Amazon.com: OWC 4GB (2 x 2GB) PC5300 DDR2 667MHz SO-DIMMs Memory Compatible with MacBook, MacBook Pro, iMac, Mac Mini Core 2 Duo Models (OWC5300DDR2S4GP) : Everything Else
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,
Amazon.com: IBM 8GB (2 X 4GB) DDR2 SDRAM Memory Module ECC Registered : Electronics
4GB 2 X 2GB PC2-5300 667MHz 240 pin DDR2 SDRAM ECC DIMM Desktop Server Memory for Dell PowerEdge T105 (PARTS-QUICK Brand) at Amazon.com
Kingston 4 GB (2x2GB Kit) Fully Buffered ECC DDR2 SDRAM Memory Module 4 GB 333MHz DDR2667/PC25300 DDR2 SDRAM 240pin DIMM KTM5780/4G Server Memory Only at Amazon.com
Hynix 4GB 4 x 1GB PC2-5300U DDR2 667 Non-ECC Unbuff Memory Kit HYMP512U64CP8-Y5 at Amazon.com
4GB [2x2GB] DDR2-667 (PC2-5300) RAM Memory Upgrade Kit for The Apple iMac 7,1 (20-inch, 2.0GHz, MA876LL/A) Intel Core 2 Duo (Genuine A-Tech Brand) at Amazon.com