8GB [2x4GB] Fully-Buffered FBDIMM Memory RAM Upgrade for the Dell PowerEdge 1950, 2900, 2950 Systems (DDR2-667, PC2-5300F, FBDIMM) at Amazon.com
16GB KIT (4 x 4GB) for HP-Compaq Workstation Series xw6400 xw6600 xw8400 xw8600. DIMM DDR2 ECC Fully Buffered PC2-5300F 667MHz Server Ram Memory. Genuine A-Tech Brand. at Amazon.com
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,
HYNIX HYMP125F72CP8D5-Y5 PC2-5300F DDR2 667 2RX8 2GB FBDIMM (FOR SERVER ONLY) at Amazon.com