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
Amazon.com: parts-quick 4GB 2 X 2GB PC2-5300 667MHz 240 pin DDR2 SDRAM ECC DIMM Desktop Server Memory for Dell PowerEdge 840 Brand : Electronics