8GB Kit 2 X 4GB DDR2 Server Memory Upgrade for Dell Precision Workstation 490 SDRAM ECC Fully Buffered FB DIMM PC2-5300 240 pin 667MHz RAM (PARTS-QUICK Brand) at Amazon.com
CMS 4GB (2X2GB) DDR2 5300 667MHZ ECC Non Registered DIMM Memory Ram Upgrade Compatible with Dell® Poweredge T105 Ecc Unbuff for Server Only - B64 at Amazon.com
Memory Master 2 GB (2 x 1 GB) DDR2 667MHz PC2-5300 Notebook SODIMM Memory Modules (MMN2048KD2-667) at Amazon.com