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,
CMS 1GB (1X1GB) DDR2 5300 667MHZ NON ECC DIMM Memory Ram Compatible with HP/Compaq Business Desktop Dc5700 Sff/Microtower - A103 - Walmart.com