IBM 8GB 2 x 4GB PC2-5300F DDR2 667 Fully Buffered ECC Server Memory Kit 46C7423 at Amazon.com
16GB 4x4G PC2-5300F DDR2-667 ECC MT36HTF51272FY-667E1D4 SERVER MEMORY at Amazon.com
HP 4GB PC2-5300F DDR2 ECC FB DIMM Memory 398708-061 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,
Kingston KVR667D2Q8F5/4G PC2-5300 4GB DDR2 RAM 667MHz FB-DIMM 240-Pin Server RAM ECC Memory at Amazon.com
EBE82FF4A1RQ-6E-E) DIMM, 8GB PC2-5300F FBDIMM at Amazon.com
Komputerbay 8GB (4X 2GB) DDR2 PC2-5300F 667MHz CL5 ECC Fully Buffered 2Rx4 FB-DIMM (240 PIN) w/Heatspreaders (This is Used mainly in Servers - Will not Work with Non ECC UnBuffered) at Amazon.com
64GB (8x8GB) DDR2 PC2-5300F 667 MHz Server Memory RAM for HP ProLiant DL380 G5 Generation 5 Rackmount Upgrade Kit Fully Buffered FB DIMMs at Amazon.com