Axiom 4GB Low Power DDR2-667 ECC RDIMM Kit (2 x 2GB) for HP # 483401-B21 - 4GB (2 x 2GB) - 667MHz DDR2-667/PC2-5300 - ECC - DDR2 SDRAM - 240-pin DIMM

240-pin for faster, dependable performance and better access to data and information RDIMM form factor with 240-pin and 4 GB memory size for enhanced performance and speed to allow maximum usability 2 x 2GB modules for enhanced memory reliability and productivity 667 MHz of memory speed makes your computer perform like an athlete Registered signal processing allows high speed and accuracy to allow maximum reliability 4 GB memory smoothly executes complex apps and games 240-pin-pin DDR2 SDRAM interface synchronizes electrical and clock signals for an efficient data transfer rate Server device support for your ram module to allow enhanced performance and reliable memory solution Enables efficient and smooth execution of all your heavy-duty applications with maximum productivity