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
URAM DDR2 SDRAM 2GB 667MHz PC2 5300S PC2 5300 1.8V 200 pin Non-ECC SODIMM Samsung Chip Laptop Memory RAM for Notebooks with Intel and AMD Systems, and for iMac,MacBook,MacBook Pro and Mac
Kingston ValueRAM 2GB DDR2 667MHz FBDIMM Desktop Server Memory at Amazon.com