8GB (2 x 4GB) - 667MHz DDR2-667/PC2-5300 - DDR2 SDRAM - 240-pin at Amazon .com
Corsair VS4GSDS800D2 Corsair Value Select 4GB DDR2 SDRAM Memory Module at Amazon.com
8GB Kit 2 X 4GB DDR2 Server Memory Upgrade for Dell PowerEdge 2950 III SDRAM ECC Fully Buffered FB DIMM PC2-5300 240 pin 667MHz RAM (PARTS-QUICK Brand) at Amazon.com
Kingston ValueRAM 4GB 667MHz DDR2 Non-ECC CL5 DIMM (Kit of 2) Desktop Memory at Amazon.com
Amazon.com: Komputerbay MACMEMORY Apple 4GB (Single 4GB Stick) PC2-5300 667MHz DDR2 SODIMM iMac and MacBook Memory : Everything Else
Amazon.com: pc2-5300 ddr2 667 mhz type ram
4GB 2x 2GB PC2-5300 DDR2 667 MHz Memory RAM for IBM X SERIES X3200 4362 | eBay
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,