHz DDR2-800/PC2-6400 ECC REGTechnical Information Memory Size 8 GB Memory Technology DDR2 SDRAM Number of Modules 2 x 4 GB Memory Speed 800 MHz Memory Standard DDR2 800 PC2 6400 Error Checking ECC Signal Processing Registered Physical Characteristics Number of Pins 240 pin Form Factor DIMM HP Part Numbers: 497767 B21, 501158 001 We ship all products according to manufacturer specifications. If the manufacturer does not include an option as standard with the product (power