4GB 2 X 2GB PC2-5300F 667MHz 240 pin DDR2 SDRAM ECC Fully Buffered FB DIMM Server Low Power Memory for HP Workstation XW8600 (PARTS-QUICK BRAND). Equivalent to HP Part Numbers: 397413-B21, 442823-B21,
RAM 2G DDR2 667MHz PC2 5300 ECC 2GB 2Rx8 PC2-6400E Unbuffered 4GB Memory for Dell PowerEdge 840 830 800 Server _ - AliExpress Mobile
2GB DDR2-667 (PC2-5300) ECC RAM Memory Upgrade for The Compaq HP ProLiant ML Series ML115T01 (437289-001) (Genuine A-Tech Brand) at Amazon.com