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
Amazon.com: OWC 16GB (4 x 4GB) PC6400 DDR2 ECC 800MHz FB-DIMMs Memory Compatible with Mac Pro Quad Core / 8 Core (OWC64FB4MPK16GB) : Everything Else
FB-DIMM Memory Module Manufacturers and Description, Advanced Memory Buffer, AMB Interface
Infineon Boosts DDR2 FB-DIMM Deployment: Designs and Manufactures All Key Components for Industry's Next-Generation Server Memory Modules; Delivers AMB-Chip to FB-DIMM Manufacturers - Infineon Technologies
Infineon Boosts DDR2 FB-DIMM Deployment: Designs and Manufactures All Key Components for Industry's Next-Generation Server Memory Modules; Delivers AMB-Chip to FB-DIMM Manufacturers - Infineon Technologies