HP 8GB DDR2 SDRAM Memory Module 8 GB (2 x 4 GB) - 667 MHz DDR2-667/PC2-5300 - DDR2 SDRAM - 240-pin DIMM
Memory - 8 GB 2 x 4 GB - FB-DIMM low profile - DDR II - 667 MHz / PC2-5300 - fully bufferedPrimary InformationRAM Type :  DRAM Features :  Fully buffered RAM Form Factor :  FB-DIMM RAM Technology :  DDR2 SDRAM RAM / Memory Speed :  667 MHz RAM / Storage Capacity :  8 GB RAM Upgrade Type :  System specific Slot s Required :  2 x memory - FB-DIMM UNSPSC CodeUNSPSC Code :  32101602Â