Servers - Fully Buffered: 4GB 667Mhz PC2-5300F DDR2 240-Pin FBDIMM Fully Buffered ECC Server Memory Module - CPU Medics
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
16gb Ddr2 Ecc Fully Buffered Ram 8gb 667mhz Fb-dimm 4gb Pc2-5300f Dimm For Dell Poweredge 2950 Iii 2900 Iii 1955 1950 Iii Server - Rams - AliExpress
Server memory 8GB (2x4GB) DDR2 ECC FBD 8GB 667MHz FB DIMM 4GB 2Rx4 PC2 5300F Fully Buffered for IBM System x3450 x3500 x3550 RAM|RAMs| - AliExpress
32GB Kit (8x4GB) Fully Buffered DDR2 Server Ram/Memory. PC2-5300 667MHz DDR2 DIMM ECC (Fully Buffered) 240 Pin 1.8V at Amazon.com
IBM 8GB 2 x 4GB PC2-5300F DDR2 667 Fully Buffered ECC Server Memory Kit 46C7423 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,
8GB Kit 2 X 4GB DDR2 Server Memory Upgrade for Dell Precision Workstation 690 SDRAM ECC Fully Buffered FB DIMM PC2-5300 240 pin 667MHz RAM (PARTS-QUICK Brand) at Amazon.com
Komputerbay 8GB (2x 4GB) DDR2 PC2-5300F 667MHz CL5 ECC Fully Buffered FB-DIMM (240 PIN) 8 - Komputer Bay