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
A-Tech 16GB KIT (2 x 8GB) for Tyan TN Server Series TN68B4989 (B4989T68W8HR) | DDR2 667MHz PC2-5300R ECC-RDIMM ECC Registered DIMM Server RAM Memory at Amazon.com
Kingston KVR667D2Q8F5/4G PC2-5300 4GB DDR2 RAM 667MHz FB-DIMM 240-Pin Server RAM ECC Memory at Amazon.com